MPI_Reduce_local function

  • Article

Applies a reduction operator to local arguments.

Syntax

int MPIAPI MPI_Reduce_local(
  _In_ void         *inbuf,
       _Inout_ void *inoutbuf,
       int          count,
       MPI_Datatype datatype,
       MPI_Op       op
);

Parameters

  • inbuf [in]
    Address of the input buffer.

  • inoutbuf
    Address of input-output buffer.

  • count
    Number of elements in each buffer.

  • datatype
    Datatype of elements in the buffers.

  • op
    Reduction operation.

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_REDUCE_LOCAL(INBUF, INOUTBUF, COUNT, DATATYPE, OP, IERROR)
        <type> INBUF(*), INOUTBUF(*)
        INTEGER COUNT, DATATYPE, OP, 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 Collective Functions