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Begin to add a MVAPICH2 collectives selector. Alltoall, Allgather and gather done.
[simgrid.git]
/
src
/
smpi
/
colls
/
alltoallv-pair-mpi-barrier.c
diff --git
a/src/smpi/colls/alltoallv-pair-mpi-barrier.c
b/src/smpi/colls/alltoallv-pair-mpi-barrier.c
index
62b0d71
..
b5b05e8
100644
(file)
--- a/
src/smpi/colls/alltoallv-pair-mpi-barrier.c
+++ b/
src/smpi/colls/alltoallv-pair-mpi-barrier.c
@@
-1,3
+1,9
@@
+/* 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"
/*****************************************************************************
#include "colls_private.h"
/*****************************************************************************
@@
-36,6
+42,10
@@
smpi_coll_tuned_alltoallv_pair_mpi_barrier(void *send_buff, int *send_counts, in
rank = smpi_comm_rank(comm);
num_procs = smpi_comm_size(comm);
rank = smpi_comm_rank(comm);
num_procs = smpi_comm_size(comm);
+
+ if((num_procs&(num_procs-1)))
+ THROWF(arg_error,0, "alltoallv 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 = smpi_datatype_get_extent(send_type);
recv_chunk = smpi_datatype_get_extent(recv_type);