244 строки
7.6 KiB
C
244 строки
7.6 KiB
C
/* -*- Mode: C; c-basic-offset:2 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2006 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) 2006 The Technical University of Chemnitz. All
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* rights reserved.
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* Copyright (c) 2013 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) 2014-2015 Research Organization for Information Science
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* and Technology (RIST). All rights reserved.
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* Copyright (c) 2015 Los Alamos National Security, LLC. All rights
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* reserved.
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*
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* Author(s): Torsten Hoefler <htor@cs.indiana.edu>
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*
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*/
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#include "nbc_internal.h"
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#ifdef NBC_CACHE_SCHEDULE
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/* tree comparison function for schedule cache */
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int NBC_Gather_args_compare(NBC_Gather_args *a, NBC_Gather_args *b, void *param) {
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if ((a->sendbuf == b->sendbuf) &&
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(a->sendcount == b->sendcount) &&
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(a->sendtype == b->sendtype) &&
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(a->recvbuf == b->recvbuf) &&
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(a->recvcount == b->recvcount) &&
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(a->recvtype == b->recvtype) &&
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(a->root == b->root)) {
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return 0;
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}
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if( a->sendbuf < b->sendbuf ) {
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return -1;
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}
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return 1;
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}
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#endif
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int ompi_coll_libnbc_igather(const void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf,
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int recvcount, MPI_Datatype recvtype, int root,
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struct ompi_communicator_t *comm, ompi_request_t ** request,
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struct mca_coll_base_module_2_1_0_t *module) {
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int rank, p, res;
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MPI_Aint rcvext = 0;
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NBC_Schedule *schedule;
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char *rbuf, inplace;
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NBC_Handle *handle;
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ompi_coll_libnbc_module_t *libnbc_module = (ompi_coll_libnbc_module_t*) module;
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NBC_IN_PLACE(sendbuf, recvbuf, inplace);
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rank = ompi_comm_rank (comm);
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p = ompi_comm_size (comm);
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if (rank == root) {
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res = MPI_Type_extent (recvtype, &rcvext);
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if (MPI_SUCCESS != res) {
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NBC_Error("MPI Error in MPI_Type_extent() (%i)", res);
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return res;
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}
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}
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if (inplace) {
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sendcount = recvcount;
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sendtype = recvtype;
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} else if (rank == root) {
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rbuf = ((char *)recvbuf) + (rank*recvcount*rcvext);
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/* if I am the root - just copy the message (only without MPI_IN_PLACE) */
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res = NBC_Copy(sendbuf, sendcount, sendtype, rbuf, recvcount, recvtype, comm);
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if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
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return res;
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}
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}
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#ifdef NBC_CACHE_SCHEDULE
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NBC_Gather_args *args, *found, search;
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/* search schedule in communicator specific tree */
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search.sendbuf = sendbuf;
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search.sendcount = sendcount;
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search.sendtype = sendtype;
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search.recvbuf = recvbuf;
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search.recvcount = recvcount;
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search.recvtype = recvtype;
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search.root = root;
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found = (NBC_Gather_args *) hb_tree_search ((hb_tree *) libnbc_module->NBC_Dict[NBC_GATHER],
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&search);
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if (NULL == found) {
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#endif
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schedule = OBJ_NEW(NBC_Schedule);
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if (OPAL_UNLIKELY(NULL == schedule)) {
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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/* send to root */
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if (rank != root) {
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/* send msg to root */
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res = NBC_Sched_send(sendbuf, false, sendcount, sendtype, root, schedule, false);
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if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
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OBJ_RELEASE(schedule);
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return res;
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}
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} else {
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for (int i = 0 ; i < p ; ++i) {
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rbuf = (char *)recvbuf + i * recvcount * rcvext;
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if (i != root) {
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/* root receives message to the right buffer */
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res = NBC_Sched_recv (rbuf, false, recvcount, recvtype, i, schedule, false);
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if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
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OBJ_RELEASE(schedule);
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return res;
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}
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}
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}
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}
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res = NBC_Sched_commit (schedule);
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if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
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OBJ_RELEASE(schedule);
