+
+int MPI_Send(void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm) {
+ int retval;
+ int rank = comm != MPI_COMM_NULL ? smpi_comm_rank(comm) : -1;
+
+#ifdef HAVE_TRACING
+ int dst_traced = smpi_group_rank(smpi_comm_group(comm), dst);
+ TRACE_smpi_ptp_in (rank, rank, dst_traced, __FUNCTION__);
+ TRACE_smpi_send (rank, rank, dst_traced);
+#endif
+ smpi_bench_end(rank, "Send");
+ if (comm == MPI_COMM_NULL) {
+ retval = MPI_ERR_COMM;
+ } else {
+ smpi_mpi_send(buf, count, datatype, dst, tag, comm);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(rank, "Send");
+#ifdef HAVE_TRACING
+ TRACE_smpi_ptp_out (rank, rank, dst_traced, __FUNCTION__);
+#endif
+ return retval;
+}
+
+int MPI_Sendrecv(void* sendbuf, int sendcount, MPI_Datatype sendtype, int dst, int sendtag, void* recvbuf, int recvcount, MPI_Datatype recvtype, int src, int recvtag, MPI_Comm comm, MPI_Status* status) {
+ int retval;
+ int rank = comm != MPI_COMM_NULL ? smpi_comm_rank(comm) : -1;
+
+#ifdef HAVE_TRACING
+ int dst_traced = smpi_group_rank(smpi_comm_group(comm), dst);
+ int src_traced = smpi_group_rank(smpi_comm_group(comm), src);
+ TRACE_smpi_ptp_in (rank, src_traced, dst_traced, __FUNCTION__);
+ TRACE_smpi_send (rank, rank, dst_traced);
+ TRACE_smpi_send (rank, src_traced, rank);
+#endif
+ smpi_bench_end(rank, "Sendrecv");
+ if (comm == MPI_COMM_NULL) {
+ retval = MPI_ERR_COMM;
+ } else if (sendtype == MPI_DATATYPE_NULL || recvtype == MPI_DATATYPE_NULL) {
+ retval = MPI_ERR_TYPE;
+ } else {
+ smpi_mpi_sendrecv(sendbuf, sendcount, sendtype, dst, sendtag, recvbuf, recvcount, recvtype, src, recvtag, comm, status);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(rank, "Sendrecv");
+#ifdef HAVE_TRACING
+ TRACE_smpi_ptp_out (rank, src_traced, dst_traced, __FUNCTION__);
+ TRACE_smpi_recv (rank, rank, dst_traced);
+ TRACE_smpi_recv (rank, src_traced, rank);
+#endif
+ return retval;
+}
+
+int MPI_Sendrecv_replace(void* buf, int count, MPI_Datatype datatype, int dst, int sendtag, int src, int recvtag, MPI_Comm comm, MPI_Status* status) {
+ //TODO: suboptimal implementation
+ void* recvbuf;
+ int retval, size;
+
+ size = smpi_datatype_size(datatype) * count;
+ recvbuf = xbt_new(char, size);
+ retval = MPI_Sendrecv(buf, count, datatype, dst, sendtag, recvbuf, count, datatype, src, recvtag, comm, status);
+ memcpy(buf, recvbuf, size * sizeof(char));
+ xbt_free(recvbuf);
+ return retval;
+}
+
+int MPI_Test(MPI_Request* request, int* flag, MPI_Status* status) {
+ int retval;
+ int rank = request && (*request)->comm != MPI_COMM_NULL
+ ? smpi_comm_rank((*request)->comm)
+ : -1;
+
+ smpi_bench_end(rank, "Test");
+ if(request == NULL || flag == NULL) {
+ retval = MPI_ERR_ARG;
+ } else if(*request == MPI_REQUEST_NULL) {
+ retval = MPI_ERR_REQUEST;
+ } else {
+ *flag = smpi_mpi_test(request, status);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(rank, "Test");
+ return retval;
+}
+
+int MPI_Testany(int count, MPI_Request requests[], int* index, int* flag, MPI_Status* status) {
+ int retval;
+
+ smpi_bench_end(-1, NULL); //FIXME
+ if(index == NULL || flag == NULL) {
+ retval = MPI_ERR_ARG;
+ } else {
+ *flag = smpi_mpi_testany(count, requests, index, status);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(-1, NULL);
+ return retval;
+}
+
+int MPI_Wait(MPI_Request* request, MPI_Status* status) {
+ int retval;
+ int rank = request && (*request)->comm != MPI_COMM_NULL
