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xas_tdp_integrals.F
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1!--------------------------------------------------------------------------------------------------!
2! CP2K: A general program to perform molecular dynamics simulations !
3! Copyright 2000-2025 CP2K developers group <https://cp2k.org> !
4! !
5! SPDX-License-Identifier: GPL-2.0-or-later !
6!--------------------------------------------------------------------------------------------------!
7
8! **************************************************************************************************
9!> \brief 3-center integrals machinery for the XAS_TDP method
10!> \author A. Bussy (03.2020)
11! **************************************************************************************************
12
13MODULE xas_tdp_integrals
14 USE omp_lib, ONLY: omp_get_max_threads,&
15 omp_get_num_threads,&
16 omp_get_thread_num
17 USE ai_contraction_sphi, ONLY: ab_contract,&
18 abc_contract_xsmm
19 USE atomic_kind_types, ONLY: atomic_kind_type
20 USE basis_set_types, ONLY: get_gto_basis_set,&
21 gto_basis_set_p_type,&
22 gto_basis_set_type
23 USE cell_types, ONLY: cell_type
24 USE constants_operator, ONLY: operator_coulomb
25 USE cp_array_utils, ONLY: cp_1d_i_p_type,&
26 cp_2d_r_p_type
27 USE cp_blacs_env, ONLY: cp_blacs_env_type
28 USE cp_dbcsr_api, ONLY: dbcsr_distribution_get,&
29 dbcsr_distribution_release,&
30 dbcsr_distribution_type
31 USE cp_dbcsr_operations, ONLY: cp_dbcsr_dist2d_to_dist
32 USE cp_eri_mme_interface, ONLY: cp_eri_mme_param,&
33 cp_eri_mme_set_params
34 USE cp_files, ONLY: close_file,&
35 open_file
36 USE dbt_api, ONLY: &
37 dbt_create, dbt_distribution_destroy, dbt_distribution_new, dbt_distribution_type, &
38 dbt_finalize, dbt_pgrid_create, dbt_pgrid_destroy, dbt_pgrid_type, dbt_put_block, &
39 dbt_reserve_blocks, dbt_type
40 USE distribution_1d_types, ONLY: distribution_1d_type
41 USE distribution_2d_types, ONLY: distribution_2d_create,&
42 distribution_2d_type
43 USE eri_mme_integrate, ONLY: eri_mme_2c_integrate
44 USE eri_mme_types, ONLY: eri_mme_init,&
45 eri_mme_release
46 USE gamma, ONLY: init_md_ftable
47 USE generic_os_integrals, ONLY: int_operators_r12_ab_os
48 USE input_constants, ONLY: do_potential_coulomb,&
49 do_potential_id,&
50 do_potential_short,&
51 do_potential_truncated
52 USE input_section_types, ONLY: section_vals_val_get
53 USE kinds, ONLY: dp
54 USE libint_2c_3c, ONLY: cutoff_screen_factor,&
55 eri_2center,&
56 eri_3center,&
57 libint_potential_type
58 USE libint_wrapper, ONLY: cp_libint_cleanup_2eri,&
59 cp_libint_cleanup_3eri,&
60 cp_libint_init_2eri,&
61 cp_libint_init_3eri,&
62 cp_libint_set_contrdepth,&
63 cp_libint_t
64 USE mathlib, ONLY: invmat_symm
65 USE message_passing, ONLY: mp_comm_type,&
66 mp_para_env_type
67 USE molecule_types, ONLY: molecule_type
68 USE orbital_pointers, ONLY: ncoset
69 USE particle_methods, ONLY: get_particle_set
70 USE particle_types, ONLY: particle_type
71 USE qs_environment_types, ONLY: get_qs_env,&
72 qs_environment_type
73 USE qs_integral_utils, ONLY: basis_set_list_setup
74 USE qs_kind_types, ONLY: get_qs_kind,&
75 qs_kind_type
76 USE qs_neighbor_list_types, ONLY: &
77 get_iterator_info, get_neighbor_list_set_p, neighbor_list_iterate, &
78 neighbor_list_iterator_create, neighbor_list_iterator_p_type, &
79 neighbor_list_iterator_release, neighbor_list_set_p_type, nl_set_sub_iterator, &
80 nl_sub_iterate, release_neighbor_list_sets
81 USE qs_neighbor_lists, ONLY: atom2d_build,&
82 atom2d_cleanup,&
83 build_neighbor_lists,&
84 local_atoms_type,&
85 pair_radius_setup
86 USE qs_o3c_types, ONLY: get_o3c_iterator_info,&
87 init_o3c_container,&
88 o3c_container_type,&
89 o3c_iterate,&
90 o3c_iterator_create,&
91 o3c_iterator_release,&
92 o3c_iterator_type,&
93 release_o3c_container
94 USE t_c_g0, ONLY: get_lmax_init,&
95 init
96 USE xas_tdp_types, ONLY: xas_tdp_control_type,&
97 xas_tdp_env_type
98#include "./base/base_uses.f90"
99
100 IMPLICIT NONE
101 PRIVATE
102
103 CHARACTER(len=*), PARAMETER, PRIVATE :: moduleN = 'xas_tdp_integrals'
104
105 PUBLIC :: create_pqx_tensor, fill_pqx_tensor, compute_ri_3c_coulomb, compute_ri_3c_exchange, &
106 build_xas_tdp_3c_nl, build_xas_tdp_ovlp_nl, get_opt_3c_dist2d, &
107 compute_ri_coulomb2_int, compute_ri_exchange2_int
108
109CONTAINS
110
111! **************************************************************************************************
112!> \brief Prepares a tensor to hold 3-center integrals (pq|X), where p,q are distributed according
113!> to the given 2d dbcsr distribution of the given . The third dimension of the tensor is
114!> iteslf not distributed (i.e. the t_pgrid's third dimension has size 1). The blocks are
115!> reserved according to the neighbor lists
116!> \param pq_X the tensor to store the integrals
117!> \param ab_nl the 1st and 2nd center neighbor list
118!> \param ac_nl the 1st and 3rd center neighbor list
119!> \param matrix_dist ...
120!> \param blk_size_1 the block size in the first dimension
121!> \param blk_size_2 the block size in the second dimension
122!> \param blk_size_3 the block size in the third dimension
123!> \param only_bc_same_center only keep block if, for the corresponding integral (ab|c), b and c
124!> share the same center, i.e. r_bc = 0.0
125! **************************************************************************************************
126 SUBROUTINE create_pqx_tensor(pq_X, ab_nl, ac_nl, matrix_dist, blk_size_1, blk_size_2, &
127 blk_size_3, only_bc_same_center)
128
129 TYPE(dbt_type), INTENT(OUT) :: pq_x
130 TYPE(neighbor_list_set_p_type), DIMENSION(:), &
131 POINTER :: ab_nl, ac_nl
132 TYPE(dbcsr_distribution_type), INTENT(IN) :: matrix_dist
133 INTEGER, DIMENSION(:), INTENT(IN) :: blk_size_1, blk_size_2, blk_size_3
134 LOGICAL, INTENT(IN), OPTIONAL :: only_bc_same_center
135
136 CHARACTER(len=*), PARAMETER :: routinen = 'create_pqX_tensor'
137
138 INTEGER :: a, b, group_handle, handle, i, iatom, &
139 ikind, jatom, katom, kkind, nblk, &
140 nblk_3, nblk_per_thread, nkind
141 INTEGER, ALLOCATABLE, DIMENSION(:) :: idx1, idx2, idx3
142 INTEGER, DIMENSION(3) :: pdims
143 INTEGER, DIMENSION(:), POINTER :: col_dist, row_dist
144 INTEGER, DIMENSION(:, :), POINTER :: mat_pgrid
145 LOGICAL :: my_sort_bc, symmetric
146 REAL(dp), DIMENSION(3) :: rab, rac, rbc
147 TYPE(dbt_distribution_type) :: t_dist
148 TYPE(dbt_pgrid_type) :: t_pgrid
149 TYPE(mp_comm_type) :: group
150 TYPE(neighbor_list_iterator_p_type), &
151 DIMENSION(:), POINTER :: ab_iter, ac_iter
152
153 NULLIFY (ab_iter, ac_iter, col_dist, row_dist, mat_pgrid)
154
155 CALL timeset(routinen, handle)
156
157 my_sort_bc = .false.
158 IF (PRESENT(only_bc_same_center)) my_sort_bc = only_bc_same_center
159
160 CALL get_neighbor_list_set_p(ab_nl, symmetric=symmetric)
161 cpassert(symmetric)
162
163 !get 2D distribution info from matrix_dist
164 CALL dbcsr_distribution_get(matrix_dist, pgrid=mat_pgrid, group=group_handle, &
165 row_dist=row_dist, col_dist=col_dist)
166 CALL group%set_handle(group_handle)
167
168 !create the corresponding tensor proc grid and dist
169 pdims(1) = SIZE(mat_pgrid, 1); pdims(2) = SIZE(mat_pgrid, 2); pdims(3) = 1
170 CALL dbt_pgrid_create(group, pdims, t_pgrid)
171
172 nblk_3 = SIZE(blk_size_3)
173 CALL dbt_distribution_new(t_dist, t_pgrid, nd_dist_1=row_dist, nd_dist_2=col_dist, &
174 nd_dist_3=[(0, i=1, nblk_3)])
175
176 !create the tensor itself.
177 CALL dbt_create(pq_x, name="(pq|X)", dist=t_dist, map1_2d=[1, 2], map2_2d=[3], &
178 blk_size_1=blk_size_1, blk_size_2=blk_size_2, blk_size_3=blk_size_3)
179
180 !count the blocks to reserve !note: dbcsr takes care of only keeping unique indices
181 CALL neighbor_list_iterator_create(ab_iter, ab_nl)
182 CALL neighbor_list_iterator_create(ac_iter, ac_nl, search=.true.)
183 nblk = 0
184 DO WHILE (neighbor_list_iterate(ab_iter) == 0)
185 CALL get_iterator_info(ab_iter, ikind=ikind, iatom=iatom, nkind=nkind, r=rab)
186
187 DO kkind = 1, nkind
188 CALL nl_set_sub_iterator(ac_iter, ikind, kkind, iatom)
189
190 DO WHILE (nl_sub_iterate(ac_iter) == 0)
191
192 IF (my_sort_bc) THEN
193 !we check for rbc or rac because of symmetry in ab_nl
194 CALL get_iterator_info(ac_iter, r=rac)
195 rbc(:) = rac(:) - rab(:)
196 IF (.NOT. (all(abs(rbc) .LE. 1.0e-8_dp) .OR. all(abs(rac) .LE. 1.0e-8_dp))) cycle
197
198 END IF
199
200 nblk = nblk + 1
201 END DO !ac_iter
202 END DO !kkind
203 END DO !ab_iter
204 CALL neighbor_list_iterator_release(ab_iter)
205 CALL neighbor_list_iterator_release(ac_iter)
206
207 ALLOCATE (idx1(nblk), idx2(nblk), idx3(nblk))
208
209 !actually reserve the blocks
210 CALL neighbor_list_iterator_create(ab_iter, ab_nl)
211 CALL neighbor_list_iterator_create(ac_iter, ac_nl, search=.true.)
212 nblk = 0
213 DO WHILE (neighbor_list_iterate(ab_iter) == 0)
214 CALL get_iterator_info(ab_iter, ikind=ikind, iatom=iatom, jatom=jatom, nkind=nkind, r=rab)
215
216 DO kkind = 1, nkind
217 CALL nl_set_sub_iterator(ac_iter, ikind, kkind, iatom)
218
219 DO WHILE (nl_sub_iterate(ac_iter) == 0)
220 CALL get_iterator_info(ac_iter, jatom=katom, r=rac)
221
222 IF (my_sort_bc) THEN
223 !we check for rbc or rac because of symmetry in ab_nl
224 CALL get_iterator_info(ac_iter, r=rac)
225 rbc(:) = rac(:) - rab(:)
226 IF (.NOT. (all(abs(rbc) .LE. 1.0e-8_dp) .OR. all(abs(rac) .LE. 1.0e-8_dp))) cycle
227
228 END IF
229
230 nblk = nblk + 1
231
232 idx1(nblk) = iatom
233 idx2(nblk) = jatom
234 idx3(nblk) = katom
235
236 END DO !ac_iter
237 END DO !kkind
238 END DO !ab_iter
239 CALL neighbor_list_iterator_release(ab_iter)
240 CALL neighbor_list_iterator_release(ac_iter)
241
242!TODO: Parallelize creation of block list.
243!$OMP PARALLEL DEFAULT(NONE) SHARED(pq_X, nblk, idx1, idx2, idx3) PRIVATE(nblk_per_thread,A,b)
244 nblk_per_thread = nblk/omp_get_num_threads() + 1
245 a = omp_get_thread_num()*nblk_per_thread + 1
246 b = min(a + nblk_per_thread, nblk)
247 CALL dbt_reserve_blocks(pq_x, idx1(a:b), idx2(a:b), idx3(a:b))
248!$OMP END PARALLEL
249 CALL dbt_finalize(pq_x)
250
251 !clean-up
252 CALL dbt_distribution_destroy(t_dist)
253 CALL dbt_pgrid_destroy(t_pgrid)
254
255 CALL timestop(handle)
256
257 END SUBROUTINE create_pqx_tensor
258
259! **************************************************************************************************
260!> \brief Fills the given 3 dimensional (pq|X) tensor with integrals
261!> \param pq_X the tensor to fill
262!> \param ab_nl the neighbor list for the first 2 centers
263!> \param ac_nl the neighbor list for the first and third centers
264!> \param basis_set_list_a basis sets for first center
265!> \param basis_set_list_b basis sets for second center
266!> \param basis_set_list_c basis sets for third center
267!> \param potential_parameter the operator for the integrals
268!> \param qs_env ...
269!> \param only_bc_same_center same as in create_pqX_tensor
270!> \param eps_screen threshold for possible screening
271!> \note The following indices are happily mixed within this routine: First center i,a,p
272!> Second center: j,b,q Third center: k,c,X
273! **************************************************************************************************
274 SUBROUTINE fill_pqx_tensor(pq_X, ab_nl, ac_nl, basis_set_list_a, basis_set_list_b, &
275 basis_set_list_c, potential_parameter, qs_env, &
276 only_bc_same_center, eps_screen)
277
278 TYPE(dbt_type) :: pq_x
279 TYPE(neighbor_list_set_p_type), DIMENSION(:), &
280 POINTER :: ab_nl, ac_nl
281 TYPE(gto_basis_set_p_type), DIMENSION(:), POINTER :: basis_set_list_a, basis_set_list_b, &
282 basis_set_list_c
283 TYPE(libint_potential_type) :: potential_parameter
284 TYPE(qs_environment_type), POINTER :: qs_env
285 LOGICAL, INTENT(IN), OPTIONAL :: only_bc_same_center
286 REAL(dp), INTENT(IN), OPTIONAL :: eps_screen
287
288 CHARACTER(len=*), PARAMETER :: routinen = 'fill_pqX_tensor'
289
290 INTEGER :: egfa, egfb, egfc, handle, i, iatom, ibasis, ikind, ilist, imax, iset, jatom, &
291 jkind, jset, katom, kkind, kset, m_max, max_nset, maxli, maxlj, maxlk, mepos, nbasis, &
292 ncoa, ncob, ncoc, ni, nj, nk, nseta, nsetb, nsetc, nthread, sgfa, sgfb, sgfc, unit_id
293 INTEGER, DIMENSION(:), POINTER :: la_max, la_min, lb_max, lb_min, lc_max, &
294 lc_min, npgfa, npgfb, npgfc, nsgfa, &
295 nsgfb, nsgfc
296 INTEGER, DIMENSION(:, :), POINTER :: first_sgfa, first_sgfb, first_sgfc
297 LOGICAL :: do_screen, my_sort_bc
298 REAL(dp) :: dij, dik, djk, my_eps_screen, ri(3), &
299 rij(3), rik(3), rj(3), rjk(3), rk(3), &
300 sabc_ext, screen_radius
301 REAL(dp), ALLOCATABLE, DIMENSION(:) :: ccp_buffer, cpp_buffer
302 REAL(dp), ALLOCATABLE, DIMENSION(:, :) :: max_contr, max_contra, max_contrb, &
303 max_contrc
304 REAL(dp), ALLOCATABLE, DIMENSION(:, :, :) :: iabc, sabc, work
305 REAL(dp), DIMENSION(:), POINTER :: set_radius_a, set_radius_b, set_radius_c
306 REAL(dp), DIMENSION(:, :), POINTER :: rpgf_a, rpgf_b, rpgf_c, zeta, zetb, zetc
307 TYPE(cp_2d_r_p_type), DIMENSION(:, :), POINTER :: spb, spc, tspa
308 TYPE(cp_libint_t) :: lib
309 TYPE(gto_basis_set_p_type), DIMENSION(:), POINTER :: basis_set_list
310 TYPE(gto_basis_set_type), POINTER :: basis_set, basis_set_a, basis_set_b, &
311 basis_set_c
312 TYPE(mp_para_env_type), POINTER :: para_env
313 TYPE(o3c_container_type), POINTER :: o3c
314 TYPE(o3c_iterator_type) :: o3c_iterator
315
316 NULLIFY (basis_set, basis_set_list, para_env, la_max, la_min)
317 NULLIFY (lb_max, lb_min, lc_max, lc_min, npgfa, npgfb, npgfc, nsgfa, nsgfb, nsgfc)
318 NULLIFY (first_sgfa, first_sgfb, first_sgfc, set_radius_a, set_radius_b, set_radius_c)
319 NULLIFY (rpgf_a, rpgf_b, rpgf_c, zeta, zetb, zetc)
320 NULLIFY (basis_set_a, basis_set_b, basis_set_c, tspa, spb, spc)
321
322 CALL timeset(routinen, handle)
323
324 !Need the max l for each basis for libint (and overall max #of sets for screening)
325 nbasis = SIZE(basis_set_list_a)
326 max_nset = 0
327 maxli = 0
328 DO ibasis = 1, nbasis
329 CALL get_gto_basis_set(gto_basis_set=basis_set_list_a(ibasis)%gto_basis_set, &
330 maxl=imax, nset=iset, nsgf_set=nsgfa)
331 maxli = max(maxli, imax)
332 max_nset = max(max_nset, iset)
333 END DO
334 maxlj = 0
335 DO ibasis = 1, nbasis
336 CALL get_gto_basis_set(gto_basis_set=basis_set_list_b(ibasis)%gto_basis_set, &
337 maxl=imax, nset=iset, nsgf_set=nsgfb, npgf=npgfb)
338 maxlj = max(maxlj, imax)
339 max_nset = max(max_nset, iset)
340 END DO
341 maxlk = 0
342 DO ibasis = 1, nbasis
343 CALL get_gto_basis_set(gto_basis_set=basis_set_list_c(ibasis)%gto_basis_set, &
344 maxl=imax, nset=iset, npgf=npgfc)
345 maxlk = max(maxlk, imax)
346 max_nset = max(max_nset, iset)
347 END DO
348 m_max = maxli + maxlj + maxlk
349
350 !Screening
351 do_screen = .false.
352 IF (PRESENT(eps_screen)) THEN
353 do_screen = .true.
354 my_eps_screen = eps_screen
355 END IF
356 screen_radius = 0.0_dp
357 IF (potential_parameter%potential_type == do_potential_truncated .OR. &
358 potential_parameter%potential_type == do_potential_short) THEN
359
360 screen_radius = potential_parameter%cutoff_radius*cutoff_screen_factor
361 ELSE IF (potential_parameter%potential_type == do_potential_coulomb) THEN
362
363 screen_radius = 1000000.0_dp
364 END IF
365
366 !get maximum contraction values for abc_contract screening
367 IF (do_screen) THEN
368
369 !Allocate max_contraction arrays such that we have a specific value for each set/kind
370 ALLOCATE (max_contr(max_nset, nbasis), max_contra(max_nset, nbasis), &
371 max_contrb(max_nset, nbasis), max_contrc(max_nset, nbasis))
372
373 !Not the most elegent, but better than copying 3 times the same
374 DO ilist = 1, 3
375
376 IF (ilist == 1) basis_set_list => basis_set_list_a
377 IF (ilist == 2) basis_set_list => basis_set_list_b
378 IF (ilist == 3) basis_set_list => basis_set_list_c
379
380 max_contr = 0.0_dp
381
382 DO ibasis = 1, nbasis
383 basis_set => basis_set_list(ibasis)%gto_basis_set
384
385 DO iset = 1, basis_set%nset
386
387 ncoa = basis_set%npgf(iset)*ncoset(basis_set%lmax(iset))
388 sgfa = basis_set%first_sgf(1, iset)
389 egfa = sgfa + basis_set%nsgf_set(iset) - 1
390
391 max_contr(iset, ibasis) = &
392 maxval((/(sum(abs(basis_set%sphi(1:ncoa, i))), i=sgfa, egfa)/))
393
394 END DO !iset
395 END DO !ibasis
396
397 IF (ilist == 1) max_contra(:, :) = max_contr(:, :)
398 IF (ilist == 2) max_contrb(:, :) = max_contr(:, :)
399 IF (ilist == 3) max_contrc(:, :) = max_contr(:, :)
400 END DO !ilist
401 DEALLOCATE (max_contr)
402 END IF !do_screen
403
404 !To minimize memory ops in contraction, we need to pre-allocate buffers, pre-tranpose sphi_a
405 !and also trim sphi in general to have contiguous arrays
406 ALLOCATE (tspa(max_nset, nbasis), spb(max_nset, nbasis), spc(max_nset, nbasis))
407 DO ibasis = 1, nbasis
408 DO iset = 1, max_nset
409 NULLIFY (tspa(iset, ibasis)%array)
410 NULLIFY (spb(iset, ibasis)%array)
411 NULLIFY (spc(iset, ibasis)%array)
412 END DO
413 END DO
414
415 DO ilist = 1, 3
416
417 DO ibasis = 1, nbasis
418 IF (ilist == 1) basis_set => basis_set_list_a(ibasis)%gto_basis_set
419 IF (ilist == 2) basis_set => basis_set_list_b(ibasis)%gto_basis_set
420 IF (ilist == 3) basis_set => basis_set_list_c(ibasis)%gto_basis_set
421
422 DO iset = 1, basis_set%nset
423
424 ncoa = basis_set%npgf(iset)*ncoset(basis_set%lmax(iset))
425 sgfa = basis_set%first_sgf(1, iset)
426 egfa = sgfa + basis_set%nsgf_set(iset) - 1
427
428 IF (ilist == 1) THEN
429 ALLOCATE (tspa(iset, ibasis)%array(basis_set%nsgf_set(iset), ncoa))
430 tspa(iset, ibasis)%array(:, :) = transpose(basis_set%sphi(1:ncoa, sgfa:egfa))
431 ELSE IF (ilist == 2) THEN
432 ALLOCATE (spb(iset, ibasis)%array(ncoa, basis_set%nsgf_set(iset)))
433 spb(iset, ibasis)%array(:, :) = basis_set%sphi(1:ncoa, sgfa:egfa)
434 ELSE
435 ALLOCATE (spc(iset, ibasis)%array(ncoa, basis_set%nsgf_set(iset)))
436 spc(iset, ibasis)%array(:, :) = basis_set%sphi(1:ncoa, sgfa:egfa)
437 END IF
438
439 END DO !iset
440 END DO !ibasis
441 END DO !ilist
442
443 my_sort_bc = .false.
