mpi-op-create-function.md

title	TOCTitle	ms:assetid	ms:mtpsurl	ms:contentKeyID	ms.date	mtps_version	f1_keywords	dev_langs	description
MPI_Op_create function	MPI_Op_create function	5b636d07-7c9c-4164-8a08-d3a9e37cfe41	https://msdn.microsoft.com/en-us/library/Dn473438(v=VS.85)	59360974	03/28/2018	v=VS.85	mpi/MPI_OP_CREATE MPI_OP_CREATE mpif/MPI_Op_create	C++ C	Learn how to create a user-defined combination function handle with MPI_Op_create on Microsoft's official site. Perfect for HPC Pack users.

MPI_Op_create function

Creates a user-defined combination function handle.

Syntax

int MPIAPI MPI_Op_create(
  _In_  MPI_User_function *function,
        int               commute,
  _Out_ MPI_Op            *op
);

Parameters

• function [in]
  User defined function.

• commute
  True if commutative, false otherwise.

• op [out]
  Operation object.

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_OP_CREATE( USER_FN, COMMUTE, OP, IERROR)
        EXTERNAL USER_FN
        LOGICAL COMMUTE
        INTEGER 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	Mpif.h; Mpi.h
Library	Msmpi.lib
DLL	Msmpi.dll

See also

MPI Collective Functions

MPI_User_function