351 строка
12 KiB
C
351 строка
12 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) 2014-2016 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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static inline int a2av_sched_linear(int rank, int p, NBC_Schedule *schedule,
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const void *sendbuf, const int *sendcounts,
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const int *sdispls, MPI_Aint sndext, MPI_Datatype sendtype,
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void *recvbuf, const int *recvcounts,
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const int *rdispls, MPI_Aint rcvext, MPI_Datatype recvtype);
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static inline int a2av_sched_pairwise(int rank, int p, NBC_Schedule *schedule,
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const void *sendbuf, const int *sendcounts, const int *sdispls,
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MPI_Aint sndext, MPI_Datatype sendtype,
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void *recvbuf, const int *recvcounts, const int *rdispls,
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MPI_Aint rcvext, MPI_Datatype recvtype);
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static inline int a2av_sched_inplace(int rank, int p, NBC_Schedule *schedule,
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void *buf, const int *counts, const int *displs,
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MPI_Aint ext, MPI_Datatype type, ptrdiff_t gap);
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/* an alltoallv schedule can not be cached easily because the contents
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* ot the recvcounts array may change, so a comparison of the address
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* would not be sufficient ... we simply do not cache it */
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/* simple linear Alltoallv */
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int ompi_coll_libnbc_ialltoallv(const void* sendbuf, const int *sendcounts, const int *sdispls,
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MPI_Datatype sendtype, void* recvbuf, const int *recvcounts, const int *rdispls,
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MPI_Datatype recvtype, 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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{
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int rank, p, res;
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MPI_Aint sndext, rcvext;
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NBC_Schedule *schedule;
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char *rbuf, *sbuf, inplace;
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ptrdiff_t gap, span;
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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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res = ompi_datatype_type_extent (recvtype, &rcvext);
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if (MPI_SUCCESS != res) {
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NBC_Error("MPI Error in ompi_datatype_type_extent() (%i)", res);
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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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return res;
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}
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/* copy data to receivbuffer */
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if (inplace) {
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int count = 0;
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for (int i = 0; i < p; i++) {
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if (recvcounts[i] > count) {
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count = recvcounts[i];
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}
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}
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span = opal_datatype_span(&recvtype->super, count, &gap);
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handle->tmpbuf = malloc(span);
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if (OPAL_UNLIKELY(NULL == handle->tmpbuf)) {
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NBC_Return_handle (handle);
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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sendcounts = recvcounts;
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sdispls = rdispls;
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} else {
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res = ompi_datatype_type_extent (sendtype, &sndext);
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if (MPI_SUCCESS != res) {
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NBC_Error("MPI Error in ompi_datatype_type_extent() (%i)", res);
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return res;
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}
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if (sendcounts[rank] != 0) {
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rbuf = (char *) recvbuf + rdispls[rank] * rcvext;
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sbuf = (char *) sendbuf + sdispls[rank] * sndext;
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res = NBC_Copy (sbuf, sendcounts[rank], sendtype, rbuf, recvcounts[rank], 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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}
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schedule = OBJ_NEW(NBC_Schedule);
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if (OPAL_UNLIKELY(NULL == schedule)) {
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NBC_Return_handle (handle);
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return OMPI_ERR_OUT_OF_RESOURCE;
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}
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if (inplace) {
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res = a2av_sched_inplace(rank, p, schedule, recvbuf, recvcounts,
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rdispls, rcvext, recvtype, gap);
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} else {
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res = a2av_sched_linear(rank, p, schedule,
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sendbuf, sendcounts, sdispls, sndext, sendtype,
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recvbuf, recvcounts, rdispls, rcvext, recvtype);
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}
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if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
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NBC_Return_handle (handle);
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OBJ_RELEASE(schedule);
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return res;
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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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NBC_Return_handle (handle);
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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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OBJ_RELEASE(schedule);
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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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/* simple linear Alltoallv */
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int ompi_coll_libnbc_ialltoallv_inter (const void* sendbuf, const int *sendcounts, const int *sdispls,
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MPI_Datatype sendtype, void* recvbuf, const int *recvcounts, const int *rdispls,
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MPI_Datatype recvtype, 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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{
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int res, rsize;
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MPI_Aint sndext, rcvext;
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NBC_Schedule *schedule;
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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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res = ompi_datatype_type_extent(sendtype, &sndext);
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if (MPI_SUCCESS != res) {
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NBC_Error("MPI Error in ompi_datatype_type_extent() (%i)", res);
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return res;
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}
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res = ompi_datatype_type_extent(recvtype, &rcvext);
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if (MPI_SUCCESS != res) {
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NBC_Error("MPI Error in ompi_datatype_type_extent() (%i)", res);
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return res;
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}
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rsize = ompi_comm_remote_size (comm);
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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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for (int i = 0; i < rsize; i++) {