+ ? smpi_comm_rank((*request)->comm)
+ : -1;
+
+#ifdef HAVE_TRACING
+ MPI_Group group = smpi_comm_group((*request)->comm);
+ int src_traced = smpi_group_rank (group , (*request)->src);
+ int dst_traced = smpi_group_rank (group , (*request)->dst);
+ int is_wait_for_receive = (*request)->recv;
+ TRACE_smpi_ptp_in (rank, src_traced, dst_traced, __FUNCTION__);
+#endif
+ smpi_bench_end(rank, "Wait");
+ if(request == NULL) {
+ retval = MPI_ERR_ARG;
+ } else if(*request == MPI_REQUEST_NULL) {
+ retval = MPI_ERR_REQUEST;
+ } else {
+ smpi_mpi_wait(request, status);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(rank, "Wait");
+#ifdef HAVE_TRACING
+ TRACE_smpi_ptp_out (rank, src_traced, dst_traced, __FUNCTION__);
+ if (is_wait_for_receive){
+ TRACE_smpi_recv (rank, src_traced, dst_traced);
+ }
+#endif
+ return retval;
+}
+
+int MPI_Waitany(int count, MPI_Request requests[], int* index, MPI_Status* status) {
+ int retval;
+
+#ifdef HAVE_TRACING
+ //save requests information for tracing
+ int i;
+ xbt_dynar_t srcs = xbt_dynar_new (sizeof(int), xbt_free);
+ xbt_dynar_t dsts = xbt_dynar_new (sizeof(int), xbt_free);
+ xbt_dynar_t recvs = xbt_dynar_new (sizeof(int), xbt_free);
+ for (i = 0; i < count; i++){
+ MPI_Request req = requests[i]; //already received requests are no longer valid
+ if (req){
+ int *asrc = xbt_new(int, 1);
+ int *adst = xbt_new(int, 1);
+ int *arecv = xbt_new(int, 1);
+ *asrc = req->src;
+ *adst = req->dst;
+ *arecv = req->recv;
+ xbt_dynar_insert_at (srcs, i, asrc);
+ xbt_dynar_insert_at (dsts, i, adst);
+ xbt_dynar_insert_at (recvs, i, arecv);
+ }else{
+ int *t = xbt_new(int, 1);
+ xbt_dynar_insert_at (srcs, i, t);
+ xbt_dynar_insert_at (dsts, i, t);
+ xbt_dynar_insert_at (recvs, i, t);
+ }
+ }
+
+ //search for a suitable request to give the rank of current mpi proc
+ MPI_Request req = NULL;
+ for (i = 0; i < count && req == NULL; i++) {
+ req = requests[i];
+ }
+ MPI_Comm comm = (req)->comm;
+ int rank_traced = smpi_comm_rank(comm);
+ TRACE_smpi_ptp_in (rank_traced, -1, -1, __FUNCTION__);
+#endif
+ smpi_bench_end(-1, NULL); //FIXME
+ if(index == NULL) {
+ retval = MPI_ERR_ARG;
+ } else {
+ *index = smpi_mpi_waitany(count, requests, status);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(-1, NULL);
+#ifdef HAVE_TRACING
+ int src_traced, dst_traced, is_wait_for_receive;
+ xbt_dynar_get_cpy (srcs, *index, &src_traced);
+ xbt_dynar_get_cpy (dsts, *index, &dst_traced);
+ xbt_dynar_get_cpy (recvs, *index, &is_wait_for_receive);
+ if (is_wait_for_receive){
+ TRACE_smpi_recv (rank_traced, src_traced, dst_traced);
+ }
+ TRACE_smpi_ptp_out (rank_traced, src_traced, dst_traced, __FUNCTION__);
+ //clean-up of dynars
+ xbt_free (srcs);
+ xbt_free (dsts);
+ xbt_free (recvs);
+#endif
+ return retval;
+}
+
+int MPI_Waitall(int count, MPI_Request requests[], MPI_Status status[]) {
+
+#ifdef HAVE_TRACING
+ //save information from requests
+ int i;
+ xbt_dynar_t srcs = xbt_dynar_new (sizeof(int), xbt_free);
+ xbt_dynar_t dsts = xbt_dynar_new (sizeof(int), xbt_free);
+ xbt_dynar_t recvs = xbt_dynar_new (sizeof(int), xbt_free);
+ for (i = 0; i < count; i++){
+ MPI_Request req = requests[i]; //all req should be valid in Waitall
+ int *asrc = xbt_new(int, 1);
+ int *adst = xbt_new(int, 1);
+ int *arecv = xbt_new(int, 1);
+ *asrc = req->src;
+ *adst = req->dst;
+ *arecv = req->recv;
+ xbt_dynar_insert_at (srcs, i, asrc);
