petsc-3.14.6 2021-03-30
PetscShmCommGet
Given a PETSc communicator returns a communicator of all ranks that share a common memory
Synopsis
#include "petscsys.h"
PetscErrorCode PetscShmCommGet(MPI_Comm globcomm,PetscShmComm *pshmcomm)
Collective.
Input Parameter
Output Parameter
| pshmcomm | - the PETSc shared memory communicator object
|
Notes
This should be called only with an PetscCommDuplicate() communictor
When used with MPICH, MPICH must be configured with --download-mpich-device=ch3:nemesis
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