/* selector with default/naive Simgrid algorithms. These should not be trusted for performance evaluations */
-/* Copyright (c) 2009-2010, 2013-2017. The SimGrid Team.
- * All rights reserved. */
+/* Copyright (c) 2009-2019. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
-#include "colls_private.h"
-#include "smpi_process.hpp"
+#include "colls_private.hpp"
+#include "src/smpi/include/smpi_actor.hpp"
namespace simgrid{
namespace smpi{
int Coll_gather_default::gather(void *sendbuf, int sendcount, MPI_Datatype sendtype,
void *recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm)
{
- int system_tag = COLL_TAG_GATHER;
- MPI_Aint lb = 0;
- MPI_Aint recvext = 0;
-
- int rank = comm->rank();
- int size = comm->size();
- if(rank != root) {
- // Send buffer to root
- Request::send(sendbuf, sendcount, sendtype, root, system_tag, comm);
- } else {
- recvtype->extent(&lb, &recvext);
- // Local copy from root
- Datatype::copy(sendbuf, sendcount, sendtype, static_cast<char*>(recvbuf) + root * recvcount * recvext,
- recvcount, recvtype);
- // Receive buffers from senders
- MPI_Request *requests = xbt_new(MPI_Request, size - 1);
- int index = 0;
- for (int src = 0; src < size; src++) {
- if(src != root) {
- requests[index] = Request::irecv_init(static_cast<char*>(recvbuf) + src * recvcount * recvext, recvcount, recvtype,
- src, system_tag, comm);
- index++;
- }
- }
- // Wait for completion of irecv's.
- Request::startall(size - 1, requests);
- Request::waitall(size - 1, requests, MPI_STATUS_IGNORE);
- for (int src = 0; src < size-1; src++) {
- Request::unref(&requests[src]);
- }
- xbt_free(requests);
- }
- return MPI_SUCCESS;
+ MPI_Request request;
+ Colls::igather(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, root, comm, &request);
+ return Request::wait(&request, MPI_STATUS_IGNORE);
}
int Coll_reduce_scatter_default::reduce_scatter(void *sendbuf, void *recvbuf, int *recvcounts, MPI_Datatype datatype, MPI_Op op,
count += recvcounts[i];
}
void *tmpbuf = static_cast<void*>(smpi_get_tmp_sendbuffer(count*datatype->get_extent()));
- int ret = MPI_SUCCESS;
- ret = Coll_reduce_default::reduce(sendbuf, tmpbuf, count, datatype, op, 0, comm);
+ int ret = Coll_reduce_default::reduce(sendbuf, tmpbuf, count, datatype, op, 0, comm);
if(ret==MPI_SUCCESS)
ret = Colls::scatterv(tmpbuf, recvcounts, displs, datatype, recvbuf, recvcounts[rank], datatype, 0, comm);
xbt_free(displs);
int Coll_allgather_default::allgather(void *sendbuf, int sendcount, MPI_Datatype sendtype,
void *recvbuf,int recvcount, MPI_Datatype recvtype, MPI_Comm comm)
{
- int system_tag = COLL_TAG_ALLGATHER;
- MPI_Aint lb = 0;
- MPI_Aint recvext = 0;
- MPI_Request *requests;
-
- int rank = comm->rank();
- int size = comm->size();
- // FIXME: check for errors
- recvtype->extent(&lb, &recvext);
- // Local copy from self
- Datatype::copy(sendbuf, sendcount, sendtype, static_cast<char *>(recvbuf) + rank * recvcount * recvext, recvcount,
- recvtype);
- // Send/Recv buffers to/from others;
- requests = xbt_new(MPI_Request, 2 * (size - 1));
- int index = 0;
- for (int other = 0; other < size; other++) {
- if(other != rank) {
- requests[index] = Request::isend_init(sendbuf, sendcount, sendtype, other, system_tag,comm);
- index++;
- requests[index] = Request::irecv_init(static_cast<char *>(recvbuf) + other * recvcount * recvext, recvcount, recvtype,
- other, system_tag, comm);
- index++;
- }
- }
- // Wait for completion of all comms.