+ xbt_dynar_insert_at (dsts, i, adst);
+ xbt_dynar_insert_at (recvs, i, arecv);
+ }
+
+// find my rank inside one of MPI_Comm's of the requests
+ MPI_Request req = NULL;
+ for (i = 0; i < count && req == NULL; i++) {
+ req = requests[i];
+ }
+ MPI_Comm comm = (req)->comm;
+ int rank_traced = smpi_comm_rank(comm);
+ TRACE_smpi_ptp_in (rank_traced, -1, -1, __FUNCTION__);
+#endif
+ smpi_bench_end(-1, NULL); //FIXME
+ smpi_mpi_waitall(count, requests, status);
+ smpi_bench_begin(-1, NULL);
+#ifdef HAVE_TRACING
+ for (i = 0; i < count; i++){
+ int src_traced, dst_traced, is_wait_for_receive;
+ xbt_dynar_get_cpy (srcs, i, &src_traced);
+ xbt_dynar_get_cpy (dsts, i, &dst_traced);
+ xbt_dynar_get_cpy (recvs, i, &is_wait_for_receive);
+ if (is_wait_for_receive){
+ TRACE_smpi_recv (rank_traced, src_traced, dst_traced);
+ }
+ }
+ TRACE_smpi_ptp_out (rank_traced, -1, -1, __FUNCTION__);
+ //clean-up of dynars
+ xbt_free (srcs);
+ xbt_free (dsts);
+ xbt_free (recvs);
+#endif
+ return MPI_SUCCESS;
+}
+
+int MPI_Waitsome(int incount, MPI_Request requests[], int* outcount, int* indices, MPI_Status status[]) {
+ int retval;
+
+ smpi_bench_end(-1, NULL); //FIXME
+ if(outcount == NULL || indices == NULL) {
+ retval = MPI_ERR_ARG;
+ } else {
+ *outcount = smpi_mpi_waitsome(incount, requests, indices, status);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(-1, NULL);
+ return retval;
+}
+
+int MPI_Bcast(void* buf, int count, MPI_Datatype datatype, int root, MPI_Comm comm) {
+ int retval;
+ int rank = comm != MPI_COMM_NULL ? smpi_comm_rank(comm) : -1;
+
+#ifdef HAVE_TRACING
+ int root_traced = smpi_group_rank(smpi_comm_group(comm), root);
+ TRACE_smpi_collective_in (rank, root_traced, __FUNCTION__);
+#endif
+ smpi_bench_end(rank, "Bcast");
+ if(comm == MPI_COMM_NULL) {
+ retval = MPI_ERR_COMM;
+ } else {
+ smpi_mpi_bcast(buf, count, datatype, root, comm);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(rank, "Bcast");
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_out (rank, root_traced, __FUNCTION__);
+#endif
+ return retval;
+}
+
+int MPI_Barrier(MPI_Comm comm) {
+ int retval;
+ int rank = comm != MPI_COMM_NULL ? smpi_comm_rank(comm) : -1;
+
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_in (rank, -1, __FUNCTION__);
+#endif
+ smpi_bench_end(rank, "Barrier");
+ if(comm == MPI_COMM_NULL) {
+ retval = MPI_ERR_COMM;
+ } else {
+ smpi_mpi_barrier(comm);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(rank, "Barrier");
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_out (rank, -1, __FUNCTION__);
+#endif
+ return retval;
+}
+
+int MPI_Gather(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm) {
+ int retval;
+ int rank = comm != MPI_COMM_NULL ? smpi_comm_rank(comm) : -1;
+
+#ifdef HAVE_TRACING
+ int root_traced = smpi_group_rank(smpi_comm_group(comm), root);
+ TRACE_smpi_collective_in (rank, root_traced, __FUNCTION__);
+#endif
+ smpi_bench_end(rank, "Gather");
+ if(comm == MPI_COMM_NULL) {
+ retval = MPI_ERR_COMM;
+ } else if(sendtype == MPI_DATATYPE_NULL || recvtype == MPI_DATATYPE_NULL) {
+ retval = MPI_ERR_TYPE;
+ } else {
+ smpi_mpi_gather(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, root, comm);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(rank, "Gather");
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_out (rank, root_traced, __FUNCTION__);
+#endif
+ return retval;
+}
+