444 IF (PRESENT(only_bc_same_center)) my_sort_bc = only_bc_same_center
445
446 !Init the truncated Coulomb operator
447 CALL get_qs_env(qs_env, para_env=para_env)
448 IF (potential_parameter%potential_type == do_potential_truncated) THEN
449
450 !open the file only if necessary
451 IF (m_max > get_lmax_init()) THEN
452 IF (para_env%mepos == 0) THEN
453 CALL open_file(unit_number=unit_id, file_name=potential_parameter%filename)
454 END IF
455 CALL init(m_max, unit_id, para_env%mepos, para_env)
456 IF (para_env%mepos == 0) THEN
457 CALL close_file(unit_id)
458 END IF
459 END IF
460 END IF
461
462 !Inint the initial gamma function before the OMP region as it is not thread safe
463 CALL init_md_ftable(nmax=m_max)
464
465 !Strategy: we use the o3c iterator because it is OMP parallelized and also takes the
466 ! only_bc_same_center argument. Only the dbcsr_put_block is critical
467
468 nthread = 1
469!$ nthread = omp_get_max_threads()
470
471 ALLOCATE (o3c)
472 CALL init_o3c_container(o3c, 1, basis_set_list_a, basis_set_list_b, basis_set_list_c, &
473 ab_nl, ac_nl, only_bc_same_center=my_sort_bc)
474 CALL o3c_iterator_create(o3c, o3c_iterator, nthread=nthread)
475
476!$OMP PARALLEL DEFAULT(NONE) &
477!$OMP SHARED (pq_X,do_screen,max_nset,basis_set_list_a,max_contra,max_contrb,max_contrc,&
478!$OMP basis_set_list_b, basis_set_list_c,ncoset,screen_radius,potential_parameter,&
479!$OMP my_eps_screen,maxli,maxlj,maxlk,my_sort_bc,nthread,o3c,o3c_iterator,tspa,spb,spc) &
480!$OMP PRIVATE (lib,i,mepos,work,iset,ncoa,sgfa,egfa,nseta,iatom,ikind,jatom,jkind,katom,kkind,&
481!$OMP rij,rik,rjk,basis_set_a,nsetb,la_max,la_min,lb_max,lb_min,lc_max,lc_min,npgfa,&
482!$OMP npgfb,npgfc,nsgfa,nsgfb,nsgfc,ri,rk,first_sgfa,first_sgfb,first_sgfc,nsetc,&
483!$OMP set_radius_a,set_radius_b,set_radius_c,rj,rpgf_a,rpgf_b,rpgf_c,zeta,zetb,&
484!$OMP zetc,basis_set_b,basis_set_c,dij,dik,djk,ni,nj,nk,iabc,sabc,jset,kset,&
485!$OMP ncob,ncoc,sgfb,sgfc,egfb,egfc,sabc_ext,cpp_buffer,ccp_buffer)
486
487 mepos = 0
488!$ mepos = omp_get_thread_num()
489
490 !each thread need its own libint object (internals may change at different rates)
491 CALL cp_libint_init_3eri(lib, max(maxli, maxlj, maxlk))
492 CALL cp_libint_set_contrdepth(lib, 1)
493
494 DO WHILE (o3c_iterate(o3c_iterator, mepos=mepos) == 0)
495 CALL get_o3c_iterator_info(o3c_iterator, mepos=mepos, ikind=ikind, jkind=jkind, kkind=kkind, &
496 iatom=iatom, jatom=jatom, katom=katom, rij=rij, rik=rik)
497
498 !get first center basis info
499 basis_set_a => basis_set_list_a(ikind)%gto_basis_set
500 first_sgfa => basis_set_a%first_sgf
501 la_max => basis_set_a%lmax
502 la_min => basis_set_a%lmin
503 npgfa => basis_set_a%npgf
504 nseta = basis_set_a%nset
505 nsgfa => basis_set_a%nsgf_set
506 zeta => basis_set_a%zet
507 rpgf_a => basis_set_a%pgf_radius
508 set_radius_a => basis_set_a%set_radius
509 ni = sum(nsgfa)
510 !second center basis info
511 basis_set_b => basis_set_list_b(jkind)%gto_basis_set
512 first_sgfb => basis_set_b%first_sgf
513 lb_max => basis_set_b%lmax
514 lb_min => basis_set_b%lmin
515 npgfb => basis_set_b%npgf
516 nsetb = basis_set_b%nset
517 nsgfb => basis_set_b%nsgf_set
518 zetb => basis_set_b%zet
519 rpgf_b => basis_set_b%pgf_radius
520 set_radius_b => basis_set_b%set_radius
521 nj = sum(nsgfb)
522 !third center basis info
523 basis_set_c => basis_set_list_c(kkind)%gto_basis_set
524 first_sgfc => basis_set_c%first_sgf
525 lc_max => basis_set_c%lmax
526 lc_min => basis_set_c%lmin
527 npgfc => basis_set_c%npgf
528 nsetc = basis_set_c%nset
529 nsgfc => basis_set_c%nsgf_set
530 zetc => basis_set_c%zet
531 rpgf_c => basis_set_c%pgf_radius
532 set_radius_c => basis_set_c%set_radius
533 nk = sum(nsgfc)
534
535 !position and distances, only relative pos matter for libint
536 rjk = rik - rij
537 ri = 0.0_dp
538 rj = rij ! ri + rij
539 rk = rik ! ri + rik
540
541 djk = norm2(rjk)
542 dij = norm2(rij)
543 dik = norm2(rik)
544
545 !sgf integrals
546 ALLOCATE (iabc(ni, nj, nk))
547 iabc(:, :, :) = 0.0_dp
548
549 DO iset = 1, nseta
550 ncoa = npgfa(iset)*ncoset(la_max(iset))
551 sgfa = first_sgfa(1, iset)
552 egfa = sgfa + nsgfa(iset) - 1
553
554 DO jset = 1, nsetb
555 ncob = npgfb(jset)*ncoset(lb_max(jset))
556 sgfb = first_sgfb(1, jset)
557 egfb = sgfb + nsgfb(jset) - 1
558
559 !screening (overlap)
560 IF (set_radius_a(iset) + set_radius_b(jset) < dij) cycle
561
562 DO kset = 1, nsetc
563 ncoc = npgfc(kset)*ncoset(lc_max(kset))
564 sgfc = first_sgfc(1, kset)
565 egfc = sgfc + nsgfc(kset) - 1
566
567 !screening (potential)
568 IF (set_radius_a(iset) + set_radius_c(kset) + screen_radius < dik) cycle
569 IF (set_radius_b(jset) + set_radius_c(kset) + screen_radius < djk) cycle
570
571 !pgf integrals
572 ALLOCATE (sabc(ncoa, ncob, ncoc))
573 sabc(:, :, :) = 0.0_dp
574
575 IF (do_screen) THEN
576 CALL eri_3center(sabc, la_min(iset), la_max(iset), npgfa(iset), zeta(:, iset), &
577 rpgf_a(:, iset), ri, lb_min(jset), lb_max(jset), npgfb(jset), &
578 zetb(:, jset), rpgf_b(:, jset), rj, lc_min(kset), lc_max(kset), &
579 npgfc(kset), zetc(:, kset), rpgf_c(:, kset), rk, dij, dik, &
580 djk, lib, potential_parameter, int_abc_ext=sabc_ext)
581 IF (my_eps_screen > sabc_ext*(max_contra(iset, ikind)* &
582 max_contrb(jset, jkind)* &
583 max_contrc(kset, kkind))) THEN
584 DEALLOCATE (sabc)
585 cycle
586 END IF
587 ELSE
588 CALL eri_3center(sabc, la_min(iset), la_max(iset), npgfa(iset), zeta(:, iset), &
589 rpgf_a(:, iset), ri, lb_min(jset), lb_max(jset), npgfb(jset), &
590 zetb(:, jset), rpgf_b(:, jset), rj, lc_min(kset), lc_max(kset), &
591 npgfc(kset), zetc(:, kset), rpgf_c(:, kset), rk, dij, dik, &
592 djk, lib, potential_parameter)
593 END IF
594
595 ALLOCATE (work(nsgfa(iset), nsgfb(jset), nsgfc(kset)))
596
597 CALL abc_contract_xsmm(work, sabc, tspa(iset, ikind)%array, spb(jset, jkind)%array, &
598 spc(kset, kkind)%array, ncoa, ncob, ncoc, nsgfa(iset), &
599 nsgfb(jset), nsgfc(kset), cpp_buffer, ccp_buffer)
600
601 iabc(sgfa:egfa, sgfb:egfb, sgfc:egfc) = work(:, :, :)
602 DEALLOCATE (sabc, work)
603
604 END DO !kset
605 END DO !jset
606 END DO !iset
607
608 !Add the integral to the proper tensor block
609!$OMP CRITICAL
610 CALL dbt_put_block(pq_x, [iatom, jatom, katom], shape(iabc), iabc, summation=.true.)
611!$OMP END CRITICAL
612
613 DEALLOCATE (iabc)
614 END DO !o3c_iterator
615
616 IF (ALLOCATED(ccp_buffer)) DEALLOCATE (ccp_buffer)
617 IF (ALLOCATED(cpp_buffer)) DEALLOCATE (cpp_buffer)
618
619 CALL cp_libint_cleanup_3eri(lib)
620
621!$OMP END PARALLEL
622 CALL o3c_iterator_release(o3c_iterator)
623 CALL release_o3c_container(o3c)
624 DEALLOCATE (o3c)
625
626 DO iset = 1, max_nset
627 DO ibasis = 1, nbasis
628 IF (ASSOCIATED(tspa(iset, ibasis)%array)) DEALLOCATE (tspa(iset, ibasis)%array)
629 IF (ASSOCIATED(spb(iset, ibasis)%array)) DEALLOCATE (spb(iset, ibasis)%array)
630 IF (ASSOCIATED(spc(iset, ibasis)%array)) DEALLOCATE (spc(iset, ibasis)%array)
631 END DO
632 END DO
633 DEALLOCATE (tspa, spb, spc)
634
635 CALL timestop(handle)
636
637 END SUBROUTINE fill_pqx_tensor
638
639! **************************************************************************************************
640!> \brief Builds a neighbor lists set for overlaping 2-center S_ab, where b is restricted on a
641!> a given list of atoms. Used for Coulomb RI where (aI|P) = sum_b C_bI (ab|P), where
642!> contraction coeff C_bI is assumed to be non-zero only on excited atoms
643!> \param ab_list the neighbor list
644!> \param basis_a basis set list for atom a
645!> \param basis_b basis set list for atom b
646!> \param qs_env ...
647!> \param excited_atoms the indices of the excited atoms on which b is centered
648!> \param ext_dist2d use an external distribution2d
649! **************************************************************************************************
650 SUBROUTINE build_xas_tdp_ovlp_nl(ab_list, basis_a, basis_b, qs_env, excited_atoms, ext_dist2d)
651
652 TYPE(neighbor_list_set_p_type), DIMENSION(:), &
653 POINTER :: ab_list
654 TYPE(gto_basis_set_p_type), DIMENSION(:), POINTER :: basis_a, basis_b
655 TYPE(qs_environment_type), POINTER :: qs_env
656 INTEGER, DIMENSION(:), INTENT(IN), OPTIONAL :: excited_atoms
657 TYPE(distribution_2d_type), OPTIONAL, POINTER :: ext_dist2d
658
659 INTEGER :: ikind, nkind
660 LOGICAL :: my_restrictb
661 LOGICAL, ALLOCATABLE, DIMENSION(:) :: a_present, b_present
662 REAL(dp) :: subcells
663 REAL(dp), ALLOCATABLE, DIMENSION(:) :: a_radius, b_radius
664 REAL(dp), ALLOCATABLE, DIMENSION(:, :) :: pair_radius
665 TYPE(atomic_kind_type), DIMENSION(:), POINTER :: atomic_kind_set
666 TYPE(cell_type), POINTER :: cell
667 TYPE(distribution_1d_type), POINTER :: distribution_1d
668 TYPE(distribution_2d_type), POINTER :: distribution_2d
669 TYPE(local_atoms_type), ALLOCATABLE, DIMENSION(:) :: atom2d
670 TYPE(molecule_type), DIMENSION(:), POINTER :: molecule_set
671 TYPE(particle_type), DIMENSION(:), POINTER :: particle_set
672
673 NULLIFY (atomic_kind_set, distribution_1d, distribution_2d, molecule_set, particle_set, cell)
674
675! Initialization
676 CALL get_qs_env(qs_env, nkind=nkind)
677 CALL section_vals_val_get(qs_env%input, "DFT%SUBCELLS", r_val=subcells)
678
679 my_restrictb = .false.
680 IF (PRESENT(excited_atoms)) THEN
681 my_restrictb = .true.
682 END IF
683
684 ALLOCATE (a_present(nkind), b_present(nkind))
685 a_present = .false.
686 b_present = .false.
687 ALLOCATE (a_radius(nkind), b_radius(nkind))
688 a_radius = 0.0_dp
689 b_radius = 0.0_dp
690
691! Set up the radii
692 DO ikind = 1, nkind
693 IF (ASSOCIATED(basis_a(ikind)%gto_basis_set)) THEN
694 a_present(ikind) = .true.
695 CALL get_gto_basis_set(basis_a(ikind)%gto_basis_set, kind_radius=a_radius(ikind))
696 END IF
697
698 IF (ASSOCIATED(basis_b(ikind)%gto_basis_set)) THEN
699 b_present(ikind) = .true.
700 CALL get_gto_basis_set(basis_b(ikind)%gto_basis_set, kind_radius=b_radius(ikind))
701 END IF
702 END DO !ikind
703
704 ALLOCATE (pair_radius(nkind, nkind))
705 pair_radius = 0.0_dp
706 CALL pair_radius_setup(a_present, b_present, a_radius, b_radius, pair_radius)
707
708! Set up the nl
709 CALL get_qs_env(qs_env, atomic_kind_set=atomic_kind_set, cell=cell, &
710 distribution_2d=distribution_2d, local_particles=distribution_1d, &
711 particle_set=particle_set, molecule_set=molecule_set)
712
713 !use an external distribution_2d if required
714 IF (PRESENT(ext_dist2d)) distribution_2d => ext_dist2d
715
716 ALLOCATE (atom2d(nkind))
717 CALL atom2d_build(atom2d, distribution_1d, distribution_2d, atomic_kind_set, &
718 molecule_set, .false., particle_set)
719
720 IF (my_restrictb) THEN
721
722 CALL build_neighbor_lists(ab_list, particle_set, atom2d, cell, pair_radius, subcells, &
723 atomb_to_keep=excited_atoms, nlname="XAS_TDP_ovlp_nl")
724
725 ELSE
726
727 CALL build_neighbor_lists(ab_list, particle_set, atom2d, cell, pair_radius, subcells, &
728 nlname="XAS_TDP_ovlp_nl")
729
730 END IF
731! Clean-up
732 CALL atom2d_cleanup(atom2d)
733
734 END SUBROUTINE build_xas_tdp_ovlp_nl
735
736! **************************************************************************************************
737!> \brief Builds a neighbor lists set taylored for 3-center integral within XAS TDP, such that only
738!> excited atoms are taken into account for the list_c
739!> \param ac_list the neighbor list ready for 3-center integrals
740!> \param basis_a basis set list for atom a
741!> \param basis_c basis set list for atom c
742!> \param op_type to indicate whther the list should be built with overlap, Coulomb or else in mind
743!> \param qs_env ...
744!> \param excited_atoms the indices of the excited atoms to consider (if not given, all atoms are taken)
745!> \param x_range in case some truncated/screened operator is used, gives its range
746!> \param ext_dist2d external distribution_2d to be used
747!> \note Based on setup_neighbor_list with added features
748! **************************************************************************************************
749 SUBROUTINE build_xas_tdp_3c_nl(ac_list, basis_a, basis_c, op_type, qs_env, excited_atoms, &
750 x_range, ext_dist2d)
751
752 TYPE(neighbor_list_set_p_type), DIMENSION(:), &
753 POINTER :: ac_list
754 TYPE(gto_basis_set_p_type), DIMENSION(:), POINTER :: basis_a, basis_c
755 INTEGER, INTENT(IN) :: op_type
756 TYPE(qs_environment_type), POINTER :: qs_env
757 INTEGER, DIMENSION(:), INTENT(IN), OPTIONAL :: excited_atoms
758 REAL(dp), INTENT(IN), OPTIONAL :: x_range
759 TYPE(distribution_2d_type), OPTIONAL, POINTER :: ext_dist2d
760
761 INTEGER :: ikind, nkind
762 LOGICAL :: sort_atoms
763 LOGICAL, ALLOCATABLE, DIMENSION(:) :: a_present, c_present
764 REAL(dp) :: subcells
765 REAL(dp), ALLOCATABLE, DIMENSION(:) :: a_radius, c_radius
766 REAL(dp), ALLOCATABLE, DIMENSION(:, :) :: pair_radius
767 TYPE(atomic_kind_type), DIMENSION(:), POINTER :: atomic_kind_set
768 TYPE(cell_type), POINTER :: cell
769 TYPE(distribution_1d_type), POINTER :: distribution_1d
770 TYPE(distribution_2d_type), POINTER :: distribution_2d
771 TYPE(local_atoms_type), ALLOCATABLE, DIMENSION(:) :: atom2d
772 TYPE(molecule_type), DIMENSION(:), POINTER :: molecule_set
773 TYPE(particle_type), DIMENSION(:), POINTER :: particle_set
774
775 NULLIFY (atomic_kind_set, distribution_1d, distribution_2d, molecule_set, particle_set, cell)
776
777! Initialization
778 CALL get_qs_env(qs_env, nkind=nkind)
779 CALL section_vals_val_get(qs_env%input, "DFT%SUBCELLS", r_val=subcells)
780 sort_atoms = .false.
