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OpenMP-Examples/sources/Example_affinity_query.1.f90

34 lines
918 B
Fortran

! @@name: affinity_query.1f
! @@type: F-free
! @@compilable: yes
! @@linkable: no
! @@expect: success
subroutine socket_init(socket_num)
use omp_lib
integer :: socket_num, n_procs
n_procs = omp_get_place_num_procs(socket_num)
!$omp parallel num_threads(n_procs) proc_bind(close)
print*,"Reporting in from socket num, thread num: ", &
socket_num,omp_get_thread_num()
!$omp end parallel
end subroutine
program numa_teams
use omp_lib
integer :: n_sockets, socket_num
call omp_set_nested(.true.) ! or export OMP_NESTED=true
call omp_set_max_active_levels(2) ! or export OMP_MAX_ACTIVE_LEVELS=2
n_sockets = omp_get_num_places()
!$omp parallel num_threads(n_sockets) private(socket_num) &
!$omp& proc_bind(spread)
socket_num = omp_get_place_num()
call socket_init(socket_num)
!$omp end parallel
end program