X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/6de03ecc4e630732984a0673512a5d15fd75e270..954676b700e711f38ec4d286d33d5427d3f4ca46:/src/smpi/colls/allgather-smp-simple.c

diff --git a/src/smpi/colls/allgather-smp-simple.c b/src/smpi/colls/allgather-smp-simple.c
index 1a38857619..e54c75b5b9 100644
--- a/src/smpi/colls/allgather-smp-simple.c
+++ b/src/smpi/colls/allgather-smp-simple.c
@@ -5,9 +5,6 @@
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
 #include "colls_private.h"
-#ifndef NUM_CORE
-#define NUM_CORE 8
-#endif
 
 int smpi_coll_tuned_allgather_smp_simple(void *send_buf, int scount,
                                          MPI_Datatype stype, void *recv_buf,
@@ -17,10 +14,13 @@ int smpi_coll_tuned_allgather_smp_simple(void *send_buf, int scount,
   int src, dst, comm_size, rank;
   comm_size = smpi_comm_size(comm);
 
-  int num_core = simcall_host_get_core(SIMIX_host_self());
-  // do we use the default one or the number of cores in the platform ?
-  // if the number of cores is one, the platform may be simulated with 1 node = 1 core
-  if (num_core == 1) num_core = NUM_CORE;
+  if(smpi_comm_get_leaders_comm(comm)==MPI_COMM_NULL){
+    smpi_comm_init_smp(comm);
+  }
+  int num_core=1;
+  if (smpi_comm_is_uniform(comm)){
+    num_core = smpi_comm_size(smpi_comm_get_intra_comm(comm));
+  }
 
   if(comm_size%num_core)
      THROWF(arg_error,0, "allgather SMP simple algorithm can't be used with non multiple of NUM_CORE=%d number of processes ! ", num_core);