/* selector with default/naive Simgrid algorithms. These should not be trusted for performance evaluations */
-/* Copyright (c) 2009-2019. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2009-2020. 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. */
namespace simgrid{
namespace smpi{
-int Coll_bcast_default::bcast(void *buf, int count, MPI_Datatype datatype, int root, MPI_Comm comm)
+int bcast__default(void *buf, int count, MPI_Datatype datatype, int root, MPI_Comm comm)
{
- return Coll_bcast_binomial_tree::bcast(buf, count, datatype, root, comm);
+ return bcast__binomial_tree(buf, count, datatype, root, comm);
}
-int Coll_barrier_default::barrier(MPI_Comm comm)
+int barrier__default(MPI_Comm comm)
{
- return Coll_barrier_ompi_basic_linear::barrier(comm);
+ return barrier__ompi_basic_linear(comm);
}
-int Coll_gather_default::gather(void *sendbuf, int sendcount, MPI_Datatype sendtype,
+int gather__default(const void *sendbuf, int sendcount, MPI_Datatype sendtype,
void *recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm)
{
MPI_Request request;
- Colls::igather(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, root, 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 i = 0; i < count; i++) {
- if(requests[i]!=MPI_REQUEST_NULL)
- Request::unref(&requests[i]);
- }
- delete[] requests;
- Request::unref(&request);
- return MPI_SUCCESS;
+ colls::igather(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, root, comm, &request, 0);
+ 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,
- MPI_Comm comm)
+int reduce_scatter__default(const void *sendbuf, void *recvbuf, const int *recvcounts, MPI_Datatype datatype, MPI_Op op,
+ MPI_Comm comm)
{
int rank = comm->rank();
/* arbitrarily choose root as rank 0 */
int size = comm->size();
int count = 0;
- int *displs = xbt_new(int, size);
+ int* displs = new int[size];
for (int i = 0; i < size; i++) {
displs[i] = count;
count += recvcounts[i];
}
- void *tmpbuf = static_cast<void*>(smpi_get_tmp_sendbuffer(count*datatype->get_extent()));
+ unsigned char* tmpbuf = smpi_get_tmp_sendbuffer(count * datatype->get_extent());
- int ret = Coll_reduce_default::reduce(sendbuf, tmpbuf, count, datatype, op, 0, comm);
+ int ret = reduce__default(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);
+ ret = colls::scatterv(tmpbuf, recvcounts, displs, datatype, recvbuf, recvcounts[rank], datatype, 0, comm);
+ delete[] displs;
smpi_free_tmp_buffer(tmpbuf);
return ret;
}
-int Coll_allgather_default::allgather(void *sendbuf, int sendcount, MPI_Datatype sendtype,
- void *recvbuf,int recvcount, MPI_Datatype recvtype, MPI_Comm comm)
+int allgather__default(const void *sendbuf, int sendcount, MPI_Datatype sendtype,
+ void *recvbuf,int recvcount, MPI_Datatype recvtype, MPI_Comm comm)
{
MPI_Request request;
- Colls::iallgather(sendbuf, sendcount, sendtype, recvbuf, recvcount, 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]);
- }
- delete[] requests;
- Request::unref(&request);
- return MPI_SUCCESS;
+ 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 allgatherv__default(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf,
+ const int *recvcounts, const int *displs, MPI_Datatype recvtype, MPI_Comm comm)
{
MPI_Request request;
- Colls::iallgatherv(sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, comm, &request);
+ colls::iallgatherv(sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, comm, &request, 0);
MPI_Request* requests = request->get_nbc_requests();
int count = request->get_nbc_requests_size();
Request::waitall(count, requests, MPI_STATUS_IGNORE);
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 scatter__default(const void *sendbuf, int sendcount, MPI_Datatype sendtype,
+ void *recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm)
{
MPI_Request request;
- Colls::iscatter(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, root, 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 dst = 0; dst < count; dst++) {
- if(requests[dst]!=MPI_REQUEST_NULL)
- Request::unref(&requests[dst]);
- }
- delete[] requests;
- Request::unref(&request);
- return MPI_SUCCESS;
+ colls::iscatter(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, root, comm, &request, 0);
+ 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 reduce__default(const void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, int root,
+ MPI_Comm comm)
{
- const int system_tag = COLL_TAG_REDUCE;
- MPI_Aint lb = 0;
- MPI_Aint dataext = 0;
-
- char* sendtmpbuf = static_cast<char *>(sendbuf);
-
- 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);
- }
-
- if( sendbuf == MPI_IN_PLACE ) {
- sendtmpbuf = static_cast<char *>(smpi_get_tmp_sendbuffer(count*datatype->get_extent()));
- Datatype::copy(recvbuf, count, datatype,sendtmpbuf, count, datatype);
- }
-
- if(rank != root) {
- // Send buffer to root
- Request::send(sendtmpbuf, count, datatype, root, system_tag, comm);
- } else {
- datatype->extent(&lb, &dataext);
- // Local copy from root
- if (sendtmpbuf != nullptr && recvbuf != nullptr)
- Datatype::copy(sendtmpbuf, count, datatype, recvbuf, count, datatype);
- // Receive buffers from senders
- MPI_Request *requests = xbt_new(MPI_Request, size - 1);
- void **tmpbufs = xbt_new(void *, size - 1);
- int index = 0;
- for (int src = 0; src < size; src++) {
- if (src != root) {
- tmpbufs[index] = smpi_get_tmp_sendbuffer(count * dataext);
- requests[index] =
- Request::irecv_init(tmpbufs[index], count, datatype, src, system_tag, comm);
- index++;
- }
- }
- // Wait for completion of irecv's.