+int MPI_Gatherv(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int* recvcounts, int* displs, MPI_Datatype recvtype, int root, MPI_Comm comm) {
+ int retval;
+ int rank = comm != MPI_COMM_NULL ? smpi_comm_rank(comm) : -1;
+
+#ifdef HAVE_TRACING
+ int root_traced = smpi_group_rank(smpi_comm_group(comm), root);
+ TRACE_smpi_collective_in (rank, root_traced, __FUNCTION__);
+#endif
+ smpi_bench_end(rank, "Gatherv");
+ if(comm == MPI_COMM_NULL) {
+ retval = MPI_ERR_COMM;
+ } else if(sendtype == MPI_DATATYPE_NULL || recvtype == MPI_DATATYPE_NULL) {
+ retval = MPI_ERR_TYPE;
+ } else if(recvcounts == NULL || displs == NULL) {
+ retval = MPI_ERR_ARG;
+ } else {
+ smpi_mpi_gatherv(sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, root, comm);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(rank, "Gatherv");
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_out (rank, root_traced, __FUNCTION__);
+#endif
+ return retval;
+}
+
+int MPI_Allgather(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm) {
+ int retval;
+ int rank = comm != MPI_COMM_NULL ? smpi_comm_rank(comm) : -1;
+
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_in (rank, -1, __FUNCTION__);
+#endif
+ smpi_bench_end(rank, "Allgather");
+ if(comm == MPI_COMM_NULL) {
+ retval = MPI_ERR_COMM;
+ } else if(sendtype == MPI_DATATYPE_NULL || recvtype == MPI_DATATYPE_NULL) {
+ retval = MPI_ERR_TYPE;
+ } else {
+ smpi_mpi_allgather(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, comm);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(rank, "Allgather");
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_out (rank, -1, __FUNCTION__);
+#endif
+ return retval;
+}
+
+int MPI_Allgatherv(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int* recvcounts, int* displs, MPI_Datatype recvtype, MPI_Comm comm) {
+ int retval;
+ int rank = comm != MPI_COMM_NULL ? smpi_comm_rank(comm) : -1;
+
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_in (rank, -1, __FUNCTION__);
+#endif
+ smpi_bench_end(rank, "Allgatherv");
+ if(comm == MPI_COMM_NULL) {
+ retval = MPI_ERR_COMM;
+ } else if(sendtype == MPI_DATATYPE_NULL || recvtype == MPI_DATATYPE_NULL) {
+ retval = MPI_ERR_TYPE;
+ } else if(recvcounts == NULL || displs == NULL) {
+ retval = MPI_ERR_ARG;
+ } else {
+ smpi_mpi_allgatherv(sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, comm);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(rank, "Allgatherv");
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_out (rank, -1, __FUNCTION__);
+#endif
+ return retval;
+}
+
+int MPI_Scatter(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm) {
+ int retval;
+ int rank = comm != MPI_COMM_NULL ? smpi_comm_rank(comm) : -1;
+
+#ifdef HAVE_TRACING
+ int root_traced = smpi_group_rank(smpi_comm_group(comm), root);
+ TRACE_smpi_collective_in (rank, root_traced, __FUNCTION__);
+#endif
+ smpi_bench_end(rank, "Scatter");
+ if(comm == MPI_COMM_NULL) {
+ retval = MPI_ERR_COMM;
+ } else if(sendtype == MPI_DATATYPE_NULL || recvtype == MPI_DATATYPE_NULL) {
+ retval = MPI_ERR_TYPE;
+ } else {
+ smpi_mpi_scatter(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, root, comm);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(rank, "Scatter");
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_out (rank, root_traced, __FUNCTION__);
+#endif
+ return retval;
+}
+
+int MPI_Scatterv(void* sendbuf, int* sendcounts, int* displs, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm) {