781 IF ((PRESENT(excited_atoms))) sort_atoms = .true.
782
783 ALLOCATE (a_present(nkind), c_present(nkind))
784 a_present = .false.
785 c_present = .false.
786 ALLOCATE (a_radius(nkind), c_radius(nkind))
787 a_radius = 0.0_dp
788 c_radius = 0.0_dp
789
790! Set up the radii, depending on the operator type
791 IF (op_type == do_potential_id) THEN
792
793 !overlap => use the kind radius for both a and c
794 DO ikind = 1, nkind
795 !orbital basis set
796 IF (ASSOCIATED(basis_a(ikind)%gto_basis_set)) THEN
797 a_present(ikind) = .true.
798 CALL get_gto_basis_set(basis_a(ikind)%gto_basis_set, kind_radius=a_radius(ikind))
799 END IF
800 !RI_XAS basis set
801 IF (ASSOCIATED(basis_c(ikind)%gto_basis_set)) THEN
802 c_present(ikind) = .true.
803 CALL get_gto_basis_set(basis_c(ikind)%gto_basis_set, kind_radius=c_radius(ikind))
804 END IF
805 END DO !ikind
806
807 ELSE IF (op_type == do_potential_coulomb) THEN
808
809 !Coulomb operator, virtually infinite range => set c_radius to arbitrarily large number
810 DO ikind = 1, nkind
811 IF (ASSOCIATED(basis_c(ikind)%gto_basis_set)) THEN
812 c_present(ikind) = .true.
813 c_radius(ikind) = 1000000.0_dp
814 END IF
815 IF (ASSOCIATED(basis_a(ikind)%gto_basis_set)) a_present(ikind) = .true.
816 END DO !ikind
817
818 ELSE IF (op_type == do_potential_truncated .OR. op_type == do_potential_short) THEN
819
820 !Truncated coulomb/short range: set c_radius to x_range + the kind_radii
821 DO ikind = 1, nkind
822 IF (ASSOCIATED(basis_a(ikind)%gto_basis_set)) THEN
823 a_present(ikind) = .true.
824 CALL get_gto_basis_set(basis_a(ikind)%gto_basis_set, kind_radius=a_radius(ikind))
825 END IF
826 IF (ASSOCIATED(basis_c(ikind)%gto_basis_set)) THEN
827 c_present(ikind) = .true.
828 CALL get_gto_basis_set(basis_c(ikind)%gto_basis_set, kind_radius=c_radius(ikind))
829 c_radius(ikind) = c_radius(ikind) + x_range
830 END IF
831 END DO !ikind
832
833 ELSE
834 cpabort("Operator not known")
835 END IF
836
837 ALLOCATE (pair_radius(nkind, nkind))
838 pair_radius = 0.0_dp
839 CALL pair_radius_setup(a_present, c_present, a_radius, c_radius, pair_radius)
840
841! Actually setup the list
842 CALL get_qs_env(qs_env, atomic_kind_set=atomic_kind_set, cell=cell, &
843 distribution_2d=distribution_2d, local_particles=distribution_1d, &
844 particle_set=particle_set, molecule_set=molecule_set)
845
846 !use an external distribution_2d if required
847 IF (PRESENT(ext_dist2d)) distribution_2d => ext_dist2d
848
849 ALLOCATE (atom2d(nkind))
850 CALL atom2d_build(atom2d, distribution_1d, distribution_2d, atomic_kind_set, &
851 molecule_set, .false., particle_set)
852
853 IF (sort_atoms) THEN
854 CALL build_neighbor_lists(ac_list, particle_set, atom2d, cell, pair_radius, subcells, &
855 operator_type="ABC", atomb_to_keep=excited_atoms, &
856 nlname="XAS_TDP_3c_nl")
857 ELSE
858 CALL build_neighbor_lists(ac_list, particle_set, atom2d, cell, pair_radius, subcells, &
859 operator_type="ABC", nlname="XAS_TDP_3c_nl")
860 END IF
861
862! Clean-up
863 CALL atom2d_cleanup(atom2d)
864
865 END SUBROUTINE build_xas_tdp_3c_nl
866
867! **************************************************************************************************
868!> \brief Returns an optimized distribution_2d for the given neighbor lists based on an evaluation
869!> of the cost of the corresponding 3-center integrals
870!> \param opt_3c_dist2d the optimized distribution_2d
871!> \param ab_list ...
872!> \param ac_list ...
873!> \param basis_set_a ...
874!> \param basis_set_b ...
875!> \param basis_set_c ...
876!> \param qs_env ...
877!> \param only_bc_same_center ...
878! **************************************************************************************************
879 SUBROUTINE get_opt_3c_dist2d(opt_3c_dist2d, ab_list, ac_list, basis_set_a, basis_set_b, &
880 basis_set_c, qs_env, only_bc_same_center)
881
882 TYPE(distribution_2d_type), POINTER :: opt_3c_dist2d
883 TYPE(neighbor_list_set_p_type), DIMENSION(:), &
884 POINTER :: ab_list, ac_list
885 TYPE(gto_basis_set_p_type), DIMENSION(:), POINTER :: basis_set_a, basis_set_b, basis_set_c
886 TYPE(qs_environment_type), POINTER :: qs_env
887 LOGICAL, INTENT(IN), OPTIONAL :: only_bc_same_center
888
889 CHARACTER(len=*), PARAMETER :: routinen = 'get_opt_3c_dist2d'
890
891 INTEGER :: handle, i, iatom, ikind, ip, jatom, &
892 jkind, kkind, mypcol, myprow, n, &
893 natom, nkind, npcol, nprow, nsgfa, &
894 nsgfb, nsgfc
895 INTEGER, ALLOCATABLE, DIMENSION(:) :: nparticle_local_col, nparticle_local_row
896 INTEGER, DIMENSION(:, :), POINTER :: col_dist, row_dist
897 LOGICAL :: my_sort_bc
898 REAL(dp) :: cost, rab(3), rac(3), rbc(3)
899 REAL(dp), ALLOCATABLE, DIMENSION(:) :: col_cost, col_proc_cost, row_cost, &
900 row_proc_cost
901 TYPE(cp_1d_i_p_type), DIMENSION(:), POINTER :: local_particle_col, local_particle_row
902 TYPE(cp_blacs_env_type), POINTER :: blacs_env
903 TYPE(mp_para_env_type), POINTER :: para_env
904 TYPE(neighbor_list_iterator_p_type), &
905 DIMENSION(:), POINTER :: ab_iter, ac_iter
906 TYPE(particle_type), DIMENSION(:), POINTER :: particle_set
907 TYPE(qs_kind_type), DIMENSION(:), POINTER :: qs_kind_set
908
909 NULLIFY (para_env, col_dist, row_dist, blacs_env, qs_kind_set, particle_set)
910 NULLIFY (local_particle_col, local_particle_row, ab_iter, ac_iter)
911
912 CALL timeset(routinen, handle)
913
914 !Idea: create a,b and a,c nl_iterators in the original dist, then loop over them and compute the
915 ! cost of each ab pairs and project on the col/row. Then distribute the atom col/row to
916 ! the proc col/row in order to spread out the cost as much as possible
917
918 my_sort_bc = .false.
919 IF (PRESENT(only_bc_same_center)) my_sort_bc = only_bc_same_center
920
921 CALL get_qs_env(qs_env, natom=natom, para_env=para_env, blacs_env=blacs_env, &
922 qs_kind_set=qs_kind_set, particle_set=particle_set, nkind=nkind)
923
924 myprow = blacs_env%mepos(1) + 1
925 mypcol = blacs_env%mepos(2) + 1
926 nprow = blacs_env%num_pe(1)
927 npcol = blacs_env%num_pe(2)
928
929 ALLOCATE (col_cost(natom), row_cost(natom))
930 col_cost = 0.0_dp; row_cost = 0.0_dp
931
932 ALLOCATE (row_dist(natom, 2), col_dist(natom, 2))
933 row_dist = 1; col_dist = 1
934
935 CALL neighbor_list_iterator_create(ab_iter, ab_list)
936 CALL neighbor_list_iterator_create(ac_iter, ac_list, search=.true.)
937 DO WHILE (neighbor_list_iterate(ab_iter) == 0)
938 CALL get_iterator_info(ab_iter, ikind=ikind, jkind=jkind, iatom=iatom, jatom=jatom, r=rab)
939
940 DO kkind = 1, nkind
941 CALL nl_set_sub_iterator(ac_iter, ikind, kkind, iatom)
942
943 DO WHILE (nl_sub_iterate(ac_iter) == 0)
944
945 IF (my_sort_bc) THEN
946 !only take a,b,c if b,c (or a,c because of symmetry) share the same center
947 CALL get_iterator_info(ac_iter, r=rac)
948 rbc(:) = rac(:) - rab(:)
949 IF (.NOT. (all(abs(rbc) .LE. 1.0e-8_dp) .OR. all(abs(rac) .LE. 1.0e-8_dp))) cycle
950
951 END IF
952
953 !Use the size of integral as measure as contraciton cost seems to dominate
954 nsgfa = basis_set_a(ikind)%gto_basis_set%nsgf
955 nsgfb = basis_set_b(jkind)%gto_basis_set%nsgf
956 nsgfc = basis_set_c(kkind)%gto_basis_set%nsgf
957
958 cost = real(nsgfa*nsgfb*nsgfc, dp)
959
960 row_cost(iatom) = row_cost(iatom) + cost
961 col_cost(jatom) = col_cost(jatom) + cost
962
963 END DO !ac_iter
964 END DO !kkind
965 END DO !ab_iter
966 CALL neighbor_list_iterator_release(ab_iter)
967 CALL neighbor_list_iterator_release(ac_iter)
968
969 CALL para_env%sum(row_cost)
970 CALL para_env%sum(col_cost)
971
972 !Distribute the cost as evenly as possible
973 ALLOCATE (col_proc_cost(npcol), row_proc_cost(nprow))
974 col_proc_cost = 0.0_dp; row_proc_cost = 0.0_dp
975 DO i = 1, natom
976 iatom = maxloc(row_cost, 1)
977 ip = minloc(row_proc_cost, 1)
978 row_proc_cost(ip) = row_proc_cost(ip) + row_cost(iatom)
979 row_dist(iatom, 1) = ip
980 row_cost(iatom) = 0.0_dp
981
982 iatom = maxloc(col_cost, 1)
983 ip = minloc(col_proc_cost, 1)
984 col_proc_cost(ip) = col_proc_cost(ip) + col_cost(iatom)
985 col_dist(iatom, 1) = ip
986 col_cost(iatom) = 0.0_dp
987 END DO
988
989 !the usual stuff
990 ALLOCATE (local_particle_col(nkind), local_particle_row(nkind))
991 ALLOCATE (nparticle_local_row(nkind), nparticle_local_col(nkind))
992 nparticle_local_row = 0; nparticle_local_col = 0
993
994 DO iatom = 1, natom
995 ikind = particle_set(iatom)%atomic_kind%kind_number
996
997 IF (row_dist(iatom, 1) == myprow) nparticle_local_row(ikind) = nparticle_local_row(ikind) + 1
998 IF (col_dist(iatom, 1) == mypcol) nparticle_local_col(ikind) = nparticle_local_col(ikind) + 1
999 END DO
1000
1001 DO ikind = 1, nkind
1002 n = nparticle_local_row(ikind)
1003 ALLOCATE (local_particle_row(ikind)%array(n))
1004
1005 n = nparticle_local_col(ikind)
1006 ALLOCATE (local_particle_col(ikind)%array(n))
1007 END DO
1008
1009 nparticle_local_row = 0; nparticle_local_col = 0
1010 DO iatom = 1, natom
1011 ikind = particle_set(iatom)%atomic_kind%kind_number
1012
1013 IF (row_dist(iatom, 1) == myprow) THEN
1014 nparticle_local_row(ikind) = nparticle_local_row(ikind) + 1
1015 local_particle_row(ikind)%array(nparticle_local_row(ikind)) = iatom
1016 END IF
1017 IF (col_dist(iatom, 1) == mypcol) THEN
1018 nparticle_local_col(ikind) = nparticle_local_col(ikind) + 1
1019 local_particle_col(ikind)%array(nparticle_local_col(ikind)) = iatom
1020 END IF
1021 END DO
1022
1023 !Finally create the dist_2d
1024 row_dist(:, 1) = row_dist(:, 1) - 1
1025 col_dist(:, 1) = col_dist(:, 1) - 1
1026 CALL distribution_2d_create(opt_3c_dist2d, row_distribution_ptr=row_dist, &
1027 col_distribution_ptr=col_dist, local_rows_ptr=local_particle_row, &
1028 local_cols_ptr=local_particle_col, blacs_env=blacs_env)
1029
1030 CALL timestop(handle)
1031
1032 END SUBROUTINE get_opt_3c_dist2d
1033
1034! **************************************************************************************************
1035!> \brief Computes the RI exchange 3-center integrals (ab|c), where c is from the RI_XAS basis and
1036!> centered on excited atoms and kind. The operator used is that of the RI metric
1037!> \param ex_atoms excited atoms on which the third center is located
1038!> \param xas_tdp_env ...
