preconditioner_solvers Module Reference

solves the preconditioner, contains to utility function for fm<->dbcsr transfers, should be moved soon More...

Functions/Subroutines
subroutine, public	solve_preconditioner (my_solver_type, preconditioner_env, matrix_s, matrix_h)
	...
subroutine, public	transfer_fm_to_dbcsr (fm_matrix, dbcsr_matrix, template_mat)
	transfers a full matrix to a dbcsr
subroutine, public	transfer_dbcsr_to_fm (dbcsr_matrix, fm_matrix, para_env, context)
	transfers a dbcsr to a full matrix

Detailed Description

solves the preconditioner, contains to utility function for fm<->dbcsr transfers, should be moved soon

History

• [UB] 2009-05-13 Adding stable approximate inverse (full and sparse)

Author

Joost VandeVondele (09.2002)

Function/Subroutine Documentation

solve_preconditioner()

subroutine, public preconditioner_solvers::solve_preconditioner	(	integer	my_solver_type,
		type(preconditioner_type)	preconditioner_env,
		type(dbcsr_type), optional, pointer	matrix_s,
		type(dbcsr_type), pointer	matrix_h
	)

...

Parameters

my_solver_type	...
preconditioner_env	...
matrix_s	...
matrix_h	...

Definition at line 66 of file preconditioner_solvers.F.

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transfer_fm_to_dbcsr()

subroutine, public preconditioner_solvers::transfer_fm_to_dbcsr	(	type(cp_fm_type), pointer	fm_matrix,
		type(dbcsr_type), pointer	dbcsr_matrix,
		type(dbcsr_type), pointer	template_mat
	)

transfers a full matrix to a dbcsr

Parameters

fm_matrix	a full matrix gets deallocated in the end
dbcsr_matrix	a dbcsr matrix, gets create from a template
template_mat	the template which is used for the structure

Definition at line 303 of file preconditioner_solvers.F.

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transfer_dbcsr_to_fm()

subroutine, public preconditioner_solvers::transfer_dbcsr_to_fm	(	type(dbcsr_type), pointer	dbcsr_matrix,
		type(cp_fm_type), pointer	fm_matrix,
		type(mp_para_env_type), pointer	para_env,
		type(cp_blacs_env_type), pointer	context
	)

transfers a dbcsr to a full matrix

Parameters

dbcsr_matrix	a dbcsr matrix, gets deallocated at the end
fm_matrix	a full matrix gets created if not yet done
para_env	the para_env
context	the blacs context

Definition at line 337 of file preconditioner_solvers.F.

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