add reduce scatter collectives from openmpi, and fix existing one

[simgrid.git] / src / smpi / smpi_global.c

diff --git a/src/smpi/smpi_global.c b/src/smpi/smpi_global.c
index 189bac1..5b05cfe 100644 (file)
--- a/src/smpi/smpi_global.c
+++ b/src/smpi/smpi_global.c
@@ -408,6 +408,11 @@ int smpi_main(int (*realmain) (int argc, char *argv[]),int argc, char *argv[])
                                  MPI_Op op, int root, MPI_Comm comm))
                        mpi_coll_reduce_description[reduce_id].coll;
 
+  int reduce_scatter_id = find_coll_description(mpi_coll_reduce_scatter_description,
+                                           sg_cfg_get_string("smpi/reduce_scatter"));
+  mpi_coll_reduce_scatter_fun = (int (*)(void *sbuf, void *rbuf, int *rcounts,\
+                    MPI_Datatype dtype,MPI_Op  op,MPI_Comm  comm))
+                          mpi_coll_reduce_scatter_description[reduce_scatter_id].coll;
   smpi_global_init();
 
   /* Clean IO before the run */