1039!> \param xas_tdp_control ...
1040!> \param qs_env ...
1041!> \note This routine is called once for each excited atom. Because there are many different a,b
1042!> pairs involved, load balance is ok. This allows memory saving
1043! **************************************************************************************************
1044 SUBROUTINE compute_ri_3c_exchange(ex_atoms, xas_tdp_env, xas_tdp_control, qs_env)
1045
1046 INTEGER, DIMENSION(:), INTENT(IN) :: ex_atoms
1047 TYPE(xas_tdp_env_type), POINTER :: xas_tdp_env
1048 TYPE(xas_tdp_control_type), POINTER :: xas_tdp_control
1049 TYPE(qs_environment_type), POINTER :: qs_env
1050
1051 CHARACTER(len=*), PARAMETER :: routinen = 'compute_ri_3c_exchange'
1052
1053 INTEGER :: handle, natom, nkind
1054 INTEGER, ALLOCATABLE, DIMENSION(:) :: blk_size_orb, blk_size_ri
1055 TYPE(dbcsr_distribution_type) :: opt_dbcsr_dist
1056 TYPE(gto_basis_set_p_type), DIMENSION(:), POINTER :: basis_set_orb, basis_set_ri
1057 TYPE(mp_para_env_type), POINTER :: para_env
1058 TYPE(neighbor_list_set_p_type), DIMENSION(:), &
1059 POINTER :: ab_list, ac_list
1060 TYPE(particle_type), DIMENSION(:), POINTER :: particle_set
1061 TYPE(qs_kind_type), DIMENSION(:), POINTER :: qs_kind_set
1062
1063 NULLIFY (basis_set_ri, basis_set_orb, ac_list, ab_list, qs_kind_set, para_env, particle_set)
1064
1065 CALL timeset(routinen, handle)
1066
1067! Take what we need from the qs_env
1068 CALL get_qs_env(qs_env, nkind=nkind, qs_kind_set=qs_kind_set, para_env=para_env, &
1069 natom=natom, particle_set=particle_set)
1070
1071! Build the basis set lists
1072 ALLOCATE (basis_set_ri(nkind))
1073 ALLOCATE (basis_set_orb(nkind))
1074 CALL basis_set_list_setup(basis_set_ri, "RI_XAS", qs_kind_set)
1075 CALL basis_set_list_setup(basis_set_orb, "ORB", qs_kind_set)
1076
1077! Get the optimized distribution 2d for theses integrals (and store it in xas_tdp_env)
1078 CALL build_xas_tdp_ovlp_nl(ab_list, basis_set_orb, basis_set_orb, qs_env)
1079 CALL build_xas_tdp_3c_nl(ac_list, basis_set_orb, basis_set_ri, &
1080 xas_tdp_control%ri_m_potential%potential_type, qs_env, &
1081 excited_atoms=ex_atoms, x_range=xas_tdp_control%ri_m_potential%cutoff_radius)
1082
1083 CALL get_opt_3c_dist2d(xas_tdp_env%opt_dist2d_ex, ab_list, ac_list, basis_set_orb, &
1084 basis_set_orb, basis_set_ri, qs_env)
1085 CALL release_neighbor_list_sets(ab_list)
1086 CALL release_neighbor_list_sets(ac_list)
1087
1088! Build the ab and ac centers neighbor lists based on the optimized distribution
1089 CALL build_xas_tdp_ovlp_nl(ab_list, basis_set_orb, basis_set_orb, qs_env, &
1090 ext_dist2d=xas_tdp_env%opt_dist2d_ex)
1091 CALL build_xas_tdp_3c_nl(ac_list, basis_set_orb, basis_set_ri, &
1092 xas_tdp_control%ri_m_potential%potential_type, qs_env, &
1093 excited_atoms=ex_atoms, x_range=xas_tdp_control%ri_m_potential%cutoff_radius, &
1094 ext_dist2d=xas_tdp_env%opt_dist2d_ex)
1095
1096! Allocate, init and compute the integrals.
1097 ALLOCATE (blk_size_orb(natom), blk_size_ri(natom))
1098 CALL cp_dbcsr_dist2d_to_dist(xas_tdp_env%opt_dist2d_ex, opt_dbcsr_dist)
1099 CALL get_particle_set(particle_set, qs_kind_set, nsgf=blk_size_orb, basis=basis_set_orb)
1100 CALL get_particle_set(particle_set, qs_kind_set, nsgf=blk_size_ri, basis=basis_set_ri)
1101
1102 ALLOCATE (xas_tdp_env%ri_3c_ex)
1103 CALL create_pqx_tensor(xas_tdp_env%ri_3c_ex, ab_list, ac_list, opt_dbcsr_dist, blk_size_orb, &
1104 blk_size_orb, blk_size_ri)
1105 CALL fill_pqx_tensor(xas_tdp_env%ri_3c_ex, ab_list, ac_list, basis_set_orb, basis_set_orb, &
1106 basis_set_ri, xas_tdp_control%ri_m_potential, qs_env, &
1107 eps_screen=xas_tdp_control%eps_screen)
1108
1109! Clean-up
1110 CALL release_neighbor_list_sets(ab_list)
1111 CALL release_neighbor_list_sets(ac_list)
1112 CALL dbcsr_distribution_release(opt_dbcsr_dist)
1113 DEALLOCATE (basis_set_ri, basis_set_orb)
1114
1115 !not strictly necessary but avoid having any load unbalance here being reported in the
1116 !timings for other routines
1117 CALL para_env%sync()
1118
1119 CALL timestop(handle)
1120
1121 END SUBROUTINE compute_ri_3c_exchange
1122
1123! **************************************************************************************************
1124!> \brief Computes the RI Coulomb 3-center integrals (ab|c), where c is from the RI_XAS basis and
1125!> centered on the excited atoms of xas_tdp_env
1126!> \param xas_tdp_env ...
1127!> \param qs_env ...
1128!> \note The ri_3c_coul tensor of xas_tdp_env is defined and allocated here. Only computed once
1129!> for the whole system (for optimized load balance). Ok because not too much memory needed
1130! **************************************************************************************************
1131 SUBROUTINE compute_ri_3c_coulomb(xas_tdp_env, qs_env)
1132
1133 TYPE(xas_tdp_env_type), POINTER :: xas_tdp_env
1134 TYPE(qs_environment_type), POINTER :: qs_env
1135
1136 CHARACTER(len=*), PARAMETER :: routinen = 'compute_ri_3c_coulomb'
1137
1138 INTEGER :: handle, natom, nkind
1139 INTEGER, ALLOCATABLE, DIMENSION(:) :: blk_size_orb, blk_size_ri
1140 TYPE(dbcsr_distribution_type) :: opt_dbcsr_dist
1141 TYPE(gto_basis_set_p_type), DIMENSION(:), POINTER :: basis_set_orb, basis_set_ri
1142 TYPE(libint_potential_type) :: pot
1143 TYPE(mp_para_env_type), POINTER :: para_env
1144 TYPE(neighbor_list_set_p_type), DIMENSION(:), &
1145 POINTER :: ab_list, ac_list
1146 TYPE(particle_type), DIMENSION(:), POINTER :: particle_set
1147 TYPE(qs_kind_type), DIMENSION(:), POINTER :: qs_kind_set
1148
1149 NULLIFY (basis_set_ri, basis_set_orb, ac_list, ab_list, qs_kind_set, para_env, particle_set)
1150
1151 CALL timeset(routinen, handle)
1152
1153! Take what we need from the qs_env
1154 CALL get_qs_env(qs_env, nkind=nkind, qs_kind_set=qs_kind_set, para_env=para_env, &
1155 natom=natom, particle_set=particle_set)
1156
1157! Build the basis set lists
1158 ALLOCATE (basis_set_ri(nkind))
1159 ALLOCATE (basis_set_orb(nkind))
1160 CALL basis_set_list_setup(basis_set_ri, "RI_XAS", qs_kind_set)
1161 CALL basis_set_list_setup(basis_set_orb, "ORB", qs_kind_set)
1162
1163! Get the optimized distribution 2d for these integrals (and store it in xas_tdp_env)
1164 CALL build_xas_tdp_ovlp_nl(ab_list, basis_set_orb, basis_set_orb, qs_env, &
1165 excited_atoms=xas_tdp_env%ex_atom_indices)
1166 CALL build_xas_tdp_3c_nl(ac_list, basis_set_orb, basis_set_ri, do_potential_id, &
1167 qs_env, excited_atoms=xas_tdp_env%ex_atom_indices)
1168 CALL get_opt_3c_dist2d(xas_tdp_env%opt_dist2d_coul, ab_list, ac_list, basis_set_orb, &
1169 basis_set_orb, basis_set_ri, qs_env, only_bc_same_center=.true.)
1170 CALL release_neighbor_list_sets(ab_list)
1171 CALL release_neighbor_list_sets(ac_list)
1172
1173! Build a neighbor list for the ab centers. Assume (aI|c) = sum_b c_bI (ab|c), with c_bI only
1174! non-zero for b centered on the same atom as c => build overlap nl, but only keeping b if centered
1175! on an excited atom
1176 CALL build_xas_tdp_ovlp_nl(ab_list, basis_set_orb, basis_set_orb, qs_env, &
1177 excited_atoms=xas_tdp_env%ex_atom_indices, &
1178 ext_dist2d=xas_tdp_env%opt_dist2d_coul)
1179
1180! Build a neighbor list for the ac centers. Since we later contract as (aI|c) and we assume I is
1181! very localized on the same atom as c, we take a,c as neighbors if they overlap
1182 CALL build_xas_tdp_3c_nl(ac_list, basis_set_orb, basis_set_ri, do_potential_id, &
1183 qs_env, excited_atoms=xas_tdp_env%ex_atom_indices, &
1184 ext_dist2d=xas_tdp_env%opt_dist2d_coul)
1185
1186! Allocate, init and compute the integrals
1187 ALLOCATE (blk_size_orb(natom), blk_size_ri(natom))
1188 CALL cp_dbcsr_dist2d_to_dist(xas_tdp_env%opt_dist2d_coul, opt_dbcsr_dist)
1189 CALL get_particle_set(particle_set, qs_kind_set, nsgf=blk_size_orb, basis=basis_set_orb)
1190 CALL get_particle_set(particle_set, qs_kind_set, nsgf=blk_size_ri, basis=basis_set_ri)
1191 pot%potential_type = do_potential_coulomb
1192
1193 ALLOCATE (xas_tdp_env%ri_3c_coul)
1194 CALL create_pqx_tensor(xas_tdp_env%ri_3c_coul, ab_list, ac_list, opt_dbcsr_dist, blk_size_orb, &
1195 blk_size_orb, blk_size_ri, only_bc_same_center=.true.)
1196 CALL fill_pqx_tensor(xas_tdp_env%ri_3c_coul, ab_list, ac_list, basis_set_orb, basis_set_orb, &
1197 basis_set_ri, pot, qs_env, only_bc_same_center=.true.)
1198
1199! Clean-up
1200 CALL release_neighbor_list_sets(ab_list)
1201 CALL release_neighbor_list_sets(ac_list)
1202 CALL dbcsr_distribution_release(opt_dbcsr_dist)
1203 DEALLOCATE (basis_set_ri, basis_set_orb)
1204
1205 !not strictly necessary but avoid having any load unbalance here being reported in the
1206 !timings for other routines
1207 CALL para_env%sync()
1208
1209 CALL timestop(handle)
1210
1211 END SUBROUTINE compute_ri_3c_coulomb
1212
1213! **************************************************************************************************
1214!> \brief Computes the two-center Exchange integral needed for the RI in kernel calculation. Stores
1215!> the integrals in the xas_tdp_env as global (small) arrays. Does that for a given excited
1216!> kind. The quantity stored is M^-1 (P|Q) M^-1, where M is the RI metric. If the metric is
1217!> the same as the exchange potential, then we end up with the V-approximation (P|Q)^-1
1218!> By default (if no metric), the ri_m_potential is a copy of the x_potential
1219!> \param ex_kind ...
1220!> \param xas_tdp_env ...
1221!> \param xas_tdp_control ...
1222!> \param qs_env ...