- Request::startall(2 * (size - 1), requests);
- Request::waitall(2 * (size - 1), requests, MPI_STATUS_IGNORE);
- for (int other = 0; other < 2*(size-1); other++) {
- Request::unref(&requests[other]);
- }
- xbt_free(requests);
- return MPI_SUCCESS;
+ MPI_Request request;
+ Colls::iallgather(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, comm, &request);
+ return Request::wait(&request, MPI_STATUS_IGNORE);
}
int Coll_allgatherv_default::allgatherv(void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf,
int *recvcounts, int *displs, MPI_Datatype recvtype, MPI_Comm comm)
{
- int system_tag = COLL_TAG_ALLGATHERV;
- MPI_Aint lb = 0;
- MPI_Aint recvext = 0;
-
- int rank = comm->rank();
- int size = comm->size();
- recvtype->extent(&lb, &recvext);
- // Local copy from self
- Datatype::copy(sendbuf, sendcount, sendtype,
- static_cast<char *>(recvbuf) + displs[rank] * recvext,recvcounts[rank], recvtype);
- // Send buffers to others;
- MPI_Request *requests = xbt_new(MPI_Request, 2 * (size - 1));
- int index = 0;
- for (int other = 0; other < size; other++) {
- if(other != rank) {
- requests[index] =
- Request::isend_init(sendbuf, sendcount, sendtype, other, system_tag, comm);
- index++;
- requests[index] = Request::irecv_init(static_cast<char *>(recvbuf) + displs[other] * recvext, recvcounts[other],
- recvtype, other, system_tag, comm);
- index++;
- }
- }
- // Wait for completion of all comms.
- Request::startall(2 * (size - 1), requests);
- Request::waitall(2 * (size - 1), requests, MPI_STATUS_IGNORE);
- for (int other = 0; other < 2*(size-1); other++) {
+ MPI_Request request;
+ Colls::iallgatherv(sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, comm, &request);
+ MPI_Request* requests = request->get_nbc_requests();
+ int count = request->get_nbc_requests_size();
+ Request::waitall(count, requests, MPI_STATUS_IGNORE);
+ for (int other = 0; other < count; other++) {
Request::unref(&requests[other]);
}
- xbt_free(requests);
+ delete[] requests;
+ Request::unref(&request);
return MPI_SUCCESS;
}
int Coll_scatter_default::scatter(void *sendbuf, int sendcount, MPI_Datatype sendtype,
void *recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm)
{
- int system_tag = COLL_TAG_SCATTER;
- MPI_Aint lb = 0;
- MPI_Aint sendext = 0;
- MPI_Request *requests;
-
- int rank = comm->rank();
- int size = comm->size();
- if(rank != root) {
- // Recv buffer from root
- Request::recv(recvbuf, recvcount, recvtype, root, system_tag, comm, MPI_STATUS_IGNORE);
- } else {
- sendtype->extent(&lb, &sendext);
- // Local copy from root
- if(recvbuf!=MPI_IN_PLACE){
- Datatype::copy(static_cast<char *>(sendbuf) + root * sendcount * sendext,
- sendcount, sendtype, recvbuf, recvcount, recvtype);
- }
- // Send buffers to receivers
- requests = xbt_new(MPI_Request, size - 1);
- int index = 0;
- for(int dst = 0; dst < size; dst++) {
- if(dst != root) {
- requests[index] = Request::isend_init(static_cast<char *>(sendbuf) + dst * sendcount * sendext, sendcount, sendtype,
- dst, system_tag, comm);
- index++;
- }
- }
- // Wait for completion of isend's.
