PETSc version 3.15.5
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_NULL if 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
Level
developer
Location
src/sys/utils/mpishm.c
Index of all Sys routines
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