1223!> \note Computes all these integrals in non-PBCs as we assume that the range is short enough that
1224!> atoms do not exchange with their periodic images
1225! **************************************************************************************************
1226 SUBROUTINE compute_ri_exchange2_int(ex_kind, xas_tdp_env, xas_tdp_control, qs_env)
1227
1228 INTEGER, INTENT(IN) :: ex_kind
1229 TYPE(xas_tdp_env_type), POINTER :: xas_tdp_env
1230 TYPE(xas_tdp_control_type), POINTER :: xas_tdp_control
1231 TYPE(qs_environment_type), POINTER :: qs_env
1232
1233 INTEGER :: egfp, egfq, maxl, ncop, ncoq, nset, &
1234 nsgf, pset, qset, sgfp, sgfq, unit_id
1235 INTEGER, DIMENSION(:), POINTER :: lmax, lmin, npgf_set, nsgf_set
1236 INTEGER, DIMENSION(:, :), POINTER :: first_sgf
1237 REAL(dp) :: r(3)
1238 REAL(dp), ALLOCATABLE, DIMENSION(:, :) :: metric, pq, work
1239 REAL(dp), DIMENSION(:, :), POINTER :: rpgf, sphi, zet
1240 TYPE(cp_libint_t) :: lib
1241 TYPE(gto_basis_set_type), POINTER :: ri_basis
1242 TYPE(mp_para_env_type), POINTER :: para_env
1243 TYPE(qs_kind_type), DIMENSION(:), POINTER :: qs_kind_set
1244
1245 NULLIFY (ri_basis, qs_kind_set, para_env, lmin, lmax, npgf_set, zet, rpgf, first_sgf)
1246 NULLIFY (sphi, nsgf_set)
1247
1248! Initialization
1249 CALL get_qs_env(qs_env, qs_kind_set=qs_kind_set, para_env=para_env)
1250 IF (ASSOCIATED(xas_tdp_env%ri_inv_ex)) THEN
1251 DEALLOCATE (xas_tdp_env%ri_inv_ex)
1252 END IF
1253
1254! Get the RI basis of interest and its quantum numbers
1255 CALL get_qs_kind(qs_kind_set(ex_kind), basis_set=ri_basis, basis_type="RI_XAS")
1256 CALL get_gto_basis_set(ri_basis, nsgf=nsgf, maxl=maxl, npgf=npgf_set, lmin=lmin, &
1257 lmax=lmax, zet=zet, pgf_radius=rpgf, first_sgf=first_sgf, &
1258 nsgf_set=nsgf_set, sphi=sphi, nset=nset)
1259 ALLOCATE (metric(nsgf, nsgf))
1260 metric = 0.0_dp
1261
1262 r = 0.0_dp
1263
1264 !init the libint 2-center object
1265 CALL cp_libint_init_2eri(lib, maxl)
1266 CALL cp_libint_set_contrdepth(lib, 1)
1267
1268 !make sure the truncted coulomb is initialized
1269 IF (xas_tdp_control%ri_m_potential%potential_type == do_potential_truncated) THEN
1270
1271 IF (2*maxl + 1 > get_lmax_init()) THEN
1272 IF (para_env%mepos == 0) THEN
1273 CALL open_file(unit_number=unit_id, file_name=xas_tdp_control%ri_m_potential%filename)
1274 END IF
1275 CALL init(2*maxl + 1, unit_id, para_env%mepos, para_env)
1276 IF (para_env%mepos == 0) THEN
1277 CALL close_file(unit_id)
1278 END IF
1279 END IF
1280 END IF
1281
1282! Compute the RI metric
1283 DO pset = 1, nset
1284 ncop = npgf_set(pset)*ncoset(lmax(pset))
1285 sgfp = first_sgf(1, pset)
1286 egfp = sgfp + nsgf_set(pset) - 1
1287
1288 DO qset = 1, nset
1289 ncoq = npgf_set(qset)*ncoset(lmax(qset))
1290 sgfq = first_sgf(1, qset)
1291 egfq = sgfq + nsgf_set(qset) - 1
1292
1293 ALLOCATE (work(ncop, ncoq))
1294 work = 0.0_dp
1295
1296 CALL eri_2center(work, lmin(pset), lmax(pset), npgf_set(pset), zet(:, pset), rpgf(:, pset), &
1297 r, lmin(qset), lmax(qset), npgf_set(qset), zet(:, qset), rpgf(:, qset), &
1298 r, 0.0_dp, lib, xas_tdp_control%ri_m_potential)
1299
1300 CALL ab_contract(metric(sgfp:egfp, sgfq:egfq), work, sphi(:, sgfp:), sphi(:, sgfq:), &
1301 ncop, ncoq, nsgf_set(pset), nsgf_set(qset))
1302
1303 DEALLOCATE (work)
1304 END DO !qset
1305 END DO !pset
1306
1307! Inverting (to M^-1)
1308 CALL invmat_symm(metric)
1309
1310 IF (.NOT. xas_tdp_control%do_ri_metric) THEN
1311
1312 !If no metric, then x_pot = ri_m_pot and (P|Q)^-1 = M^-1 (V-approximation)
1313 ALLOCATE (xas_tdp_env%ri_inv_ex(nsgf, nsgf))
1314 xas_tdp_env%ri_inv_ex(:, :) = metric(:, :)
1315 CALL cp_libint_cleanup_2eri(lib)
1316 RETURN
1317
1318 END IF
1319
1320 !make sure the truncted coulomb is initialized
1321 IF (xas_tdp_control%x_potential%potential_type == do_potential_truncated) THEN
1322
1323 IF (2*maxl + 1 > get_lmax_init()) THEN
1324 IF (para_env%mepos == 0) THEN
1325 CALL open_file(unit_number=unit_id, file_name=xas_tdp_control%x_potential%filename)
1326 END IF
1327 CALL init(2*maxl + 1, unit_id, para_env%mepos, para_env)
1328 IF (para_env%mepos == 0) THEN
1329 CALL close_file(unit_id)
1330 END IF
1331 END IF
1332 END IF
1333
1334! Compute the proper exchange 2-center
1335 ALLOCATE (pq(nsgf, nsgf))
1336 pq = 0.0_dp
1337
1338 DO pset = 1, nset
1339 ncop = npgf_set(pset)*ncoset(lmax(pset))
1340 sgfp = first_sgf(1, pset)
1341 egfp = sgfp + nsgf_set(pset) - 1
1342
1343 DO qset = 1, nset
1344 ncoq = npgf_set(qset)*ncoset(lmax(qset))
1345 sgfq = first_sgf(1, qset)
1346 egfq = sgfq + nsgf_set(qset) - 1
1347
1348 ALLOCATE (work(ncop, ncoq))
1349 work = 0.0_dp
1350
1351 CALL eri_2center(work, lmin(pset), lmax(pset), npgf_set(pset), zet(:, pset), rpgf(:, pset), &
1352 r, lmin(qset), lmax(qset), npgf_set(qset), zet(:, qset), rpgf(:, qset), &
1353 r, 0.0_dp, lib, xas_tdp_control%x_potential)
1354
1355 CALL ab_contract(pq(sgfp:egfp, sgfq:egfq), work, sphi(:, sgfp:), sphi(:, sgfq:), &
1356 ncop, ncoq, nsgf_set(pset), nsgf_set(qset))
1357
1358 DEALLOCATE (work)
1359 END DO !qset
1360 END DO !pset
1361
1362! Compute and store M^-1 (P|Q) M^-1
1363 ALLOCATE (xas_tdp_env%ri_inv_ex(nsgf, nsgf))
1364 xas_tdp_env%ri_inv_ex = 0.0_dp
1365
1366 CALL dgemm('N', 'N', nsgf, nsgf, nsgf, 1.0_dp, metric, nsgf, pq, nsgf, &
1367 0.0_dp, xas_tdp_env%ri_inv_ex, nsgf)
1368 CALL dgemm('N', 'N', nsgf, nsgf, nsgf, 1.0_dp, xas_tdp_env%ri_inv_ex, nsgf, metric, nsgf, &
1369 0.0_dp, pq, nsgf)
1370 xas_tdp_env%ri_inv_ex(:, :) = pq(:, :)
1371
1372 CALL cp_libint_cleanup_2eri(lib)
1373
1374 END SUBROUTINE compute_ri_exchange2_int
1375
1376! **************************************************************************************************
1377!> \brief Computes the two-center Coulomb integral needed for the RI in kernel calculation. Stores
1378!> the integrals (P|Q)^-1 in the xas_tdp_env as global (small) arrays. Does that for a given
1379!> excited kind
1380!> \param ex_kind ...
1381!> \param xas_tdp_env ...
1382!> \param xas_tdp_control ...
1383!> \param qs_env ...
1384! **************************************************************************************************
1385 SUBROUTINE compute_ri_coulomb2_int(ex_kind, xas_tdp_env, xas_tdp_control, qs_env)
1386
1387 INTEGER, INTENT(IN) :: ex_kind
1388 TYPE(xas_tdp_env_type), POINTER :: xas_tdp_env
1389 TYPE(xas_tdp_control_type), POINTER :: xas_tdp_control
1390 TYPE(qs_environment_type), POINTER :: qs_env
1391
1392 INTEGER :: nsgf
1393 TYPE(gto_basis_set_type), POINTER :: ri_basis
1394 TYPE(qs_kind_type), DIMENSION(:), POINTER :: qs_kind_set
1395
1396 NULLIFY (ri_basis, qs_kind_set)
1397
1398! Initialization
1399 CALL get_qs_env(qs_env, qs_kind_set=qs_kind_set)
1400 IF (ASSOCIATED(xas_tdp_env%ri_inv_coul)) THEN
1401 DEALLOCATE (xas_tdp_env%ri_inv_coul)
1402 END IF
1403
1404! Get the RI basis of interest and its quantum numbers
1405 CALL get_qs_kind(qs_kind_set(ex_kind), basis_set=ri_basis, basis_type="RI_XAS")
1406 CALL get_gto_basis_set(ri_basis, nsgf=nsgf)
1407 ALLOCATE (xas_tdp_env%ri_inv_coul(nsgf, nsgf))
1408 xas_tdp_env%ri_inv_coul = 0.0_dp
1409
1410 IF (.NOT. xas_tdp_control%is_periodic) THEN
1411 CALL int_operators_r12_ab_os(r12_operator=operator_coulomb, vab=xas_tdp_env%ri_inv_coul, &
1412 rab=(/0.0_dp, 0.0_dp, 0.0_dp/), fba=ri_basis, fbb=ri_basis, &
1413 calculate_forces=.false.)
1414 cpassert(ASSOCIATED(xas_tdp_control))
1415 ELSE
1416 CALL periodic_ri_coulomb2(xas_tdp_env%ri_inv_coul, ri_basis, qs_env)
1417 END IF
1418
1419! Inverting
1420 CALL invmat_symm(xas_tdp_env%ri_inv_coul)
1421
1422 END SUBROUTINE compute_ri_coulomb2_int
1423
1424! **************************************************************************************************
1425!> \brief Computes the two-center inverse coulomb integral in the case of PBCs
1426!> \param ri_coul2 ...
1427!> \param ri_basis ...
1428!> \param qs_env ...
1429! **************************************************************************************************
1430 SUBROUTINE periodic_ri_coulomb2(ri_coul2, ri_basis, qs_env)
1431
1432 REAL(dp), DIMENSION(:, :), INTENT(INOUT) :: ri_coul2
1433 TYPE(gto_basis_set_type), POINTER :: ri_basis
1434 TYPE(qs_environment_type), POINTER :: qs_env
1435
1436 INTEGER :: maxco, ncop, ncoq, nset, op, oq, ppgf, &
1437 pset, qpgf, qset, sgfp, sgfq
1438 INTEGER, DIMENSION(:), POINTER :: lmax, lmin, npgf, nsgf
1439 INTEGER, DIMENSION(:, :), POINTER :: first_sgf
1440 REAL(dp) :: r(3)
1441 REAL(dp), ALLOCATABLE, DIMENSION(:, :) :: hpq
1442 REAL(dp), DIMENSION(:, :), POINTER :: sphi, zet
1443 TYPE(cell_type), POINTER :: cell
1444 TYPE(cp_eri_mme_param) :: mme_param
1445 TYPE(mp_para_env_type), POINTER :: para_env
1446 TYPE(qs_kind_type), DIMENSION(:), POINTER :: qs_kind_set
1447
1448 NULLIFY (cell, qs_kind_set, lmin, lmax, nsgf, npgf, zet, sphi, first_sgf)
1449
1450 ! Use eri_mme for this. Don't want to annoy the user with a full input section just for this
1451 ! tiny bit => initialize our own eri_mme section with the defaults
1452
1453 CALL get_qs_env(qs_env, cell=cell, qs_kind_set=qs_kind_set, para_env=para_env)
1454
1455 CALL eri_mme_init(mme_param%par, n_minimax=20, cutoff=300.0_dp, do_calib_cutoff=.true., &
1456 cutoff_min=10.0_dp, cutoff_max=10000.0_dp, cutoff_eps=0.01_dp, &
1457 cutoff_delta=0.9_dp, sum_precision=1.0e-12_dp, debug=.false., &
1458 debug_delta=1.0e-6_dp, debug_nsum=1000000, unit_nr=0, print_calib=.false., &
1459 do_error_est=.false.)
1460 mme_param%do_calib = .true.
1461
1462 CALL cp_eri_mme_set_params(mme_param, cell, qs_kind_set, basis_type_1="RI_XAS", para_env=para_env)
1463
1464 CALL get_gto_basis_set(ri_basis, lmax=lmax, npgf=npgf, zet=zet, lmin=lmin, nset=nset, &
1465 nsgf_set=nsgf, sphi=sphi, first_sgf=first_sgf, maxco=maxco)
1466
1467 r = 0.0_dp
1468 ALLOCATE (hpq(nset*maxco, nset*maxco))
1469 hpq = 0.0_dp
1470
1471 DO pset = 1, nset
1472 ncop = npgf(pset)*ncoset(lmax(pset))
1473 sgfp = first_sgf(1, pset)
1474
1475 DO qset = 1, nset
1476 ncoq = npgf(qset)*ncoset(lmax(qset))
1477 sgfq = first_sgf(1, qset)
1478
1479 DO ppgf = 1, npgf(pset)
1480 op = (pset - 1)*maxco + (ppgf - 1)*ncoset(lmax(pset))
1481 DO qpgf = 1, npgf(qset)
1482 oq = (qset - 1)*maxco + (qpgf - 1)*ncoset(lmax(qset))
1483
1484 CALL eri_mme_2c_integrate(mme_param%par, lmin(pset), lmax(pset), lmin(qset), &
1485 lmax(qset), zet(ppgf, pset), zet(qpgf, qset), r, hpq, &
1486 op, oq)
1487
1488 END DO !qpgf
1489 END DO ! ppgf
1490
1491 !contraction into sgfs
1492 op = (pset - 1)*maxco + 1
1493 oq = (qset - 1)*maxco + 1
1494
1495 CALL ab_contract(ri_coul2(sgfp:sgfp + nsgf(pset) - 1, sgfq:sgfq + nsgf(qset) - 1), &
1496 hpq(op:op + ncop - 1, oq:oq + ncoq - 1), sphi(:, sgfp:), sphi(:, sgfq:), &
1497 ncop, ncoq, nsgf(pset), nsgf(qset))
1498
1499 END DO !qset
1500 END DO !pset
1501
1502 !celan-up
1503 CALL eri_mme_release(mme_param%par)
1504
1505 END SUBROUTINE periodic_ri_coulomb2
1506
1507END MODULE xas_tdp_integrals
imax
static int imax(int x, int y)
Returns the larger of two given integers (missing from the C standard)
Definition dbm_internal.h:15
dgemm
static void dgemm(const char transa, const char transb, const int m, const int n, const int k, const double alpha, const double *a, const int lda, const double *b, const int ldb, const double beta, double *c, const int ldc)
Convenient wrapper to hide Fortran nature of dgemm_, swapping a and b.
