/* 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) 2009-2023. 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.hpp"
#include "src/smpi/include/smpi_actor.hpp"
-namespace simgrid{
-namespace smpi{
+namespace simgrid::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(const 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);
+ 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(const void *sendbuf, void *recvbuf, const 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();
int size = comm->size();
int count = 0;
int* displs = new int[size];
+ int regular=1;
for (int i = 0; i < size; i++) {
+ if(recvcounts[i]!=recvcounts[0]){
+ regular=0;
+ break;
+ }
displs[i] = count;
count += recvcounts[i];
}
+ if(not regular){
+ delete[] displs;
+ return reduce_scatter__mpich(sendbuf, recvbuf, recvcounts, datatype, op, comm);
+ }
+
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);
+ 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(const 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);
+ colls::iallgather(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, comm, &request);
return Request::wait(&request, MPI_STATUS_IGNORE);
}
-int Coll_allgatherv_default::allgatherv(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf,
- const int *recvcounts, const 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);
- 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;
+ colls::iallgatherv(sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, comm, &request, 0);
+ auto requests = request->get_nbc_requests();
+ Request::waitall(requests.size(), requests.data(), MPI_STATUS_IGNORE);
+ for(auto& req: requests)
+ Request::unref(&req);
Request::unref(&request);
return MPI_SUCCESS;
}
-int Coll_scatter_default::scatter(const 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);
+ colls::iscatter(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, root, comm, &request, 0);
return Request::wait(&request, MPI_STATUS_IGNORE);
}
-int Coll_reduce_default::reduce(const 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)
{
//non commutative case, use a working algo from openmpi
if (op != MPI_OP_NULL && (datatype->flags() & DT_FLAG_DERIVED || not op->is_commutative())) {
- return Coll_reduce_ompi_basic_linear::reduce(sendbuf, recvbuf, count, datatype, op, root, comm);
+ return reduce__ompi_basic_linear(sendbuf, recvbuf, count, datatype, op, root, comm);
}
MPI_Request request;
- Colls::ireduce(sendbuf, recvbuf, count, datatype, op, root, comm, &request);
+ colls::ireduce(sendbuf, recvbuf, count, datatype, op, root, comm, &request, 0);
return Request::wait(&request, MPI_STATUS_IGNORE);
}
-int Coll_allreduce_default::allreduce(const 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 Coll_allreduce_ompi::allreduce(sendbuf, recvbuf, count, datatype, op, comm);
+ 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(const 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(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)
+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;
- Colls::ialltoallv(sendbuf, sendcounts, senddisps, sendtype, recvbuf, recvcounts, recvdisps, recvtype, comm, &request);
+ colls::ialltoallv(sendbuf, sendcounts, senddisps, sendtype, recvbuf, recvcounts, recvdisps, recvtype, comm, &request,
+ 0);
return Request::wait(&request, MPI_STATUS_IGNORE);
}
-}
-}
-
+} // namespace simgrid::smpi