-void smpi_mpi_bcast(void *buf, int count, MPI_Datatype datatype, int root, MPI_Comm comm)
-{
- smpi_coll_tuned_bcast_binomial_tree(buf, count, datatype, root, comm);
-}
-
-void smpi_mpi_barrier(MPI_Comm comm)
-{
- smpi_coll_tuned_barrier_ompi_basic_linear(comm);
-}
-
-void smpi_mpi_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);
- }
-}
-
-void smpi_mpi_reduce_scatter(void *sendbuf, void *recvbuf, 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);
- 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()));
-
- mpi_coll_reduce_fun(sendbuf, tmpbuf, count, datatype, op, 0, comm);
- smpi_mpi_scatterv(tmpbuf, recvcounts, displs, datatype, recvbuf, recvcounts[rank], datatype, 0, comm);
- xbt_free(displs);
- smpi_free_tmp_buffer(tmpbuf);
-}
-
-void smpi_mpi_gatherv(void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, int *recvcounts, int *displs,
- MPI_Datatype recvtype, int root, MPI_Comm comm)
-{
- int system_tag = COLL_TAG_GATHERV;
- 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) + displs[root] * recvext,
- recvcounts[root], 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) + displs[src] * recvext,
- recvcounts[src], 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);
- }
-}
-
-void smpi_mpi_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);
-}
-
-void smpi_mpi_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++) {
- Request::unref(&requests[other]);
- }
- xbt_free(requests);
-}
-
-void smpi_mpi_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);
- }
-}
-
-void smpi_mpi_scatterv(void *sendbuf, int *sendcounts, int *displs, MPI_Datatype sendtype, void *recvbuf, int recvcount,
- MPI_Datatype recvtype, int root, MPI_Comm comm)
-{
- int system_tag = COLL_TAG_SCATTERV;
- MPI_Aint lb = 0;
- MPI_Aint sendext = 0;
-
- 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) + displs[root] * sendext, sendcounts[root],
- sendtype, recvbuf, recvcount, recvtype);
- }
- // Send buffers to receivers
- MPI_Request *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) + displs[dst] * sendext, sendcounts[dst],
- 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);
- }
-}
-
-void smpi_mpi_reduce(void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, int root,
- MPI_Comm comm)
-{
- 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();
- //non commutative case, use a working algo from openmpi
- if(op != MPI_OP_NULL && !op->is_commutative()){
- smpi_coll_tuned_reduce_ompi_basic_linear(sendtmpbuf, recvbuf, count, datatype, op, root, comm);
- return;
- }
-
- 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) {
- if (!smpi_process_get_replaying())
- tmpbufs[index] = xbt_malloc(count * dataext);
- else
- 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 != MPI_OP_NULL) /* op can be MPI_OP_NULL that does nothing */
- 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( sendbuf == MPI_IN_PLACE ) {
- smpi_free_tmp_buffer(sendtmpbuf);
- }
-}
-
-void smpi_mpi_allreduce(void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm)
-{
- smpi_mpi_reduce(sendbuf, recvbuf, count, datatype, op, 0, comm);
- smpi_mpi_bcast(recvbuf, count, datatype, 0, comm);
-}
-
-void smpi_mpi_scan(void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm)
-{
- int system_tag = -888;
- MPI_Aint lb = 0;
- MPI_Aint dataext = 0;
-
- int rank = comm->rank();
- int size = comm->size();
-
- datatype->extent(&lb, &dataext);
-
- // Local copy from self
- Datatype::copy(sendbuf, count, datatype, recvbuf, count, datatype);
-
- // Send/Recv buffers to/from others;
- MPI_Request *requests = xbt_new(MPI_Request, size - 1);
- void **tmpbufs = xbt_new(void *, rank);
- int index = 0;
- for (int other = 0; other < rank; other++) {
- tmpbufs[index] = smpi_get_tmp_sendbuffer(count * dataext);
- requests[index] = Request::irecv_init(tmpbufs[index], count, datatype, other, system_tag, comm);
- index++;
- }
- for (int other = rank + 1; other < size; other++) {
- requests[index] = Request::isend_init(sendbuf, count, datatype, other, system_tag, comm);
- index++;
- }
- // Wait for completion of all comms.
- Request::startall(size - 1, requests);
-
- if(op != MPI_OP_NULL && op->is_commutative()){
- for (int other = 0; other < size - 1; other++) {
- index = Request::waitany(size - 1, requests, MPI_STATUS_IGNORE);
- if(index == MPI_UNDEFINED) {
- break;
- }
- if (index < rank)
- // #Request is below rank: it's a irecv.
- op->apply(tmpbufs[index], recvbuf, &count, datatype);
- }
- }else{
- //non commutative case, wait in order
- for (int other = 0; other < size - 1; other++) {
- Request::wait(&(requests[other]), MPI_STATUS_IGNORE);
- if (index < rank && op != MPI_OP_NULL)
- op->apply(tmpbufs[other], recvbuf, &count, datatype);
- }
- }
- for(index = 0; index < rank; index++) {
- smpi_free_tmp_buffer(tmpbufs[index]);
- }
- for(index = 0; index < size-1; index++) {
- Request::unref(&requests[index]);
- }
- xbt_free(tmpbufs);
- xbt_free(requests);
-}
-
-void smpi_mpi_exscan(void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm)
-{
- int system_tag = -888;
- MPI_Aint lb = 0;
- MPI_Aint dataext = 0;
- int recvbuf_is_empty=1;
- int rank = comm->rank();
- int size = comm->size();
-
- datatype->extent(&lb, &dataext);
-
- // Send/Recv buffers to/from others;
- MPI_Request *requests = xbt_new(MPI_Request, size - 1);
- void **tmpbufs = xbt_new(void *, rank);
- int index = 0;
- for (int other = 0; other < rank; other++) {
- tmpbufs[index] = smpi_get_tmp_sendbuffer(count * dataext);
- requests[index] = Request::irecv_init(tmpbufs[index], count, datatype, other, system_tag, comm);
- index++;
- }
- for (int other = rank + 1; other < size; other++) {
- requests[index] = Request::isend_init(sendbuf, count, datatype, other, system_tag, comm);
- index++;
- }
- // Wait for completion of all comms.
- Request::startall(size - 1, requests);
-
- if(op != MPI_OP_NULL && op->is_commutative()){
- for (int other = 0; other < size - 1; other++) {
- index = Request::waitany(size - 1, requests, MPI_STATUS_IGNORE);
- if(index == MPI_UNDEFINED) {
- break;
- }
- if(index < rank) {
- if(recvbuf_is_empty){
- Datatype::copy(tmpbufs[index], count, datatype, recvbuf, count, datatype);
- recvbuf_is_empty=0;
- } else
- // #Request is below rank: it's a irecv
- op->apply(tmpbufs[index], recvbuf, &count, datatype);
- }
- }
- }else{
- //non commutative case, wait in order
- for (int other = 0; other < size - 1; other++) {
- Request::wait(&(requests[other]), MPI_STATUS_IGNORE);
- if(index < rank) {
- if (recvbuf_is_empty) {
- Datatype::copy(tmpbufs[other], count, datatype, recvbuf, count, datatype);
- recvbuf_is_empty = 0;
- } else
- if(op!=MPI_OP_NULL) op->apply( tmpbufs[other], recvbuf, &count, datatype);
- }
- }
- }
- for(index = 0; index < rank; index++) {
- smpi_free_tmp_buffer(tmpbufs[index]);
- }
- for(index = 0; index < size-1; index++) {
- Request::unref(&requests[index]);
- }
- xbt_free(tmpbufs);
- xbt_free(requests);
-}
-