+ int retval;
+ int rank = comm != MPI_COMM_NULL ? smpi_comm_rank(comm) : -1;
+
+#ifdef HAVE_TRACING
+ int root_traced = smpi_group_rank(smpi_comm_group(comm), root);
+ TRACE_smpi_collective_in (rank, root_traced, __FUNCTION__);
+#endif
+ smpi_bench_end(rank, "Scatterv");
+ if(comm == MPI_COMM_NULL) {
+ retval = MPI_ERR_COMM;
+ } else if(sendtype == MPI_DATATYPE_NULL || recvtype == MPI_DATATYPE_NULL) {
+ retval = MPI_ERR_TYPE;
+ } else if(sendcounts == NULL || displs == NULL) {
+ retval = MPI_ERR_ARG;
+ } else {
+ smpi_mpi_scatterv(sendbuf, sendcounts, displs, sendtype, recvbuf, recvcount, recvtype, root, comm);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(rank, "Scatterv");
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_out (rank, root_traced, __FUNCTION__);
+#endif
+ return retval;
+}
+
+int MPI_Reduce(void* sendbuf, void* recvbuf, int count, MPI_Datatype datatype, MPI_Op op, int root, MPI_Comm comm) {
+ int retval;
+ int rank = comm != MPI_COMM_NULL ? smpi_comm_rank(comm) : -1;
+
+#ifdef HAVE_TRACING
+ int root_traced = smpi_group_rank(smpi_comm_group(comm), root);
+ TRACE_smpi_collective_in (rank, root_traced, __FUNCTION__);
+#endif
+ smpi_bench_end(rank, "Reduce");
+ if(comm == MPI_COMM_NULL) {
+ retval = MPI_ERR_COMM;
+ } else if(datatype == MPI_DATATYPE_NULL || op == MPI_OP_NULL) {
+ retval = MPI_ERR_ARG;
+ } else {
+ smpi_mpi_reduce(sendbuf, recvbuf, count, datatype, op, root, comm);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(rank, "Reduce");
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_out (rank, root_traced, __FUNCTION__);
+#endif
+ return retval;
+}
+
+int MPI_Allreduce(void* sendbuf, void* recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm) {
+ int retval;
+ int rank = comm != MPI_COMM_NULL ? smpi_comm_rank(comm) : -1;
+
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_in (rank, -1, __FUNCTION__);
+#endif
+ smpi_bench_end(rank, "Allreduce");
+ if(comm == MPI_COMM_NULL) {
+ retval = MPI_ERR_COMM;
+ } else if(datatype == MPI_DATATYPE_NULL) {
+ retval = MPI_ERR_TYPE;
+ } else if(op == MPI_OP_NULL) {
+ retval = MPI_ERR_OP;
+ } else {
+ smpi_mpi_allreduce(sendbuf, recvbuf, count, datatype, op, comm);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(rank, "Allreduce");
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_out (rank, -1, __FUNCTION__);
+#endif
+ return retval;
+}
+
+int MPI_Scan(void* sendbuf, void* recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm) {
+ int retval;
+ int rank = comm != MPI_COMM_NULL ? smpi_comm_rank(comm) : -1;
+
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_in (rank, -1, __FUNCTION__);
+#endif
+ smpi_bench_end(rank, "Scan");
+ if(comm == MPI_COMM_NULL) {
+ retval = MPI_ERR_COMM;
+ } else if(datatype == MPI_DATATYPE_NULL) {
+ retval = MPI_ERR_TYPE;
+ } else if(op == MPI_OP_NULL) {
+ retval = MPI_ERR_OP;
+ } else {
+ smpi_mpi_scan(sendbuf, recvbuf, count, datatype, op, comm);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(rank, "Scan");
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_out (rank, -1, __FUNCTION__);
+#endif
+ return retval;
+}
+
+int MPI_Reduce_scatter(void* sendbuf, void* recvbuf, int* recvcounts, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm) {
+ int retval, i, size, count;
+ int* displs;
+ int rank = comm != MPI_COMM_NULL ? smpi_comm_rank(comm) : -1;
+
