Add collectives for allgather, allreduce, bcast and reduce

[simgrid.git] / src / smpi / colls / alltoall-ring.c

diff --git a/src/smpi/colls/alltoall-ring.c b/src/smpi/colls/alltoall-ring.c
index e5e4e2b..9197609 100644 (file)
--- a/src/smpi/colls/alltoall-ring.c
+++ b/src/smpi/colls/alltoall-ring.c
@@ -20,34 +20,34 @@
 
  ****************************************************************************/
 int
-smpi_coll_tuned_alltoall_ring(void * send_buff, int send_count, MPI_Datatype send_type,
-             void * recv_buff, int recv_count, MPI_Datatype recv_type,
-             MPI_Comm comm)
+smpi_coll_tuned_alltoall_ring(void *send_buff, int send_count,
+                              MPI_Datatype send_type, void *recv_buff,
+                              int recv_count, MPI_Datatype recv_type,
+                              MPI_Comm comm)
 {
   MPI_Status s;
   MPI_Aint send_chunk, recv_chunk;
   int i, src, dst, rank, num_procs;
-  int tag = 1, success = 1; /*, failure = 0, pof2 = 1*/;
+  int tag = 1, success = 1; /*, failure = 0, pof2 = 1 */ ;
+
+  char *send_ptr = (char *) send_buff;
+  char *recv_ptr = (char *) recv_buff;
 
-  char * send_ptr = (char *) send_buff;
-  char * recv_ptr = (char *) recv_buff;
-  
   MPI_Comm_rank(comm, &rank);
   MPI_Comm_size(comm, &num_procs);
   MPI_Type_extent(send_type, &send_chunk);
   MPI_Type_extent(recv_type, &recv_chunk);
 
   send_chunk *= send_count;
-  recv_chunk *= recv_count;  
-
-  for (i = 0; i < num_procs; i++)
-    {
-      src = (rank - i + num_procs) % num_procs;
-      dst = (rank + i) % num_procs;
-      
-      MPI_Sendrecv(send_ptr + dst * send_chunk, send_count, send_type, dst,
-                  tag, recv_ptr + src * recv_chunk, recv_count, recv_type,
-                  src, tag, comm, &s);
-    }
+  recv_chunk *= recv_count;
+
+  for (i = 0; i < num_procs; i++) {
+    src = (rank - i + num_procs) % num_procs;
+    dst = (rank + i) % num_procs;
+
+    MPI_Sendrecv(send_ptr + dst * send_chunk, send_count, send_type, dst,
+                 tag, recv_ptr + src * recv_chunk, recv_count, recv_type,
+                 src, tag, comm, &s);
+  }
   return success;
 }