int MPI_Recv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Status *status);
int MPI_Isend(void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm, MPI_Request *request);
int MPI_Send(void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm);
+int MPI_Bcast(void *buf, int count, MPI_Datatype datatype, int root, MPI_Comm comm);
int MPI_Comm_split(MPI_Comm comm, int color, int key, MPI_Comm *comm_out);
// smpi functions
+// FIXME: remove
+#include <stdio.h>
#include "private.h"
int MPI_Init(int *argc, char ***argv)
return retval;
}
+// FIXME: overly simplistic
+int MPI_Bcast(void *buf, int count, MPI_Datatype datatype, int root, MPI_Comm comm) {
+
+ int retval = MPI_SUCCESS;
+ int rank;
+
+ smpi_bench_end();
+
+ rank = smpi_mpi_comm_rank(comm);
+
+ if (rank == root) {
+ int i;
+ smpi_mpi_request_t *requests = xbt_new(smpi_mpi_request_t, comm->size - 1);
+ for (i = 1; i < comm->size; i++) {
+ retval = smpi_create_request(buf, count, datatype, root, (root + i) % comm->size, 0, comm, requests + i - 1);
+ smpi_mpi_isend(requests[i - 1]);
+ }
+ for (i = 0; i < comm->size - 1; i++) {
+ smpi_mpi_wait(requests[i], MPI_STATUS_IGNORE);
+ xbt_mallocator_release(smpi_global->request_mallocator, requests[i]);
+ }
+ xbt_free(requests);
+ } else {
+ smpi_mpi_request_t request;
+ retval = smpi_create_request(buf, count, datatype, root, rank, 0, comm, &request);
+ smpi_mpi_irecv(request);
+ smpi_mpi_wait(request, MPI_STATUS_IGNORE);
+ xbt_mallocator_release(smpi_global->request_mallocator, request);
+ }
+
+ smpi_bench_begin();
+
+ return retval;
+}
+
// FIXME: needs to return null in event of MPI_UNDEFINED color...
+// FIXME: seriously, this isn't pretty
int MPI_Comm_split(MPI_Comm comm, int color, int key, MPI_Comm *comm_out)
{
int retval = MPI_SUCCESS;
retval = smpi_create_request(colorkey, 1, MPI_INT, 0, rank, 0, comm, &request);
smpi_mpi_irecv(request);
smpi_mpi_wait(request, &status);
- comm_out = request->data;
+ *comm_out = request->data;
}
smpi_bench_begin();