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_in (rank, -1, __FUNCTION__);
+#endif
+ smpi_bench_end(rank, "Reduce_scatter");
+ if(comm == MPI_COMM_NULL) {
+ retval = MPI_ERR_COMM;
+ } else if(datatype == MPI_DATATYPE_NULL) {
+ retval = MPI_ERR_TYPE;
+ } else if(op == MPI_OP_NULL) {
+ retval = MPI_ERR_OP;
+ } else if(recvcounts == NULL) {
+ retval = MPI_ERR_ARG;
+ } else {
+ /* arbitrarily choose root as rank 0 */
+ /* TODO: faster direct implementation ? */
+ size = smpi_comm_size(comm);
+ count = 0;
+ displs = xbt_new(int, size);
+ for(i = 0; i < size; i++) {
+ count += recvcounts[i];
+ displs[i] = 0;
+ }
+ smpi_mpi_reduce(sendbuf, recvbuf, count, datatype, op, 0, comm);
+ smpi_mpi_scatterv(recvbuf, recvcounts, displs, datatype, recvbuf, recvcounts[rank], datatype, 0, comm);
+ xbt_free(displs);
+ retval = MPI_SUCCESS;
+ }
+ smpi_bench_begin(rank, "Reduce_scatter");
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_out (rank, -1, __FUNCTION__);
+#endif
+ return retval;
+}
+
+int MPI_Alltoall(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm) {
+ int retval, size, sendsize;
+ int rank = comm != MPI_COMM_NULL ? smpi_comm_rank(comm) : -1;
+
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_in (rank, -1, __FUNCTION__);
+#endif
+ smpi_bench_end(rank, "Alltoall");
+ if(comm == MPI_COMM_NULL) {
+ retval = MPI_ERR_COMM;
+ } else if(sendtype == MPI_DATATYPE_NULL || recvtype == MPI_DATATYPE_NULL) {
+ retval = MPI_ERR_TYPE;
+ } else {
+ size = smpi_comm_size(comm);
+ sendsize = smpi_datatype_size(sendtype) * sendcount;
+ if(sendsize < 200 && size > 12) {
+ retval = smpi_coll_tuned_alltoall_bruck(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, comm);
+ } else if(sendsize < 3000) {
+ retval = smpi_coll_tuned_alltoall_basic_linear(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, comm);
+ } else {
+ retval = smpi_coll_tuned_alltoall_pairwise(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, comm);
+ }
+ }
+ smpi_bench_begin(rank, "Alltoall");
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_out (rank, -1, __FUNCTION__);
+#endif
+ return retval;
+}
+
+int MPI_Alltoallv(void* sendbuf, int* sendcounts, int* senddisps, MPI_Datatype sendtype, void* recvbuf, int *recvcounts, int* recvdisps, MPI_Datatype recvtype, MPI_Comm comm) {
+ int retval;
+ int rank = comm != MPI_COMM_NULL ? smpi_comm_rank(comm) : -1;
+
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_in (rank, -1, __FUNCTION__);
+#endif
+ smpi_bench_end(rank, "Alltoallv");
+ if(comm == MPI_COMM_NULL) {
+ retval = MPI_ERR_COMM;
+ } else if(sendtype == MPI_DATATYPE_NULL || recvtype == MPI_DATATYPE_NULL) {
+ retval = MPI_ERR_TYPE;
+ } else if(sendcounts == NULL || senddisps == NULL || recvcounts == NULL || recvdisps == NULL) {
+ retval = MPI_ERR_ARG;
+ } else {
+ retval = smpi_coll_basic_alltoallv(sendbuf, sendcounts, senddisps, sendtype, recvbuf, recvcounts, recvdisps, recvtype, comm);
+ }
+ smpi_bench_begin(rank, "Alltoallv");
+#ifdef HAVE_TRACING
+ TRACE_smpi_collective_out (rank, -1, __FUNCTION__);
+#endif
+ return retval;
+}
+
+
+int MPI_Get_processor_name( char *name, int *resultlen ) {
+ int retval = MPI_SUCCESS;
+ smpi_bench_end(-1, NULL);
+ strncpy( name , SIMIX_host_get_name(SIMIX_host_self()), MPI_MAX_PROCESSOR_NAME-1);
+ *resultlen= strlen(name) > MPI_MAX_PROCESSOR_NAME ? MPI_MAX_PROCESSOR_NAME : strlen(name);
+
+ smpi_bench_begin(-1, NULL);
+ return retval;
+}
+