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helpful information about the parallel environment

This commit is contained in:
Martin Diehl 2022-02-06 22:07:13 +01:00
parent 0cf0112029
commit a37438ca29
1 changed files with 15 additions and 5 deletions
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20
src/parallelization.f90
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@ -52,13 +52,13 @@ contains
!--------------------------------------------------------------------------------------------------
subroutine parallelization_init
integer(MPI_INTEGER_KIND) :: err_MPI, typeSize
integer(MPI_INTEGER_KIND) :: err_MPI, typeSize, version, subversion, devNull
character(len=4) :: rank_str
character(len=MPI_MAX_LIBRARY_VERSION_STRING) :: MPI_library_version
!$ integer :: got_env, threadLevel
!$ integer(pI32) :: OMP_NUM_THREADS
!$ character(len=6) NumThreadsString
PetscErrorCode :: err_PETSc
#ifdef _OPENMP
! If openMP is enabled, check if the MPI libary supports it and initialize accordingly.
@ -86,12 +86,22 @@ subroutine parallelization_init
if (err_MPI /= 0_MPI_INTEGER_KIND) &
error stop 'Could not determine worldrank'
if (worldrank == 0) print'(/,1x,a)', '<<<+- parallelization init -+>>>'
if (worldrank == 0) then
print'(/,1x,a)', '<<<+- parallelization init -+>>>'
call MPI_Get_library_version(MPI_library_version,devNull,err_MPI)
print'(/,1x,a)', trim(MPI_library_version)
call MPI_Get_version(version,subversion,err_MPI)
print'(1x,a,i0,a,i0)', 'MPI standard: ',version,'.',subversion
#ifdef _OPENMP
print'(1x,a,i0)', 'OpenMP version: ',openmp_version
#endif
end if
call MPI_Comm_size(MPI_COMM_WORLD,worldsize,err_MPI)
if (err_MPI /= 0_MPI_INTEGER_KIND) &
error stop 'Could not determine worldsize'
if (worldrank == 0) print'(/,1x,a,i3)', 'MPI processes: ',worldsize
if (worldrank == 0) print'(/,1x,a,i0)', 'MPI processes: ',worldsize
call MPI_Type_size(MPI_INTEGER,typeSize,err_MPI)
if (err_MPI /= 0_MPI_INTEGER_KIND) &
@ -128,7 +138,7 @@ subroutine parallelization_init
!$ OMP_NUM_THREADS = 4_pI32
!$ endif
!$ endif
!$ print'(1x,a,1x,i2)', 'OMP_NUM_THREADS:',OMP_NUM_THREADS
!$ print'(1x,a,i0)', 'OMP_NUM_THREADS: ',OMP_NUM_THREADS
!$ call omp_set_num_threads(OMP_NUM_THREADS)
end subroutine parallelization_init