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

See Also#

PetscShmCommGet(), PetscShmCommLocalToGlobal(), PetscShmCommGetMpiShmComm()

Level#

developer

Location#

src/sys/utils/mpishm.c

Index of all Sys routines
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Index of all manual pages