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MPI_Graph_neighbors_count function

  • Article

Returns the number of neighbors of a node associated with a graph topology.

Syntax

int MPIAPI MPI_Graph_neighbors_count(
        MPI_Comm comm,
        int      rank,
  _Out_ int      *nneighbors
);

Parameters

  • comm
    Communicator with graph topology.

  • rank
    Rank of process in group of comm.

  • nneighbors [out]
    Number of neighbors of specified process.

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_GRAPH_NEIGHBORS_COUNT(COMM, RANK, NNEIGHBORS, IERROR)
        INTEGER COMM, RANK, NNEIGHBORS, 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