Definition grid_cpu_task_list.c:206
idx2
#define idx2(a, i, j)
Definition grid_dgemm_tensor_local.h:258
idx3
#define idx3(a, i, j, k)
Definition grid_dgemm_tensor_local.h:257
cp_eri_mme_interface::cp_eri_mme_set_params
Definition cp_eri_mme_interface.F:74
qs_neighbor_list_types::nl_sub_iterate
Definition qs_neighbor_list_types.F:96
ai_contraction_sphi
Contraction of integrals over primitive Cartesian Gaussians based on the contraction matrix sphi whic...
Definition ai_contraction_sphi.F:15
ai_contraction_sphi::abc_contract_xsmm
subroutine, public abc_contract_xsmm(abcint, sabc, sphi_a, sphi_b, sphi_c, ncoa, ncob, ncoc, nsgfa, nsgfb, nsgfc, cpp_buffer, ccp_buffer, prefac, pstfac)
3-center contraction routine from primitive cartesian Gaussians to spherical Gaussian functions; can ...
Definition ai_contraction_sphi.F:255
ai_contraction_sphi::ab_contract
subroutine, public ab_contract(abint, sab, sphi_a, sphi_b, ncoa, ncob, nsgfa, nsgfb)
contract overlap integrals (a,b) and transfer to spherical Gaussians
Definition ai_contraction_sphi.F:52
atomic_kind_types
Define the atomic kind types and their sub types.
Definition atomic_kind_types.F:23
basis_set_types
Definition basis_set_types.F:15
basis_set_types::get_gto_basis_set
subroutine, public get_gto_basis_set(gto_basis_set, name, aliases, norm_type, kind_radius, ncgf, nset, nsgf, cgf_symbol, sgf_symbol, norm_cgf, set_radius, lmax, lmin, lx, ly, lz, m, ncgf_set, npgf, nsgf_set, nshell, cphi, pgf_radius, sphi, scon, zet, first_cgf, first_sgf, l, last_cgf, last_sgf, n, gcc, maxco, maxl, maxpgf, maxsgf_set, maxshell, maxso, nco_sum, npgf_sum, nshell_sum, maxder, short_kind_radius, npgf_seg_sum)
...
Definition basis_set_types.F:624
cell_types
Handles all functions related to the CELL.
Definition cell_types.F:15
constants_operator
constants for the different operators of the 2c-integrals
Definition constants_operator.F:14
constants_operator::operator_coulomb
integer, parameter, public operator_coulomb
Definition constants_operator.F:22
cp_array_utils
various utilities that regard array of different kinds: output, allocation,... maybe it is not a good...
Definition cp_array_utils.F:18
cp_blacs_env
methods related to the blacs parallel environment
Definition cp_blacs_env.F:15
cp_dbcsr_api
Definition cp_dbcsr_api.F:8
cp_dbcsr_api::dbcsr_distribution_release
subroutine, public dbcsr_distribution_release(dist)
...
Definition cp_dbcsr_api.F:629
cp_dbcsr_api::dbcsr_distribution_get
subroutine, public dbcsr_distribution_get(dist, row_dist, col_dist, nrows, ncols, has_threads, group, mynode, numnodes, nprows, npcols, myprow, mypcol, pgrid, subgroups_defined, prow_group, pcol_group)
...
Definition cp_dbcsr_api.F:564
cp_dbcsr_operations
DBCSR operations in CP2K.
Definition cp_dbcsr_operations.F:18
cp_dbcsr_operations::cp_dbcsr_dist2d_to_dist
subroutine, public cp_dbcsr_dist2d_to_dist(dist2d, dist)
Creates a DBCSR distribution from a distribution_2d.
Definition cp_dbcsr_operations.F:419
cp_eri_mme_interface
Interface to Minimax-Ewald method for periodic ERI's to be used in CP2K.
Definition cp_eri_mme_interface.F:12
cp_files
Utility routines to open and close files. Tracking of preconnections.
Definition cp_files.F:16
cp_files::open_file
subroutine, public open_file(file_name, file_status, file_form, file_action, file_position, file_pad, unit_number, debug, skip_get_unit_number, file_access)
Opens the requested file using a free unit number.
Definition cp_files.F:308
cp_files::close_file
subroutine, public close_file(unit_number, file_status, keep_preconnection)
Close an open file given by its logical unit number. Optionally, keep the file and unit preconnected.
Definition cp_files.F:119
dbt_api
This is the start of a dbt_api, all publically needed functions are exported here....
Definition dbt_api.F:17
distribution_1d_types
stores a lists of integer that are local to a processor. The idea is that these integers represent ob...
Definition distribution_1d_types.F:24
distribution_2d_types
stores a mapping of 2D info (e.g. matrix) on a 2D processor distribution (i.e. blacs grid) where cpus...
Definition distribution_2d_types.F:15
distribution_2d_types::distribution_2d_create
subroutine, public distribution_2d_create(distribution_2d, blacs_env, local_rows_ptr, n_local_rows, local_cols_ptr, row_distribution_ptr, col_distribution_ptr, n_local_cols, n_row_distribution, n_col_distribution)
initializes the distribution_2d
Definition distribution_2d_types.F:102
eri_mme_integrate
Minimax-Ewald (MME) method for calculating 2-center and 3-center electron repulsion integrals (ERI) o...
Definition eri_mme_integrate.F:23
eri_mme_integrate::eri_mme_2c_integrate
subroutine, public eri_mme_2c_integrate(param, la_min, la_max, lb_min, lb_max, zeta, zetb, rab, hab, o1, o2, g_count, r_count, normalize, potential, pot_par)
Low-level integration routine for 2-center ERIs.
Definition eri_mme_integrate.F:72
eri_mme_types
Types and initialization / release routines for Minimax-Ewald method for electron repulsion integrals...
Definition eri_mme_types.F:16
eri_mme_types::eri_mme_release
subroutine, public eri_mme_release(param)
...
Definition eri_mme_types.F:471
eri_mme_types::eri_mme_init
subroutine, public eri_mme_init(param, n_minimax, cutoff, do_calib_cutoff, do_error_est, cutoff_min, cutoff_max, cutoff_eps, cutoff_delta, sum_precision, debug, debug_delta, debug_nsum, unit_nr, print_calib)
...
Definition eri_mme_types.F:116
gamma
Calculation of the incomplete Gamma function F_n(t) for multi-center integrals over Cartesian Gaussia...
Definition gamma.F:15
gamma::init_md_ftable
subroutine, public init_md_ftable(nmax)
Initialize a table of F_n(t) values in the range 0 <= t <= 12 with a stepsize of 0....
Definition gamma.F:540
generic_os_integrals
Calculation of contracted, spherical Gaussian integrals using the (OS) integral scheme....
Definition generic_os_integrals.F:18
generic_os_integrals::int_operators_r12_ab_os
subroutine, public int_operators_r12_ab_os(r12_operator, vab, dvab, rab, fba, fbb, omega, r_cutoff, calculate_forces)
Calcululates the two-center integrals of the type (a|O(r12)|b) using the OS scheme.
Definition generic_os_integrals.F:78
input_constants
collects all constants needed in input so that they can be used without circular dependencies
Definition input_constants.F:17
input_constants::do_potential_truncated
integer, parameter, public do_potential_truncated
Definition input_constants.F:807
input_constants::do_potential_id
integer, parameter, public do_potential_id
Definition input_constants.F:807
input_constants::do_potential_coulomb
integer, parameter, public do_potential_coulomb
Definition input_constants.F:807
input_constants::do_potential_short
integer, parameter, public do_potential_short
Definition input_constants.F:807
input_section_types
objects that represent the structure of input sections and the data contained in an input section
Definition input_section_types.F:15
input_section_types::section_vals_val_get
subroutine, public section_vals_val_get(section_vals, keyword_name, i_rep_section, i_rep_val, n_rep_val, val, l_val, i_val, r_val, c_val, l_vals, i_vals, r_vals, c_vals, explicit)
returns the requested value
Definition input_section_types.F:1047
kinds
Defines the basic variable types.
Definition kinds.F:23
kinds::dp
integer, parameter, public dp
Definition kinds.F:34
libint_2c_3c
2- and 3-center electron repulsion integral routines based on libint2 Currently available operators: ...
Definition libint_2c_3c.F:14
libint_2c_3c::eri_2center
subroutine, public eri_2center(int_ab, la_min, la_max, npgfa, zeta, rpgfa, ra, lb_min, lb_max, npgfb, zetb, rpgfb, rb, dab, lib, potential_parameter)
Computes the 2-center electron repulsion integrals (a|b) for a given set of cartesian gaussian orbita...
Definition libint_2c_3c.F:795
libint_2c_3c::eri_3center
subroutine, public eri_3center(int_abc, la_min, la_max, npgfa, zeta, rpgfa, ra, lb_min, lb_max, npgfb, zetb, rpgfb, rb, lc_min, lc_max, npgfc, zetc, rpgfc, rc, dab, dac, dbc, lib, potential_parameter, int_abc_ext)
Computes the 3-center electron repulsion integrals (ab|c) for a given set of cartesian gaussian orbit...
Definition libint_2c_3c.F:114
libint_2c_3c::cutoff_screen_factor
real(kind=dp), parameter, public cutoff_screen_factor
Definition libint_2c_3c.F:48
libint_wrapper
Interface to the Libint-Library or a c++ wrapper.
Definition libint_wrapper.F:15
libint_wrapper::cp_libint_init_2eri
subroutine, public cp_libint_init_2eri(lib, max_am)
Definition libint_wrapper.F:1164
libint_wrapper::cp_libint_init_3eri
subroutine, public cp_libint_init_3eri(lib, max_am)
Definition libint_wrapper.F:1128
libint_wrapper::cp_libint_cleanup_3eri
subroutine, public cp_libint_cleanup_3eri(lib)
Definition libint_wrapper.F:1196
libint_wrapper::cp_libint_set_contrdepth
subroutine, public cp_libint_set_contrdepth(lib, contrdepth)
Definition libint_wrapper.F:1098
libint_wrapper::cp_libint_cleanup_2eri
subroutine, public cp_libint_cleanup_2eri(lib)
Definition libint_wrapper.F:1226
mathlib
Collection of simple mathematical functions and subroutines.
Definition mathlib.F:15
mathlib::invmat_symm
subroutine, public invmat_symm(a, potrf, uplo)
returns inverse of real symmetric, positive definite matrix
Definition mathlib.F:580
message_passing
Interface to the message passing library MPI.
Definition message_passing.F:23
molecule_types
Define the data structure for the molecule information.
Definition molecule_types.F:16
orbital_pointers
Provides Cartesian and spherical orbital pointers and indices.
Definition orbital_pointers.F:15
orbital_pointers::ncoset
integer, dimension(:), allocatable, public ncoset
Definition orbital_pointers.F:42
particle_methods
Define methods related to particle_type.
Definition particle_methods.F:14
particle_methods::get_particle_set
subroutine, public get_particle_set(particle_set, qs_kind_set, first_sgf, last_sgf, nsgf, nmao, basis)
Get the components of a particle set.
Definition particle_methods.F:98
particle_types
Define the data structure for the particle information.
Definition particle_types.F:19
qs_environment_types
Definition qs_environment_types.F:14
qs_environment_types::get_qs_env
subroutine, public get_qs_env(qs_env, atomic_kind_set, qs_kind_set, cell, super_cell, cell_ref, use_ref_cell, kpoints, dft_control, mos, sab_orb, sab_all, qmmm, qmmm_periodic, sac_ae, sac_ppl, sac_lri, sap_ppnl, sab_vdw, sab_scp, sap_oce, sab_lrc, sab_se, sab_xtbe, sab_tbe, sab_core, sab_xb, sab_xtb_pp, sab_xtb_nonbond, sab_almo, sab_kp, sab_kp_nosym, particle_set, energy, force, matrix_h, matrix_h_im, matrix_ks, matrix_ks_im, matrix_vxc, run_rtp, rtp, matrix_h_kp, matrix_h_im_kp, matrix_ks_kp, matrix_ks_im_kp, matrix_vxc_kp, kinetic_kp, matrix_s_kp, matrix_w_kp, matrix_s_ri_aux_kp, matrix_s, matrix_s_ri_aux, matrix_w, matrix_p_mp2, matrix_p_mp2_admm, rho, rho_xc, pw_env, ewald_env, ewald_pw, active_space, mpools, input, para_env, blacs_env, scf_control, rel_control, kinetic, qs_charges, vppl, rho_core, rho_nlcc, rho_nlcc_g, ks_env, ks_qmmm_env, wf_history, scf_env, local_particles, local_molecules, distribution_2d, dbcsr_dist, molecule_kind_set, molecule_set, subsys, cp_subsys, oce, local_rho_set, rho_atom_set, task_list, task_list_soft, rho0_atom_set, rho0_mpole, rhoz_set, ecoul_1c, rho0_s_rs, rho0_s_gs, do_kpoints, has_unit_metric, requires_mo_derivs, mo_derivs, mo_loc_history, nkind, natom, nelectron_total, nelectron_spin, efield, neighbor_list_id, linres_control, xas_env, virial, cp_ddapc_env, cp_ddapc_ewald, outer_scf_history, outer_scf_ihistory, x_data, et_coupling, dftb_potential, results, se_taper, se_store_int_env, se_nddo_mpole, se_nonbond_env, admm_env, lri_env, lri_density, exstate_env, ec_env, harris_env, dispersion_env, gcp_env, vee, rho_external, external_vxc, mask, mp2_env, bs_env, kg_env, wanniercentres, atprop, ls_scf_env, do_transport, transport_env, v_hartree_rspace, s_mstruct_changed, rho_changed, potential_changed, forces_up_to_date, mscfg_env, almo_scf_env, gradient_history, variable_history, embed_pot, spin_embed_pot, polar_env, mos_last_converged, eeq, rhs)
Get the QUICKSTEP environment.
Definition qs_environment_types.F:514
qs_integral_utils
Some utility functions for the calculation of integrals.
Definition qs_integral_utils.F:14
qs_integral_utils::basis_set_list_setup
subroutine, public basis_set_list_setup(basis_set_list, basis_type, qs_kind_set)
Set up an easy accessible list of the basis sets for all kinds.
Definition qs_integral_utils.F:149
qs_kind_types
Define the quickstep kind type and their sub types.
Definition qs_kind_types.F:23
qs_kind_types::get_qs_kind
subroutine, public get_qs_kind(qs_kind, basis_set, basis_type, ncgf, nsgf, all_potential, tnadd_potential, gth_potential, sgp_potential, upf_potential, se_parameter, dftb_parameter, xtb_parameter, dftb3_param, zatom, zeff, elec_conf, mao, lmax_dftb, alpha_core_charge, ccore_charge, core_charge, core_charge_radius, paw_proj_set, paw_atom, hard_radius, hard0_radius, max_rad_local, covalent_radius, vdw_radius, gpw_type_forced, harmonics, max_iso_not0, max_s_harm, grid_atom, ngrid_ang, ngrid_rad, lmax_rho0, dft_plus_u_atom, l_of_dft_plus_u, n_of_dft_plus_u, u_minus_j, u_of_dft_plus_u, j_of_dft_plus_u, alpha_of_dft_plus_u, beta_of_dft_plus_u, j0_of_dft_plus_u, occupation_of_dft_plus_u, dispersion, bs_occupation, magnetization, no_optimize, addel, laddel, naddel, orbitals, max_scf, eps_scf, smear, u_ramping, u_minus_j_target, eps_u_ramping, init_u_ramping_each_scf, reltmat, ghost, floating, name, element_symbol, pao_basis_size, pao_model_file, pao_potentials, pao_descriptors, nelec)
Get attributes of an atomic kind.
Definition qs_kind_types.F:454
qs_neighbor_list_types
Define the neighbor list data types and the corresponding functionality.
Definition qs_neighbor_list_types.F:17
qs_neighbor_list_types::release_neighbor_list_sets
subroutine, public release_neighbor_list_sets(nlists)
releases an array of neighbor_list_sets
Definition qs_neighbor_list_types.F:1097
qs_neighbor_list_types::neighbor_list_iterator_create
subroutine, public neighbor_list_iterator_create(iterator_set, nl, search, nthread)
Neighbor list iterator functions.
Definition qs_neighbor_list_types.F:165
qs_neighbor_list_types::nl_set_sub_iterator
subroutine, public nl_set_sub_iterator(iterator_set, ikind, jkind, iatom, mepos)
...
Definition qs_neighbor_list_types.F:288
qs_neighbor_list_types::neighbor_list_iterator_release
subroutine, public neighbor_list_iterator_release(iterator_set)
...
Definition qs_neighbor_list_types.F:251
qs_neighbor_list_types::get_neighbor_list_set_p
subroutine, public get_neighbor_list_set_p(neighbor_list_sets, nlist, symmetric)
Return the components of the first neighbor list set.
Definition qs_neighbor_list_types.F:993
qs_neighbor_list_types::neighbor_list_iterate
integer function, public neighbor_list_iterate(iterator_set, mepos)
...
Definition qs_neighbor_list_types.F:351
qs_neighbor_list_types::get_iterator_info
subroutine, public get_iterator_info(iterator_set, mepos, ikind, jkind, nkind, ilist, nlist, inode, nnode, iatom, jatom, r, cell)
...
Definition qs_neighbor_list_types.F:549
qs_neighbor_lists
Generate the atomic neighbor lists.
Definition qs_neighbor_lists.F:19
qs_neighbor_lists::atom2d_cleanup
subroutine, public atom2d_cleanup(atom2d)
free the internals of atom2d
Definition qs_neighbor_lists.F:130
qs_neighbor_lists::pair_radius_setup
subroutine, public pair_radius_setup(present_a, present_b, radius_a, radius_b, pair_radius, prmin)
...
Definition qs_neighbor_lists.F:1626
qs_neighbor_lists::build_neighbor_lists
subroutine, public build_neighbor_lists(ab_list, particle_set, atom, cell, pair_radius, subcells, mic, symmetric, molecular, subset_of_mol, current_subset, operator_type, nlname, atomb_to_keep)
Build simple pair neighbor lists.
Definition qs_neighbor_lists.F:1028
qs_neighbor_lists::atom2d_build
subroutine, public atom2d_build(atom2d, distribution_1d, distribution_2d, atomic_kind_set, molecule_set, molecule_only, particle_set)
Build some distribution structure of atoms, refactored from build_qs_neighbor_lists.
Definition qs_neighbor_lists.F:172
qs_o3c_types
3-center overlap type integrals containers
Definition qs_o3c_types.F:12
qs_o3c_types::get_o3c_iterator_info
subroutine, public get_o3c_iterator_info(o3c_iterator, mepos, iatom, jatom, katom, ikind, jkind, kkind, rij, rik, cellj, cellk, integral, tvec, force_i, force_j, force_k)
...
Definition qs_o3c_types.F:418
qs_o3c_types::o3c_iterator_create
subroutine, public o3c_iterator_create(o3c, o3c_iterator, nthread)
...
Definition qs_o3c_types.F:357
qs_o3c_types::release_o3c_container
subroutine, public release_o3c_container(o3c_container)
...
Definition qs_o3c_types.F:225
qs_o3c_types::o3c_iterator_release
subroutine, public o3c_iterator_release(o3c_iterator)
...
Definition qs_o3c_types.F:384
qs_o3c_types::o3c_iterate
integer function, public o3c_iterate(o3c_iterator, mepos)
...
Definition qs_o3c_types.F:473
qs_o3c_types::init_o3c_container
subroutine, public init_o3c_container(o3c, nspin, basis_set_list_a, basis_set_list_b, basis_set_list_c, sab_nl, sac_nl, only_bc_same_center)
...
Definition qs_o3c_types.F:117
t_c_g0
This module computes the basic integrals for the truncated coulomb operator.
Definition t_c_g0.F:57
t_c_g0::init
subroutine, public init(nder, iunit, mepos, group)
...
Definition t_c_g0.F:1357
t_c_g0::get_lmax_init
integer function, public get_lmax_init()
Returns the value of nderiv_init so that one can check if opening the potential file is worhtwhile.
Definition t_c_g0.F:1464
xas_tdp_integrals
3-center integrals machinery for the XAS_TDP method
Definition xas_tdp_integrals.F:13
xas_tdp_integrals::build_xas_tdp_3c_nl
subroutine, public build_xas_tdp_3c_nl(ac_list, basis_a, basis_c, op_type, qs_env, excited_atoms, x_range, ext_dist2d)
Builds a neighbor lists set taylored for 3-center integral within XAS TDP, such that only excited ato...
Definition xas_tdp_integrals.F:751
xas_tdp_integrals::compute_ri_coulomb2_int
subroutine, public compute_ri_coulomb2_int(ex_kind, xas_tdp_env, xas_tdp_control, qs_env)
Computes the two-center Coulomb integral needed for the RI in kernel calculation. Stores the integral...
Definition xas_tdp_integrals.F:1386
xas_tdp_integrals::build_xas_tdp_ovlp_nl
subroutine, public build_xas_tdp_ovlp_nl(ab_list, basis_a, basis_b, qs_env, excited_atoms, ext_dist2d)
Builds a neighbor lists set for overlaping 2-center S_ab, where b is restricted on a a given list of ...
Definition xas_tdp_integrals.F:651
xas_tdp_integrals::fill_pqx_tensor
subroutine, public fill_pqx_tensor(pq_x, ab_nl, ac_nl, basis_set_list_a, basis_set_list_b, basis_set_list_c, potential_parameter, qs_env, only_bc_same_center, eps_screen)
Fills the given 3 dimensional (pq|X) tensor with integrals.
Definition xas_tdp_integrals.F:277
xas_tdp_integrals::compute_ri_3c_coulomb
subroutine, public compute_ri_3c_coulomb(xas_tdp_env, qs_env)
Computes the RI Coulomb 3-center integrals (ab|c), where c is from the RI_XAS basis and centered on t...
Definition xas_tdp_integrals.F:1132
xas_tdp_integrals::compute_ri_exchange2_int
subroutine, public compute_ri_exchange2_int(ex_kind, xas_tdp_env, xas_tdp_control, qs_env)
Computes the two-center Exchange integral needed for the RI in kernel calculation....
Definition xas_tdp_integrals.F:1227
xas_tdp_integrals::create_pqx_tensor
subroutine, public create_pqx_tensor(pq_x, ab_nl, ac_nl, matrix_dist, blk_size_1, blk_size_2, blk_size_3, only_bc_same_center)
Prepares a tensor to hold 3-center integrals (pq|X), where p,q are distributed according to the given...
Definition xas_tdp_integrals.F:128
xas_tdp_integrals::get_opt_3c_dist2d
subroutine, public get_opt_3c_dist2d(opt_3c_dist2d, ab_list, ac_list, basis_set_a, basis_set_b, basis_set_c, qs_env, only_bc_same_center)
Returns an optimized distribution_2d for the given neighbor lists based on an evaluation of the cost ...
Definition xas_tdp_integrals.F:881
xas_tdp_integrals::compute_ri_3c_exchange
subroutine, public compute_ri_3c_exchange(ex_atoms, xas_tdp_env, xas_tdp_control, qs_env)
Computes the RI exchange 3-center integrals (ab|c), where c is from the RI_XAS basis and centered on ...
Definition xas_tdp_integrals.F:1045
xas_tdp_types
Define XAS TDP control type and associated create, release, etc subroutines, as well as XAS TDP envir...
Definition xas_tdp_types.F:13
atomic_kind_types::atomic_kind_type
Provides all information about an atomic kind.
Definition atomic_kind_types.F:45
basis_set_types::gto_basis_set_p_type
Definition basis_set_types.F:94
basis_set_types::gto_basis_set_type
Definition basis_set_types.F:72
cell_types::cell_type
Type defining parameters related to the simulation cell.
Definition cell_types.F:55
cp_array_utils::cp_1d_i_p_type
represent a pointer to a 1d array
Definition cp_array_utils.F:221
cp_array_utils::cp_2d_r_p_type
represent a pointer to a 2d array
Definition cp_array_utils.F:109
cp_blacs_env::cp_blacs_env_type
represent a blacs multidimensional parallel environment (for the mpi corrispective see cp_paratypes/m...
Definition cp_blacs_env.F:53
cp_dbcsr_api::dbcsr_distribution_type
Definition cp_dbcsr_api.F:180
cp_eri_mme_interface::cp_eri_mme_param
Definition cp_eri_mme_interface.F:79
distribution_1d_types::distribution_1d_type
structure to store local (to a processor) ordered lists of integers.
Definition distribution_1d_types.F:62
distribution_2d_types::distribution_2d_type
distributes pairs on a 2d grid of processors
Definition distribution_2d_types.F:62
libint_2c_3c::libint_potential_type
Definition libint_2c_3c.F:66
libint_wrapper::cp_libint_t
Definition libint_wrapper.F:69
message_passing::mp_comm_type
Definition message_passing.F:189
message_passing::mp_para_env_type
stores all the informations relevant to an mpi environment
Definition message_passing.F:763
molecule_types::molecule_type
Definition molecule_types.F:110
particle_types::particle_type
Definition particle_types.F:35
qs_environment_types::qs_environment_type
Definition qs_environment_types.F:217
qs_kind_types::qs_kind_type
Provides all information about a quickstep kind.
Definition qs_kind_types.F:171
qs_neighbor_list_types::neighbor_list_iterator_p_type
Definition qs_neighbor_list_types.F:117
qs_neighbor_list_types::neighbor_list_set_p_type
Definition qs_neighbor_list_types.F:67
qs_neighbor_lists::local_atoms_type
Definition qs_neighbor_lists.F:103
qs_o3c_types::o3c_container_type
Definition qs_o3c_types.F:56
qs_o3c_types::o3c_iterator_type
Definition qs_o3c_types.F:75
xas_tdp_types::xas_tdp_control_type
Type containing control information for TDP XAS calculations.
Definition xas_tdp_types.F:102
xas_tdp_types::xas_tdp_env_type
Type containing informations such as inputs and results for TDP XAS calculations.
Definition xas_tdp_types.F:194