X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/7aae0300f97d9f6269e1b11b2ddb92db7679d3f4..7a40637a7db0cf339c5a09ba5594a004a5304a3c:/src/smpi/colls/smpi_default_selector.cpp

diff --git a/src/smpi/colls/smpi_default_selector.cpp b/src/smpi/colls/smpi_default_selector.cpp
index d6126c7d69..0b5198d673 100644
--- a/src/smpi/colls/smpi_default_selector.cpp
+++ b/src/smpi/colls/smpi_default_selector.cpp
@@ -25,38 +25,17 @@ int Coll_barrier_default::barrier(MPI_Comm comm)
 int Coll_gather_default::gather(void *sendbuf, int sendcount, MPI_Datatype sendtype,
                      void *recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm)
 {
-  const 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);
+  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;
 }
 
@@ -87,114 +66,49 @@ int Coll_reduce_scatter_default::reduce_scatter(void *sendbuf, void *recvbuf, in
 int Coll_allgather_default::allgather(void *sendbuf, int sendcount, MPI_Datatype sendtype,
                         void *recvbuf,int recvcount, MPI_Datatype recvtype, MPI_Comm comm)
 {
-  const 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++) {
+  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]);
   }
-  xbt_free(requests);
+  delete[] requests;
+  Request::unref(&request);
   return MPI_SUCCESS;
 }
 
 int Coll_allgatherv_default::allgatherv(void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf,
                          int *recvcounts, int *displs, MPI_Datatype recvtype, MPI_Comm comm)
 {
-  const 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)
 {
-  const 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++) {
+  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]);
-    }
-    xbt_free(requests);
   }
+  delete[] requests;
+  Request::unref(&request);
   return MPI_SUCCESS;
 }
 
@@ -288,55 +202,18 @@ int Coll_alltoall_default::alltoall( void *sbuf, int scount, MPI_Datatype sdtype
 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)
 {
-  const int system_tag = 889;
-  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));
-    int count = 0;
-    /* Create all receives that will be posted first */
-    for (int 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 (int 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 (int i = 0; i < count; i++) {
-      if(requests[i]!=MPI_REQUEST_NULL)
-        Request::unref(&requests[i]);
-    }
-    xbt_free(requests);
+  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;
 }