petsc-3.13.6 2020-09-29
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PetscOmpCtrlCreate

create a PETSc OpenMP controller, which manages PETSc's interaction with third party libraries using OpenMP

Synopsis

#include "petscsys.h"  
PetscErrorCode PetscOmpCtrlCreate(MPI_Comm petsc_comm,PetscInt nthreads,PetscOmpCtrl *pctrl)

Input Parameter

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

TODO: Possibly use the variable PetscNumOMPThreads to determine the number for threads to use

See Also

PetscOmpCtrlDestroy()

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