machine.F File Reference

#include "machine_cpuid.h"

Go to the source code of this file.

Data Types
interface	machine::m_cpuid_static
	Target architecture or instruction set extension according to compiler target flags. More...
interface	machine::m_omp_trace_issues
	Trace OpenMP constructs if ennvironment variable CP2K_OMP_TRACE=1. More...

Modules
module	machine
	Machine interface based on Fortran 2003 and POSIX.

Functions/Subroutines
subroutine, public	machine::m_flush (lunit)
	flushes units if the &GLOBAL flag is set accordingly
real(kind=dp) function, public	machine::m_walltime ()
	returns time from a real-time clock, protected against rolling early/easily
subroutine, public	machine::m_cpuinfo (model_name)
	reads /proc/cpuinfo if it exists (i.e. Linux) to return relevant info
pure integer function, public	machine::m_cpuid ()
	Target architecture or instruction set extension according to CPU-check at runtime.
pure character(len=default_string_length) function, public	machine::m_cpuid_name (cpuid)
	Determine name of target architecture for a given CPUID.
pure integer function, public	machine::m_cpuid_vlen (cpuid, typesize)
	Determine vector-length for a given CPUID.
real(kind=dp) function, public	machine::m_energy ()
	returns the energy used since some time in the past. The precise meaning depends on the infrastructure is available. In the cray_pm_energy case, this is the energy used by the node in kJ.
subroutine, public	machine::m_datum (cal_date)
	returns a datum in human readable format using a standard Fortran routine
subroutine, public	machine::m_abort ()
	Can be used to get a nice core.
integer function, public	machine::m_procrun (pid)
	Returns if a process is running on the local machine 1 if yes and 0 if not.
subroutine, public	machine::m_memory (mem)
	Returns the total amount of memory [bytes] in use, if known, zero otherwise.
subroutine, public	machine::m_memory_details (memtotal, memfree, buffers, cached, slab, sreclaimable, memlikelyfree)
	get more detailed memory info, all units are bytes. the only 'useful' option is MemLikelyFree which is an estimate of remaining memory assumed to give info like /proc/meminfo while MeMLikelyFree is the amount of memory we're likely to be able to allocate, but not necessarily in one chunk zero means not available...
subroutine, public	machine::m_hostnm (hname)
	...
subroutine, public	machine::m_getcwd (curdir)
	...
subroutine, public	machine::m_chdir (dir, ierror)
	...
subroutine, public	machine::m_getpid (pid)
	...
subroutine, public	machine::m_mov (source, target)
	...
subroutine, public	machine::m_getlog (user)
	...
subroutine, public	machine::m_omp_get_stacksize (omp_stacksize)
	Retrieve environment variable OMP_STACKSIZE.

Variables
integer, parameter, public	machine::default_output_unit = output_unit
integer, parameter, public	machine::default_input_unit = input_unit
integer, parameter, public	machine::machine_cpu_generic = CP_MACHINE_CPU_GENERIC
integer, parameter, public	machine::machine_x86_sse4 = CP_MACHINE_X86_SSE4
integer, parameter, public	machine::machine_x86_avx = CP_MACHINE_X86_AVX
integer, parameter, public	machine::machine_x86_avx2 = CP_MACHINE_X86_AVX2
integer, parameter, public	machine::machine_x86_avx512 = CP_MACHINE_X86_AVX512
integer, parameter, public	machine::machine_x86 = MACHINE_X86_AVX512
integer, parameter, public	machine::machine_arm_arch64 = CP_MACHINE_ARM_ARCH64
integer, parameter, public	machine::machine_arm_sve128 = CP_MACHINE_ARM_SVE128
integer, parameter, public	machine::machine_arm_sve256 = CP_MACHINE_ARM_SVE256
integer, parameter, public	machine::machine_arm_sve512 = CP_MACHINE_ARM_SVE512
integer, parameter, public	machine::machine_arm = MACHINE_ARM_SVE512
integer, parameter, public	machine::machine_cpu_unknown = CP_MACHINE_UNKNOWN
logical, save, public	machine::flush_should_flush = .TRUE.
integer(kind=int_8), save, public	machine::m_memory_max = 0