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/* post all sends */
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if (sendcounts[i] != 0) {
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char *sbuf = (char *) sendbuf + sdispls[i] * sndext;
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res = NBC_Sched_send (sbuf, false, sendcounts[i], sendtype, 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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/* post all receives */
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if (recvcounts[i] != 0) {
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char *rbuf = (char *) recvbuf + rdispls[i] * rcvext;
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res = NBC_Sched_recv (rbuf, false, recvcounts[i], 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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OBJ_RELEASE(schedule);
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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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static inline int a2av_sched_linear(int rank, int p, NBC_Schedule *schedule,
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const void *sendbuf, const int *sendcounts, const int *sdispls,
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MPI_Aint sndext, MPI_Datatype sendtype,
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void *recvbuf, const int *recvcounts, const int *rdispls,
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MPI_Aint rcvext, MPI_Datatype recvtype) {
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int res;
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for (int i = 0 ; i < p ; ++i) {
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if (i == rank) {
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continue;
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}
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/* post send */
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if (sendcounts[i] != 0) {
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char *sbuf = ((char *) sendbuf) + (sdispls[i] * sndext);
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res = NBC_Sched_send(sbuf, false, sendcounts[i], sendtype, i, schedule, false);
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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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/* post receive */
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if (recvcounts[i] != 0) {
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char *rbuf = ((char *) recvbuf) + (rdispls[i] * rcvext);
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res = NBC_Sched_recv(rbuf, false, recvcounts[i], recvtype, i, schedule, false);
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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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}
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return OMPI_SUCCESS;
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}
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static inline int a2av_sched_pairwise(int rank, int p, NBC_Schedule *schedule,
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const void *sendbuf, const int *sendcounts, const int *sdispls,
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MPI_Aint sndext, MPI_Datatype sendtype,
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void *recvbuf, const int *recvcounts, const int *rdispls,
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MPI_Aint rcvext, MPI_Datatype recvtype) {
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int res;
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for (int i = 1 ; i < p ; ++i) {
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int sndpeer = (rank + i) % p;
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int rcvpeer = (rank + p - i) %p;
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/* post send */
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if (sendcounts[sndpeer] != 0) {
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char *sbuf = ((char *) sendbuf) + (sdispls[sndpeer] * sndext);
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res = NBC_Sched_send(sbuf, false, sendcounts[sndpeer], sendtype, sndpeer, schedule, false);
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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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/* post receive */
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if (recvcounts[rcvpeer] != 0) {
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char *rbuf = ((char *) recvbuf) + (rdispls[rcvpeer] * rcvext);
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res = NBC_Sched_recv(rbuf, false, recvcounts[rcvpeer], recvtype, rcvpeer, schedule, true);
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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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}
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return OMPI_SUCCESS;
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}
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static inline int a2av_sched_inplace(int rank, int p, NBC_Schedule *schedule,
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void *buf, const int *counts, const int *displs,
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MPI_Aint ext, MPI_Datatype type, ptrdiff_t gap) {
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int res;
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for (int i = 1; i < (p+1)/2; i++) {
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int speer = (rank + i) % p;
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int rpeer = (rank + p - i) % p;
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char *sbuf = (char *) buf + displs[speer] * ext;
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char *rbuf = (char *) buf + displs[rpeer] * ext;
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if (0 != counts[rpeer]) {
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res = NBC_Sched_copy (rbuf, false, counts[rpeer], type,
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(void *)(-gap), true, counts[rpeer], type,
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schedule, true);
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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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if (0 != counts[speer]) {
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res = NBC_Sched_send (sbuf, false , counts[speer], type, speer, schedule, false);
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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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if (0 != counts[rpeer]) {
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res = NBC_Sched_recv (rbuf, false , counts[rpeer], type, rpeer, schedule, true);
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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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if (0 != counts[rpeer]) {
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res = NBC_Sched_send ((void *)(-gap), true, counts[rpeer], type, rpeer, schedule, false);
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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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if (0 != counts[speer]) {
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res = NBC_Sched_recv (sbuf, false, counts[speer], type, speer, schedule, true);
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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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}
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if (0 == (p%2)) {
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int peer = (rank + p/2) % p;
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char *tbuf = (char *) buf + displs[peer] * ext;
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res = NBC_Sched_copy (tbuf, false, counts[peer], type,
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(void *)(-gap), true, counts[peer], type,
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schedule, true);
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if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
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return res;
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}
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res = NBC_Sched_send ((void *)(-gap), true , counts[peer], type, peer, schedule, false);
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if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
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return res;
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}
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res = NBC_Sched_recv (tbuf, false , counts[peer], type, peer, schedule, true);
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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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return OMPI_SUCCESS;
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}
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