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MPI_Graph_map function

  • Article

Maps process to graph topology information.

Syntax

int MPIAPI MPI_Graph_map(
        MPI_Comm               comm,
        int                    nnodes,
        _In_count_(nnodes) int *index,
  _In_  int                    *edges,
  _Out_ int                    *newrank
);

Parameters

  • comm
    Input communicator.

  • nnodes
    Number of graph nodes.

  • index
    Integer array specifying the graph structure.

  • edges [in]
    Integer array specifying the graph structure.

  • newrank [out]
    Reordered rank of the calling process; MPI_UNDEFINED if the calling process does not belong to 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_GRAPH_MAP(COMM, NNODES, INDEX, EDGES, NEWRANK, IERROR)
        INTEGER COMM, NNODES, INDEX(*), EDGES(*), NEWRANK, 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