openmpi/src/mca/coll/demo/coll_demo_reduce.c

/*
 * Copyright (c) 2004-2005 The Trustees of Indiana University.
 *                         All rights reserved.
 * Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
 *                         All rights reserved.
 * $COPYRIGHT$
 * 
 * Additional copyrights may follow
 * 
 * $HEADER$
 */

#include "ompi_config.h"
#include "coll_demo.h"

#include <stdio.h>

#include "mpi.h"
#include "include/constants.h"
#include "util/output.h"
#include "mca/coll/coll.h"
#include "mca/coll/base/base.h"
#include "coll_demo.h"


/*
 *	reduce_intra
 *
 *	Function:	- reduction using O(N) algorithm
 *	Accepts:	- same as MPI_Reduce()
 *	Returns:	- MPI_SUCCESS or error code
 */
int mca_coll_demo_reduce_intra(void *sbuf, void *rbuf, int count,
                               struct ompi_datatype_t *dtype, 
                               struct ompi_op_t *op,
                               int root, struct ompi_communicator_t *comm)
{
  ompi_output_verbose(10, mca_coll_base_output, "In demo reduce_intra");
  return comm->c_coll_basic_module->coll_reduce(sbuf, rbuf, count, dtype,
                                                op, root, comm);
}


/*
 *	reduce_log_inter
 *
 *	Function:	- reduction using O(N) algorithm
 *	Accepts:	- same as MPI_Reduce()
 *	Returns:	- MPI_SUCCESS or error code
 */
int mca_coll_demo_reduce_inter(void *sbuf, void *rbuf, int count,
                               struct ompi_datatype_t *dtype, 
                               struct ompi_op_t *op,
                               int root, struct ompi_communicator_t *comm)
{
  ompi_output_verbose(10, mca_coll_base_output, "In demo reduce_inter");
  return comm->c_coll_basic_module->coll_reduce(sbuf, rbuf, count, dtype,
                                                op, root, comm);
}