PetscShmCommGlobalToLocal#
Given a global rank returns the local rank in the shared memory communicator
Synopsis#
#include "petscsys.h"
PetscErrorCode PetscShmCommGlobalToLocal(PetscShmComm pshmcomm, PetscMPIInt grank, PetscMPIInt *lrank)
Input Parameters#
pshmcomm - the shared memory communicator object
grank - the global rank
Output Parameter#
lrank - the local rank, or
MPI_PROC_NULLif it does not exist
Developer Notes#
Assumes the pshmcomm->globranks[] is sorted
It may be better to rewrite this to map multiple global ranks to local in the same function call
See Also#
PetscShmCommGet(), PetscShmCommLocalToGlobal(), PetscShmCommGetMpiShmComm()
Level#
developer
Location#
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages