X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/1d18e615eaa617d3354bc22dfbe711d34be9f902..4bb593c5dd46c9fa83345dc65903620c917317df:/src/smpi/colls/bcast-NTSB.c

diff --git a/src/smpi/colls/bcast-NTSB.c b/src/smpi/colls/bcast-NTSB.c
index 93ace1d3e8..ffdcfc2504 100644
--- a/src/smpi/colls/bcast-NTSB.c
+++ b/src/smpi/colls/bcast-NTSB.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"
 
 int bcast_NTSB_segment_size_in_byte = 8192;
@@ -5,7 +11,7 @@ int bcast_NTSB_segment_size_in_byte = 8192;
 int smpi_coll_tuned_bcast_NTSB(void *buf, int count, MPI_Datatype datatype,
                                int root, MPI_Comm comm)
 {
-  int tag = 5000;
+  int tag = COLL_TAG_BCAST;
   MPI_Status status;
   int rank, size;
   int i;
@@ -18,8 +24,8 @@ int smpi_coll_tuned_bcast_NTSB(void *buf, int count, MPI_Datatype datatype,
   MPI_Aint extent;
   extent = smpi_datatype_get_extent(datatype);
 
-  rank = smpi_comm_rank(MPI_COMM_WORLD);
-  size = smpi_comm_size(MPI_COMM_WORLD);
+  rank = smpi_comm_rank(comm);
+  size = smpi_comm_size(comm);
 
   /* source node and destination nodes (same through out the functions) */
   int from = (rank - 1) / 2;
@@ -32,7 +38,7 @@ int smpi_coll_tuned_bcast_NTSB(void *buf, int count, MPI_Datatype datatype,
 
   /* segment is segment size in number of elements (not bytes) */
   int segment = bcast_NTSB_segment_size_in_byte / extent;
-
+  segment =  segment == 0 ? 1 :segment; 
   /* pipeline length */
   int pipe_length = count / segment;