- Request::startall(size - 1, requests);
- Request::waitall(size - 1, requests, MPI_STATUS_IGNORE);
- for (int dst = 0; dst < size-1; dst++) {
- Request::unref(&requests[dst]);
- }
- xbt_free(requests);
- }
- return MPI_SUCCESS;
+ MPI_Request request;
+ Colls::iscatter(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, root, comm, &request);
+ return Request::wait(&request, MPI_STATUS_IGNORE);
}
-
-
int Coll_reduce_default::reduce(void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, int root,
MPI_Comm comm)
{
- int system_tag = COLL_TAG_REDUCE;
+ const int system_tag = COLL_TAG_REDUCE;
MPI_Aint lb = 0;
MPI_Aint dataext = 0;
int rank = comm->rank();
int size = comm->size();
+ if (size <= 0)
+ return MPI_ERR_COMM;
//non commutative case, use a working algo from openmpi
if (op != MPI_OP_NULL && not op->is_commutative()) {
return Coll_reduce_ompi_basic_linear::reduce(sendtmpbuf, recvbuf, count, datatype, op, root, comm);
int index = 0;
for (int src = 0; src < size; src++) {
if (src != root) {
- if (not smpi_process()->replaying())
- tmpbufs[index] = xbt_malloc(count * dataext);
- else
- tmpbufs[index] = smpi_get_tmp_sendbuffer(count * dataext);
+ tmpbufs[index] = smpi_get_tmp_sendbuffer(count * dataext);
requests[index] =
Request::irecv_init(tmpbufs[index], count, datatype, src, system_tag, comm);
index++;
int Coll_allreduce_default::allreduce(void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm)
{
int ret;
- ret = Colls::reduce(sendbuf, recvbuf, count, datatype, op, 0, comm);
+ ret = Coll_reduce_default::reduce(sendbuf, recvbuf, count, datatype, op, 0, comm);
if(ret==MPI_SUCCESS)
- ret = Colls::bcast(recvbuf, count, datatype, 0, comm);
+ ret = Coll_bcast_default::bcast(recvbuf, count, datatype, 0, comm);
return ret;
}
return Coll_alltoall_ompi::alltoall(sbuf, scount, sdtype, rbuf, rcount, rdtype, comm);
}
-
-
int Coll_alltoallv_default::alltoallv(void *sendbuf, int *sendcounts, int *senddisps, MPI_Datatype sendtype,
void *recvbuf, int *recvcounts, int *recvdisps, MPI_Datatype recvtype, MPI_Comm comm)
{
- int system_tag = 889;
- int i;
- int count;
- MPI_Aint lb = 0;
- MPI_Aint sendext = 0;
- MPI_Aint recvext = 0;
- MPI_Request *requests;
-
- /* Initialize. */
- int rank = comm->rank();
- int size = comm->size();
- XBT_DEBUG("<%d> algorithm basic_alltoallv() called.", rank);
- sendtype->extent(&lb, &sendext);
- recvtype->extent(&lb, &recvext);
- /* Local copy from self */
- int err = Datatype::copy(static_cast<char *>(sendbuf) + senddisps[rank] * sendext, sendcounts[rank], sendtype,
- static_cast<char *>(recvbuf) + recvdisps[rank] * recvext, recvcounts[rank], recvtype);
- if (err == MPI_SUCCESS && size > 1) {
- /* Initiate all send/recv to/from others. */
- requests = xbt_new(MPI_Request, 2 * (size - 1));
- count = 0;
- /* Create all receives that will be posted first */
- for (i = 0; i < size; ++i) {
- if (i != rank && recvcounts[i] != 0) {
- requests[count] = Request::irecv_init(static_cast<char *>(recvbuf) + recvdisps[i] * recvext,
- recvcounts[i], recvtype, i, system_tag, comm);
- count++;
- }else{
- XBT_DEBUG("<%d> skip request creation [src = %d, recvcounts[src] = %d]", rank, i, recvcounts[i]);
- }
- }
- /* Now create all sends */
- for (i = 0; i < size; ++i) {
- if (i != rank && sendcounts[i] != 0) {
- requests[count] = Request::isend_init(static_cast<char *>(sendbuf) + senddisps[i] * sendext,
- sendcounts[i], sendtype, i, system_tag, comm);
- count++;
- }else{
- XBT_DEBUG("<%d> skip request creation [dst = %d, sendcounts[dst] = %d]", rank, i, sendcounts[i]);
- }
- }
- /* Wait for them all. */
- Request::startall(count, requests);
- XBT_DEBUG("<%d> wait for %d requests", rank, count);
- Request::waitall(count, requests, MPI_STATUS_IGNORE);
- for(i = 0; i < count; i++) {
- if(requests[i]!=MPI_REQUEST_NULL)
- Request::unref(&requests[i]);
- }
- xbt_free(requests);
- }
- return err;
+ MPI_Request request;
+ Colls::ialltoallv(sendbuf, sendcounts, senddisps, sendtype, recvbuf, recvcounts, recvdisps, recvtype, comm, &request);
+ return Request::wait(&request, MPI_STATUS_IGNORE);
}
}
