/home/genaud/Documents/svn/simgrid/simgrid/trunk/src/svn-commit.2.tmp

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/simgrid/simgrid/trunk@6400 48e7efb5-ca39-0410-a469-dd3cf9ba447f

diff --git a/src/smpi/smpi_mpi.c b/src/smpi/smpi_mpi.c
index 11b248f..ca94c57 100644 (file)
--- a/src/smpi/smpi_mpi.c
+++ b/src/smpi/smpi_mpi.c
@@ -235,8 +235,7 @@ int SMPI_MPI_Bcast(void *buf, int count, MPI_Datatype datatype, int root,
 /**
  * debugging helper function
  **/
-void print_buffer_int( void *buf, int len, char *msg, int rank) ;
-void print_buffer_int( void *buf, int len, char *msg, int rank) {
+static void print_buffer_int( void *buf, int len, const char *msg, int rank) {
          int tmp, *v;
          printf("**[%d] %s: ",rank,msg);
          for (tmp=0;tmp<len;tmp++) {
@@ -279,6 +278,7 @@ int SMPI_MPI_Reduce( void *sendbuf, void *recvbuf, int count, MPI_Datatype datat
 
   } else {
            // i am the ROOT: wait for all buffers by creating one request by sender
+           int src;
            tabrequest = xbt_malloc((size-1)*sizeof(smpi_mpi_request_t));
 
           void **tmpbufs = xbt_malloc((size-1)*sizeof(void *));
@@ -290,10 +290,11 @@ int SMPI_MPI_Reduce( void *sendbuf, void *recvbuf, int count, MPI_Datatype datat
 
            // i can not use: 'request->forward = size-1;' (which would progagate size-1 receive reqs)
            // since we should op values as soon as one receiving request matches.
-           for (i=0; i<comm->size-1; i++) {
+           for (i=0; i<size-1; i++) {
                        // reminder: for smpi_create_request() the src is always the process sending.
-                       retval = smpi_create_request(tmpbufs[i], count, datatype,
-                                           MPI_ANY_SOURCE, root,
+                       src = i < root ? i : i+1;
+                       retval = smpi_create_request(tmpbufs[i], count, datatype, 
+                                           src , root,
                                            tag, comm, &(tabrequest[i]));
                        if (NULL != tabrequest[i] && MPI_SUCCESS == retval) {
                                  if (MPI_SUCCESS == retval) {
@@ -302,13 +303,13 @@ int SMPI_MPI_Reduce( void *sendbuf, void *recvbuf, int count, MPI_Datatype datat
                        }
            }
            // now, wait for completion of all irecv's.
-           for (i=0; i<comm->size-1; i++) {
+           for (i=0; i<size-1; i++) {
                        int index = MPI_UNDEFINED;
-                       smpi_mpi_waitany(comm->size-1, tabrequest, &index, MPI_STATUS_IGNORE);
+                       smpi_mpi_waitany(size-1, tabrequest, &index, MPI_STATUS_IGNORE);
 
 #ifdef DEBUG_REDUCE
                        printf("MPI_Waitany() unblocked: root received (completes req[index=%d])\n",index);
-                       print_buffer_int( tmpbufs[index], count, bprintf("tmpbufs[index=%d]",index),rank);
+                       print_buffer_int( tmpbufs[index], count, bprintf("tmpbufs[index=%d] (value received)",index),rank);
 #endif
 
                        // arg 2 is modified