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return res;
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}
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#ifdef NBC_CACHE_SCHEDULE
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/* save schedule to tree */
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args = (NBC_Gather_args *) malloc (sizeof (args));
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if (NULL != args) {
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args->sendbuf = sendbuf;
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args->sendcount = sendcount;
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args->sendtype = sendtype;
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args->recvbuf = recvbuf;
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args->recvcount = recvcount;
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args->recvtype = recvtype;
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args->root = root;
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args->schedule = schedule;
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res = hb_tree_insert ((hb_tree *) libnbc_module->NBC_Dict[NBC_GATHER], args, args, 0);
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if (0 == res) {
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OBJ_RETAIN(schedule);
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/* increase number of elements for A2A */
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if (++libnbc_module->NBC_Dict_size[NBC_GATHER] > NBC_SCHED_DICT_UPPER) {
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NBC_SchedCache_dictwipe ((hb_tree *) libnbc_module->NBC_Dict[NBC_GATHER],
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&libnbc_module->NBC_Dict_size[NBC_GATHER]);
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}
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} else {
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NBC_Error("error in dict_insert() (%i)", res);
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free (args);
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}
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}
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} else {
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/* found schedule */
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schedule = found->schedule;
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OBJ_RETAIN(schedule);
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}
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#endif
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res = NBC_Init_handle (comm, &handle, libnbc_module);
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if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
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OBJ_RELEASE(schedule);
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return res;
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}
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res = NBC_Start (handle, schedule);
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if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
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NBC_Return_handle (handle);
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return res;
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}
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*request = (ompi_request_t *) handle;
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return OMPI_SUCCESS;
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}
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int ompi_coll_libnbc_igather_inter (const void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf,
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int recvcount, MPI_Datatype recvtype, int root,
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struct ompi_communicator_t *comm, ompi_request_t ** request,
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struct mca_coll_base_module_2_1_0_t *module) {
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int res, rsize;
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MPI_Aint rcvext = 0;
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NBC_Schedule *schedule;
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char *rbuf;
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NBC_Handle *handle;
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ompi_coll_libnbc_module_t *libnbc_module = (ompi_coll_libnbc_module_t*) module;
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rsize = ompi_comm_remote_size (comm);
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if (root == MPI_ROOT) {
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res = MPI_Type_extent(recvtype, &rcvext);
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if (MPI_SUCCESS != res) {
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NBC_Error("MPI Error in MPI_Type_extent() (%i)", res);
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return res;
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}
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}
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schedule = OBJ_NEW(NBC_Schedule);
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if (OPAL_UNLIKELY(NULL == schedule)) {
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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/* send to root */
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if (root != MPI_ROOT && root != MPI_PROC_NULL) {
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/* send msg to root */
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res = NBC_Sched_send (sendbuf, false, sendcount, sendtype, root, schedule, false);
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if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
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OBJ_RELEASE(schedule);
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return res;
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}
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} else if (MPI_ROOT == root) {
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for (int i = 0 ; i < rsize ; ++i) {
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rbuf = ((char *)recvbuf) + (i * recvcount * rcvext);
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/* root receives message to the right buffer */
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res = NBC_Sched_recv (rbuf, false, recvcount, recvtype, i, schedule, false);
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if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
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OBJ_RELEASE(schedule);
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return res;
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}
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}
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}
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res = NBC_Sched_commit (schedule);
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if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
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OBJ_RELEASE(schedule);
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return res;
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}
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res = NBC_Init_handle (comm, &handle, libnbc_module);
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if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
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OBJ_RELEASE(schedule);
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return res;
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}
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res = NBC_Start (handle, schedule);
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if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
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NBC_Return_handle (handle);
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return res;
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}
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*request = (ompi_request_t *) handle;
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return OMPI_SUCCESS;
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}
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