MPI_Graphdims_get function

Retrieves graph topology information associated with a communicator.

Syntax

int MPIAPI MPI_Graphdims_get(
        MPI_Comm comm,
  _Out_ int      *nnodes,
  _Out_ int      *nedges
);

Parameters

• comm
  Communicator for group with graph structure.

• nnodes [out]
  Number of nodes in graph.

• nedges [out]
  Number of edges in graph.

Return value

Returns MPI_SUCCESS on success. Otherwise, the return value is an error code.

In Fortran, the return value is stored in the IERROR parameter.

Fortran

    MPI_GRAPHDIMS_GET(COMM, NNODES, NEDGES, IERROR)
        INTEGER COMM, NNODES, NEDGES, IERROR

Requirements

Product	HPC Pack 2012 MS-MPI Redistributable Package, HPC Pack 2008 R2 MS-MPI Redistributable Package, HPC Pack 2008 MS-MPI Redistributable Package or HPC Pack 2008 Client Utilities
Header	Mpi.h; Mpif.h
Library	Msmpi.lib
DLL	Msmpi.dll

See also

MPI Process Topology Functions