-#include "smpi/mpi.h"
+/* Copyright (c) 2013-2014. The SimGrid Team.
+ * All rights reserved. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include "colls_private.h"
+
/*****************************************************************************
* Function: alltoall_pair
* Auther: Ahmad Faraj
****************************************************************************/
-/*
-int
-alltoall_pair(void * send_buff, int send_count, MPI_Datatype send_type,
- void * recv_buff, int recv_count, MPI_Datatype recv_type,
- MPI_Comm comm)
+
+int smpi_coll_tuned_alltoall_pair_rma(void *send_buff, int send_count, MPI_Datatype send_type,
+ void *recv_buff, int recv_count, MPI_Datatype recv_type,
+ MPI_Comm comm)
{
MPI_Aint send_chunk, recv_chunk;
- MPI_Status s;
MPI_Win win;
int assert = 0;
- int i, src, dst, rank, num_procs;
- int tag = 1, success = 1, failure = 0, pof2 = 1;
-
- char * send_ptr = (char *) send_buff;
- char * recv_ptr = (char *) recv_buff;
-
- MPI_Comm_rank(comm, &rank);
- MPI_Comm_size(comm, &num_procs);
- MPI_Type_extent(send_type, &send_chunk);
- MPI_Type_extent(recv_type, &recv_chunk);
-
- MPI_Win_create(recv_buff, num_procs*recv_chunk*send_count,recv_chunk,0,
- comm, &win);
+ int i, dst, rank, num_procs;
+
+ char *send_ptr = (char *) send_buff;
+
+ rank = smpi_comm_rank(comm);
+ num_procs = smpi_comm_size(comm);
+ send_chunk = smpi_datatype_get_extent(send_type);
+ recv_chunk = smpi_datatype_get_extent(recv_type);
+
+ win=smpi_mpi_win_create(recv_buff, num_procs * recv_chunk * send_count, recv_chunk, 0,
+ comm);
send_chunk *= send_count;
- recv_chunk *= recv_count;
-
- MPI_Win_fence(assert, win);
- for (i = 0; i < num_procs; i++)
- {
- src = dst = rank ^ i;
- MPI_Put(send_ptr + dst * send_chunk, send_count, send_type, dst,
- rank*send_chunk, send_count, send_type, win);
- }
- MPI_Win_fence (assert, win);
- MPI_Win_free(&win);
+ recv_chunk *= recv_count;
+
+ smpi_mpi_win_fence(assert, win);
+ for (i = 0; i < num_procs; i++) {
+ dst = rank ^ i;
+ smpi_mpi_put(send_ptr + dst * send_chunk, send_count, send_type, dst,
+ rank /* send_chunk*/, send_count, send_type, win);
+ }
+ smpi_mpi_win_fence(assert, win);
+ smpi_mpi_win_free(&win);
return 0;
}
-*/
-int
-smpi_coll_tuned_alltoall_pair(void * send_buff, int send_count, MPI_Datatype send_type,
- void * recv_buff, int recv_count, MPI_Datatype recv_type,
- MPI_Comm comm)
+
+int smpi_coll_tuned_alltoall_pair(void *send_buff, int send_count,
+ MPI_Datatype send_type,
+ void *recv_buff, int recv_count,
+ MPI_Datatype recv_type, MPI_Comm comm)
{
MPI_Aint send_chunk, recv_chunk;
MPI_Status s;
int i, src, dst, rank, num_procs;
- int tag = 1, success = 1;
+ int tag = COLL_TAG_ALLTOALL;
+ char *send_ptr = (char *) send_buff;
+ char *recv_ptr = (char *) recv_buff;
- char * send_ptr = (char *) send_buff;
- char * recv_ptr = (char *) recv_buff;
-
- MPI_Comm_rank(comm, &rank);
- MPI_Comm_size(comm, &num_procs);
- MPI_Type_extent(send_type, &send_chunk);
- MPI_Type_extent(recv_type, &recv_chunk);
+ rank = smpi_comm_rank(comm);
+ num_procs = smpi_comm_size(comm);
+
+ if((num_procs&(num_procs-1)))
+ THROWF(arg_error,0, "alltoall pair algorithm can't be used with non power of two number of processes ! ");
+
+ send_chunk = smpi_datatype_get_extent(send_type);
+ recv_chunk = smpi_datatype_get_extent(recv_type);
send_chunk *= send_count;
- recv_chunk *= recv_count;
+ recv_chunk *= recv_count;
- for (i = 0; i < num_procs; i++)
- {
- src = dst = rank ^ i;
- MPI_Sendrecv(send_ptr + dst * send_chunk, send_count, send_type, dst,
- tag, recv_ptr + src * recv_chunk, recv_count, recv_type,
- src, tag, comm, &s);
- }
+ for (i = 0; i < num_procs; i++) {
+ src = dst = rank ^ i;
+ smpi_mpi_sendrecv(send_ptr + dst * send_chunk, send_count, send_type, dst, tag,
+ recv_ptr + src * recv_chunk, recv_count, recv_type, src, tag,
+ comm, &s);
+ }
- return success;
+ return MPI_SUCCESS;
}
-
