xt_mpi_internal.h

Go to the documentation of this file.

/*
 * Keywords:
 * Maintainer: Jörg Behrens <behrens@dkrz.de>
 *             Moritz Hanke <hanke@dkrz.de>
 *             Thomas Jahns <jahns@dkrz.de>
 * URL: https://doc.redmine.dkrz.de/yaxt/html/
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are  permitted provided that the following conditions are
 * met:
 *
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * Neither the name of the DKRZ GmbH nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef XT_MPI_INTERNAL_H
#define XT_MPI_INTERNAL_H

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdbool.h>
#include <mpi.h>

enum xt_mpi_tags {
  xt_mpi_tag_exchange_msg,
  xt_mpi_tag_xmap_dist_dir_src_send,
  xt_mpi_tag_xmap_dist_dir_dst_send,
  xt_mpi_tag_xmap_intersection_header_exchange,
  xt_mpi_tag_xmap_intersection_data_exchange,
  xt_mpi_num_tags,
};


extern int xt_mpi_comm_internal_keyval;

void
xt_mpi_init(void);
void
xt_mpi_finalize(void);

MPI_Comm
xt_mpi_comm_smart_dup(MPI_Comm comm, int *tag_offset);

void
xt_mpi_comm_smart_dedup(MPI_Comm *comm, int tag_offset);

bool
xt_mpi_test_some(int *restrict num_req,
                 MPI_Request req[],
                 int ops_completed[], MPI_Comm comm);

#endif

/*
 * Local Variables:
 * c-basic-offset: 2
 * coding: utf-8
 * indent-tabs-mode: nil
 * show-trailing-whitespace: t
 * require-trailing-newline: t
 * End:
 */