6c5532072a
OMPI and a language agnostic part in OPAL. The convertor is completely moved into OPAL. This offers several benefits as described in RFC http://www.open-mpi.org/community/lists/devel/2009/07/6387.php namely: - Fewer basic types (int* and float* types, boolean and wchar - Fixing naming scheme to ompi-nomenclature. - Usability outside of the ompi-layer. - Due to the fixed nature of simple opal types, their information is completely known at compile time and therefore constified - With fewer datatypes (22), the actual sizes of bit-field types may be reduced from 64 to 32 bits, allowing reorganizing the opal_datatype structure, eliminating holes and keeping data required in convertor (upon send/recv) in one cacheline... This has implications to the convertor-datastructure and other parts of the code. - Several performance tests have been run, the netpipe latency does not change with this patch on Linux/x86-64 on the smoky cluster. - Extensive tests have been done to verify correctness (no new regressions) using: 1. mpi_test_suite on linux/x86-64 using clean ompi-trunk and ompi-ddt: a. running both trunk and ompi-ddt resulted in no differences (except for MPI_SHORT_INT and MPI_TYPE_MIX_LB_UB do now run correctly). b. with --enable-memchecker and running under valgrind (one buglet when run with static found in test-suite, commited) 2. ibm testsuite on linux/x86-64 using clean ompi-trunk and ompi-ddt: all passed (except for the dynamic/ tests failed!! as trunk/MTT) 3. compilation and usage of HDF5 tests on Jaguar using PGI and PathScale compilers. 4. compilation and usage on Scicortex. - Please note, that for the heterogeneous case, (-m32 compiled binaries/ompi), neither ompi-trunk, nor ompi-ddt branch would successfully launch. This commit was SVN r21641.
116 строки
3.4 KiB
C
116 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) 2004-2006 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) 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_hierarch.h"
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#include <stdio.h>
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#include "mpi.h"
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#include "ompi/constants.h"
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#include "ompi/communicator/communicator.h"
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#include "ompi/datatype/ompi_datatype.h"
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#include "ompi/mca/coll/coll.h"
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/*
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* reduce_intra
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*
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* Function: - reduction using two level hierarchy algorithm
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* Accepts: - same as MPI_Reduce()
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* Returns: - MPI_SUCCESS or error code
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*/
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int mca_coll_hierarch_allreduce_intra(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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struct ompi_communicator_t *llcomm=NULL;
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struct ompi_communicator_t *lcomm=NULL;
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mca_coll_hierarch_module_t *hierarch_module = (mca_coll_hierarch_module_t *) module;
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int rank;
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int lroot, llroot;
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ptrdiff_t extent, true_extent, lb, true_lb;
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char *tmpbuf=NULL, *tbuf=NULL;
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int ret=OMPI_SUCCESS;
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int root=0;
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rank = ompi_comm_rank ( comm );
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lcomm = hierarch_module->hier_lcomm;
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if ( mca_coll_hierarch_verbose_param ) {
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printf("%s:%d: executing hierarchical allreduce with cnt=%d \n",
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comm->c_name, rank, count );
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}
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llcomm = mca_coll_hierarch_get_llcomm ( root, hierarch_module, &llroot, &lroot);
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if ( MPI_COMM_NULL != lcomm ) {
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ompi_datatype_get_extent(dtype, &lb, &extent);
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ompi_datatype_get_true_extent(dtype, &true_lb, &true_extent);
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tbuf = (char*)malloc(true_extent + (count - 1) * extent);
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if (NULL == tbuf) {
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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tmpbuf = tbuf - lb;
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if ( MPI_IN_PLACE != sbuf ) {
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ret = lcomm->c_coll.coll_reduce (sbuf, tmpbuf, count, dtype,
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op, lroot, lcomm,
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lcomm->c_coll.coll_reduce_module);
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}
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else {
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ret = lcomm->c_coll.coll_reduce (rbuf, tmpbuf, count, dtype,
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op, lroot, lcomm,
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lcomm->c_coll.coll_reduce_module);
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}
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if ( OMPI_SUCCESS != ret ) {
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goto exit;
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}
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}
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if ( MPI_UNDEFINED != llroot ) {
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if ( MPI_COMM_NULL != lcomm ) {
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ret = llcomm->c_coll.coll_allreduce (tmpbuf, rbuf, count, dtype,
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op, llcomm,
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llcomm->c_coll.coll_allreduce_module);
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}
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else {
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ret = llcomm->c_coll.coll_allreduce (sbuf, rbuf, count, dtype,
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op, llcomm,
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llcomm->c_coll.coll_allreduce_module);
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}
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}
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if ( MPI_COMM_NULL != lcomm ) {
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ret = lcomm->c_coll.coll_bcast(rbuf, count, dtype, lroot, lcomm,
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lcomm->c_coll.coll_bcast_module );
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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 ret;
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}
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