PetscOmpCtrlOmpRegionOnMasterBegin#
Mark the beginning of an OpenMP library call on master ranks
Synopsis#
#include "petscsys.h"
PetscErrorCode PetscOmpCtrlOmpRegionOnMasterBegin(PetscOmpCtrl ctrl)
Input Parameter#
ctrl - a PETSc OMP controller
Note#
Only master ranks can call this function. Call PetscOmpCtrlGetOmpComms() to know if this is a master rank.
This function changes CPU binding of master ranks and nthreads-var of OpenMP runtime
See Also#
PetscOmpCtrlOmpRegionOnMasterEnd(), PetscOmpCtrlCreate(), PetscOmpCtrlDestroy(), PetscOmpCtrlBarrier()
Level#
developer
Location#
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages