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updated to use branching-tree broadcast instead of for-loop.
[simgrid.git] / src / smpi / smpi_sender.c
index c3cee34..983ded8 100644 (file)
@@ -61,25 +61,35 @@ int smpi_sender(int argc, char **argv)
                        SIMIX_process_suspend(self);
                } else {
 
-                       message       = xbt_mallocator_get(smpi_global->message_mallocator);
+                       message          = xbt_mallocator_get(smpi_global->message_mallocator);
 
                        SIMIX_mutex_lock(request->mutex);
 
-                       message->comm = request->comm;
-                       message->src  = smpi_mpi_comm_rank(request->comm);
-                       message->tag  = request->tag;
-                       message->buf  = xbt_malloc(request->datatype->size * request->count);
+                       message->comm    = request->comm;
+                       message->src     = smpi_mpi_comm_rank(request->comm);
+                       message->tag     = request->tag;
+                       message->data    = request->data;
+                       message->buf     = xbt_malloc(request->datatype->size * request->count);
                        memcpy(message->buf, request->buf, request->datatype->size * request->count);
-                       message->data = request->data;
 
                        dindex = request->comm->rank_to_index_map[request->dst];
                        dhost  = smpi_global->hosts[dindex];
 
+                       message->forward = (request->forward - 1) / 2;
+                       request->forward = request->forward / 2;
+
                        SIMIX_mutex_lock(smpi_global->received_message_queues_mutexes[dindex]);
                        xbt_fifo_push(smpi_global->received_message_queues[dindex], message);
                        SIMIX_mutex_unlock(smpi_global->received_message_queues_mutexes[dindex]);
 
-                       request->completed = 1;
+                       if (0 < request->forward) {
+                               request->dst = (request->dst + message->forward + 1) % request->comm->size;
+                               SIMIX_mutex_lock(request_queue_mutex);
+                               xbt_fifo_push(request_queue, request);
+                               SIMIX_mutex_unlock(request_queue_mutex);
+                       } else {
+                               request->completed = 1;
+                       }
 
                        action = SIMIX_action_communicate(shost, dhost, communication, request->datatype->size * request->count, -1.0);
 
@@ -89,8 +99,6 @@ int smpi_sender(int argc, char **argv)
 
                        SIMIX_mutex_unlock(request->mutex);
 
-                       //SIMIX_action_destroy(action);
-
                        // wake up receiver if necessary
                        receiver_process = smpi_global->receiver_processes[dindex];
                        if (SIMIX_process_is_suspended(receiver_process)) {