- Request::startall(size - 1, requests);
- for (int src = 0; src < size - 1; src++) {
- index = Request::waitany(size - 1, requests, MPI_STATUS_IGNORE);
- XBT_DEBUG("finished waiting any request with index %d", index);
- if(index == MPI_UNDEFINED) {
- break;
- }else{
- Request::unref(&requests[index]);
- }
- if(op) /* op can be MPI_OP_NULL that does nothing */
- if(op!=MPI_OP_NULL) op->apply( tmpbufs[index], recvbuf, &count, datatype);
- }
- for(index = 0; index < size - 1; index++) {
- smpi_free_tmp_buffer(tmpbufs[index]);
- }
- xbt_free(tmpbufs);
- xbt_free(requests);
-
+ if (op != MPI_OP_NULL && (datatype->flags() & DT_FLAG_DERIVED || not op->is_commutative())) {
+ return reduce__ompi_basic_linear(sendbuf, recvbuf, count, datatype, op, root, comm);
}
- if( sendbuf == MPI_IN_PLACE ) {
- smpi_free_tmp_buffer(sendtmpbuf);
- }
- return MPI_SUCCESS;
+ MPI_Request request;
+ colls::ireduce(sendbuf, recvbuf, count, datatype, op, root, comm, &request, 0);
+ return Request::wait(&request, MPI_STATUS_IGNORE);
}
-int Coll_allreduce_default::allreduce(void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm)
+int allreduce__default(const void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm)
{
+ //FIXME: have mpi_ireduce and iallreduce handle derived datatypes correctly
+ if(datatype->flags() & DT_FLAG_DERIVED)
+ return allreduce__ompi(sendbuf, recvbuf, count, datatype, op, comm);
int ret;
- ret = Coll_reduce_default::reduce(sendbuf, recvbuf, count, datatype, op, 0, comm);
+ ret = reduce__default(sendbuf, recvbuf, count, datatype, op, 0, comm);
if(ret==MPI_SUCCESS)
- ret = Coll_bcast_default::bcast(recvbuf, count, datatype, 0, comm);
+ ret = bcast__default(recvbuf, count, datatype, 0, comm);
return ret;
}
-int Coll_alltoall_default::alltoall( void *sbuf, int scount, MPI_Datatype sdtype, void* rbuf, int rcount, MPI_Datatype rdtype, MPI_Comm comm)
+int alltoall__default(const void *sbuf, int scount, MPI_Datatype sdtype, void* rbuf, int rcount, MPI_Datatype rdtype, MPI_Comm comm)
{
- return Coll_alltoall_ompi::alltoall(sbuf, scount, sdtype, rbuf, rcount, rdtype, comm);
+ return alltoall__ompi(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 alltoallv__default(const void *sendbuf, const int *sendcounts, const int *senddisps, MPI_Datatype sendtype,
+ void *recvbuf, const int *recvcounts, const int *recvdisps, MPI_Datatype recvtype, MPI_Comm comm)
{
MPI_Request request;
- int err = Colls::ialltoallv(sendbuf, sendcounts, senddisps, sendtype, recvbuf, recvcounts, recvdisps, recvtype, comm, &request);
- MPI_Request* requests = request->get_nbc_requests();
- int count = request->get_nbc_requests_size();
- XBT_DEBUG("<%d> wait for %d requests", comm->rank(), count);
- Request::waitall(count, requests, MPI_STATUS_IGNORE);
- for (int i = 0; i < count; i++) {
- if(requests[i]!=MPI_REQUEST_NULL)
- Request::unref(&requests[i]);
- }
- delete[] requests;
- Request::unref(&request);
- return err;
+ colls::ialltoallv(sendbuf, sendcounts, senddisps, sendtype, recvbuf, recvcounts, recvdisps, recvtype, comm, &request,
+ 0);
+ return Request::wait(&request, MPI_STATUS_IGNORE);
}
}
