PetscOmpCtrlCreate#
create a PETSc OpenMP controller, which manages PETSc’s interaction with third party libraries that use OpenMP
Synopsis#
#include "petscsys.h"
PetscErrorCode PetscOmpCtrlCreate(MPI_Comm petsc_comm, PetscInt nthreads, PetscOmpCtrl *pctrl)
Input Parameters#
petsc_comm - a communicator some PETSc object (for example, a matrix) lives in
nthreads - number of threads per MPI rank to spawn in a library using OpenMP. If nthreads = -1, let PETSc decide a suitable value
Output Parameter#
pctrl - a PETSc OpenMP controller
Developer Note#
Possibly use the variable PetscNumOMPThreads to determine the number for threads to use
See Also#
PetscOmpCtrlDestroy(), PetscOmpCtrlGetOmpComms(), PetscOmpCtrlBarrier(), PetscOmpCtrlOmpRegionOnMasterBegin(), PetscOmpCtrlOmpRegionOnMasterEnd(),
Level#
developer
Location#
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages