0af7ac53f2
* add "register" function to mca_base_component_t
* converted coll:basic and paffinity:linux and paffinity:solaris to
use this function
* we'll convert the rest over time (I'll file a ticket once all
this is committed)
* add 32 bytes of "reserved" space to the end of mca_base_component_t
and mca_base_component_data_2_0_0_t to make future upgrades
[slightly] easier
* new mca_base_component_t size: 196 bytes
* new mca_base_component_data_2_0_0_t size: 36 bytes
* MCA base version bumped to v2.0
* '''We now refuse to load components that are not MCA v2.0.x'''
* all MCA frameworks versions bumped to v2.0
* be a little more explicit about version numbers in the MCA base
* add big comment in mca.h about versioning philosophy
This commit was SVN r19073.
The following Trac tickets were found above:
Ticket 1392 --> https://svn.open-mpi.org/trac/ompi/ticket/1392
111 строки
3.4 KiB
C
111 строки
3.4 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2006-2007 University of Houston. All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "ompi_config.h"
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#include "coll_inter.h"
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#include "mpi.h"
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#include "ompi/constants.h"
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#include "ompi/datatype/datatype.h"
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#include "ompi/op/op.h"
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#include "ompi/mca/coll/coll.h"
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#include "ompi/mca/coll/base/coll_tags.h"
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#include "ompi/mca/pml/pml.h"
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/*
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* allreduce_inter
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*
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* Function: - allreduce using other MPI collectives
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* Accepts: - same as MPI_Allreduce()
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* Returns: - MPI_SUCCESS or error code
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*/
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int
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mca_coll_inter_allreduce_inter(void *sbuf, void *rbuf, int count,
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struct ompi_datatype_t *dtype,
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struct ompi_op_t *op,
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struct ompi_communicator_t *comm,
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mca_coll_base_module_t *module)
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{
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int err, rank, root = 0, rsize;
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ptrdiff_t lb, extent;
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char *tmpbuf = NULL, *pml_buffer = NULL;
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ompi_request_t *req[2];
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rank = ompi_comm_rank(comm);
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rsize = ompi_comm_remote_size(comm);
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/* Perform the reduction locally */
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err = ompi_ddt_get_extent(dtype, &lb, &extent);
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if (OMPI_SUCCESS != err) {
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return OMPI_ERROR;
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}
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tmpbuf = (char *) malloc(count * extent);
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if (NULL == tmpbuf) {
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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pml_buffer = tmpbuf - lb;
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err = comm->c_local_comm->c_coll.coll_reduce(sbuf, pml_buffer, count,
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dtype, op, root,
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comm->c_local_comm,
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comm->c_local_comm->c_coll.coll_reduce_module);
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if (OMPI_SUCCESS != err) {
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goto exit;
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}
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if (rank == root) {
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/* Do a send-recv between the two root procs. to avoid deadlock */
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err = MCA_PML_CALL(irecv(rbuf, count, dtype, 0,
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MCA_COLL_BASE_TAG_ALLREDUCE, comm,
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&(req[0])));
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if (OMPI_SUCCESS != err) {
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goto exit;
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}
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err = MCA_PML_CALL(isend(pml_buffer, count, dtype, 0,
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MCA_COLL_BASE_TAG_ALLREDUCE,
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MCA_PML_BASE_SEND_STANDARD,
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comm, &(req[1])));
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if (OMPI_SUCCESS != err) {
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goto exit;
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}
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err = ompi_request_wait_all(2, req, MPI_STATUSES_IGNORE);
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if (OMPI_SUCCESS != err) {
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goto exit;
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}
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}
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/* bcast the message to all the local processes */
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err = comm->c_local_comm->c_coll.coll_bcast(rbuf, count, dtype,
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root, comm->c_local_comm,
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comm->c_local_comm->c_coll.coll_bcast_module);
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if (OMPI_SUCCESS != err) {
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goto exit;
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}
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exit:
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if (NULL != tmpbuf) {
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free(tmpbuf);
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}
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return err;
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}
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