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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 |