petsc-3.13.6 2020-09-29
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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

Notes

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()

Level

developer

Location

src/sys/utils/mpishm.c
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages