smpi_mpi_recv(buf, count, datatype, tree->parent, system_tag + rank, comm, MPI_STATUS_IGNORE);
}
requests = xbt_new(MPI_Request, tree->numChildren);
- DEBUG2("<%d> creates %d requests (1 per child)\n", rank, tree->numChildren);
+ DEBUG2("<%d> creates %d requests (1 per child)", rank, tree->numChildren);
/* iniates sends to ranks lower in the tree */
for(i = 0; i < tree->numChildren; i++) {
if(tree->child[i] == -1) {
}
//every one receives as many messages as it has children
requests = xbt_new(MPI_Request, tree->numChildren);
- DEBUG2("<%d> creates %d requests (1 per child)\n", rank, tree->numChildren);
+ DEBUG2("<%d> creates %d requests (1 per child)", rank, tree->numChildren);
for(i = 0; i < tree->numChildren; i++) {
if(tree->child[i] == -1) {
requests[i] = MPI_REQUEST_NULL;
* Openmpi calls this routine when the message size sent to each rank < 2000 bytes and size < 12
**/
int smpi_coll_tuned_alltoall_bruck(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm) {
- DEBUG0("coll:tuned:alltoall_intra_bruck ** NOT IMPLEMENTED YET**");
+ int system_tag = 777;
+ int i, rank, size, err, count;
+ MPI_Aint lb, sendextent, recvextent;
+ MPI_Request* requests;
+
+ // FIXME: check implementation
+ rank = smpi_comm_rank(comm);
+ size = smpi_comm_size(comm);
+ DEBUG1("<%d> algorithm alltoall_bruck() called.", rank);
+ err = smpi_datatype_extent(sendtype, &lb, &sendextent);
+ err = smpi_datatype_extent(recvtype, &lb, &recvextent);
+ /* Local copy from self */
+ err = smpi_datatype_copy(&((char*)sendbuf)[rank * sendextent], sendcount, sendtype, &((char*)recvbuf)[rank * recvextent], recvcount, 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) {
+ DEBUG3("<%d> skip request creation [src = %d, recvcount = %d]", rank, i, recvcount);
+ continue;
+ }
+ requests[count] = smpi_mpi_irecv(&((char*)recvbuf)[i * recvextent], recvcount, recvtype, i, system_tag, comm);
+ count++;
+ }
+ /* Now create all sends */
+ for(i = 0; i < size; ++i) {
+ if(i == rank) {
+ DEBUG3("<%d> skip request creation [dst = %d, sendcount = %d]", rank, i, sendcount);
+ continue;
+ }
+ requests[count] = smpi_mpi_isend(&((char*)sendbuf)[i * sendextent], sendcount, sendtype, i, system_tag, comm);
+ count++;
+ }
+ /* Wait for them all. If there's an error, note that we don't
+ * care what the error was -- just that there *was* an error. The
+ * PML will finish all requests, even if one or more of them fail.
+ * i.e., by the end of this call, all the requests are free-able.
+ * So free them anyway -- even if there was an error, and return
+ * the error after we free everything.
+ */
+ DEBUG2("<%d> wait for %d requests", rank, count);
+ smpi_mpi_waitall(count, requests, MPI_STATUS_IGNORE);
+ xbt_free(requests);
+ }
return MPI_SUCCESS;
}
int smpi_coll_basic_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, rank, size, err, rcount, scount;
+ int i, rank, size, err, count;
MPI_Aint lb, sendextent, recvextent;
MPI_Request* requests;
if(err == MPI_SUCCESS && size > 1) {
/* Initiate all send/recv to/from others. */
requests = xbt_new(MPI_Request, 2 * (size - 1));
- rcount = 0;
+ count = 0;
/* Create all receives that will be posted first */
for(i = 0; i < size; ++i) {
if(i == rank || recvcounts[i] == 0) {
DEBUG3("<%d> skip request creation [src = %d, recvcounts[src] = %d]", rank, i, recvcounts[i]);
continue;
}
- requests[rcount] = smpi_mpi_irecv(&((char*)recvbuf)[recvdisps[i] * recvextent], recvcounts[i], recvtype, i, system_tag, comm);
- rcount++;
+ requests[count] = smpi_mpi_irecv(&((char*)recvbuf)[recvdisps[i] * recvextent], recvcounts[i], recvtype, i, system_tag, comm);
+ count++;
}
- DEBUG2("<%d> %d irecv requests created", rank, rcount);
- scount = rcount;
/* Now create all sends */
for(i = 0; i < size; ++i) {
if(i == rank || sendcounts[i] == 0) {
DEBUG3("<%d> skip request creation [dst = %d, sendcounts[dst] = %d]", rank, i, sendcounts[i]);
continue;
}
- requests[scount] = smpi_mpi_isend(&((char*)sendbuf)[senddisps[i] * sendextent], sendcounts[i], sendtype, i, system_tag, comm);
- scount++;
+ requests[count] = smpi_mpi_isend(&((char*)sendbuf)[senddisps[i] * sendextent], sendcounts[i], sendtype, i, system_tag, comm);
+ count++;
}
- DEBUG2("<%d> %d isend requests created", rank, scount);
/* Wait for them all. If there's an error, note that we don't
* care what the error was -- just that there *was* an error. The
* PML will finish all requests, even if one or more of them fail.
* So free them anyway -- even if there was an error, and return
* the error after we free everything.
*/
- DEBUG2("<%d> wait for %d requests", rank, rcount + scount);
- smpi_mpi_waitall(rcount + scount, requests, MPI_STATUS_IGNORE);
+ DEBUG2("<%d> wait for %d requests", rank, count);
+ smpi_mpi_waitall(count, requests, MPI_STATUS_IGNORE);
xbt_free(requests);
}
return err;