PetscOmpCtrlGetOmpComms#
Get MPI communicators from a PETSc OMP controller
Synopsis#
#include "petscsys.h"
PetscErrorCode PetscOmpCtrlGetOmpComms(PetscOmpCtrl ctrl, MPI_Comm *omp_comm, MPI_Comm *omp_master_comm, PetscBool *is_omp_master)
Input Parameter#
ctrl - a PETSc OMP controller
Output Parameters#
omp_comm - a communicator that includes a master rank and slave ranks where master spawns threads
omp_master_comm - on master ranks, return a communicator that include master ranks of each omp_comm; on slave ranks,
MPI_COMM_NULL
will be return in reality.is_omp_master - true if the calling process is an OMP master rank.
Note#
Any output parameter can be NULL
. The parameter is just ignored.
See Also#
PetscOmpCtrlCreate()
, PetscOmpCtrlDestroy()
, PetscOmpCtrlBarrier()
, PetscOmpCtrlOmpRegionOnMasterBegin()
, PetscOmpCtrlOmpRegionOnMasterEnd()
,
Level#
developer
Location#
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages