#include "private.h"
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_sender, smpi, "Logging specific to SMPI (sender)");
+
int smpi_sender(int argc, char **argv)
{
smx_process_t self;
smx_host_t shost;
- int rank;
+
+ int index;
xbt_fifo_t request_queue;
smx_mutex_t request_queue_mutex;
- int size;
int running_hosts_count;
smx_host_t dhost;
- char communication[] = "communication";
smx_action_t action;
+ e_surf_action_state_t state;
+
smpi_received_message_t message;
- int drank;
+ int dindex;
smx_process_t receiver_process;
// make sure root is done before own initialization
SIMIX_mutex_lock(smpi_global->start_stop_mutex);
- if (!smpi_global->root_ready) {
+ while (!smpi_global->root_ready) {
SIMIX_cond_wait(smpi_global->start_stop_cond, smpi_global->start_stop_mutex);
}
SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
- rank = smpi_mpi_comm_rank(smpi_mpi_global->mpi_comm_world, shost);
- size = smpi_mpi_comm_size(smpi_mpi_global->mpi_comm_world);
+ index = smpi_host_index();
- request_queue = smpi_global->pending_send_request_queues[rank];
- request_queue_mutex = smpi_global->pending_send_request_queues_mutexes[rank];
+ request_queue = smpi_global->pending_send_request_queues[index];
+ request_queue_mutex = smpi_global->pending_send_request_queues_mutexes[index];
- smpi_global->sender_processes[rank] = self;
+ smpi_global->sender_processes[index] = self;
// wait for all nodes to signal initializatin complete
SIMIX_mutex_lock(smpi_global->start_stop_mutex);
smpi_global->ready_process_count++;
- if (smpi_global->ready_process_count < 3 * size) {
- SIMIX_cond_wait(smpi_global->start_stop_cond, smpi_global->start_stop_mutex);
- } else {
+ if (smpi_global->ready_process_count >= 3 * smpi_global->host_count) {
SIMIX_cond_broadcast(smpi_global->start_stop_cond);
}
+ while (smpi_global->ready_process_count < 3 * smpi_global->host_count) {
+ SIMIX_cond_wait(smpi_global->start_stop_cond, smpi_global->start_stop_mutex);
+ }
SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
do {
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 = request->src;
- message->dst = request->dst;
- message->tag = request->tag;
- message->buf = xbt_malloc(request->datatype->size * request->count);
+ message->comm = request->comm;
+ message->src = request->comm->index_to_rank_map[index];
+ 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);
- dhost = request->comm->hosts[request->dst];
- drank = smpi_mpi_comm_rank(smpi_mpi_global->mpi_comm_world, dhost);
+ dindex = request->comm->rank_to_index_map[request->dst];
+ dhost = smpi_global->hosts[dindex];
- SIMIX_mutex_lock(smpi_global->received_message_queues_mutexes[drank]);
- xbt_fifo_push(smpi_global->received_message_queues[drank], message);
- SIMIX_mutex_unlock(smpi_global->received_message_queues_mutexes[drank]);
+ message->forward = (request->forward - 1) / 2;
+ request->forward = request->forward / 2;
- 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);
+ action = SIMIX_action_communicate(shost, dhost, "communication", request->datatype->size * request->count, -1.0);
SIMIX_register_action_to_condition(action, request->cond);
- SIMIX_cond_wait(request->cond, request->mutex);
+
+ for (
+ state = SIMIX_action_get_state(action);
+ state == SURF_ACTION_READY ||
+ state == SURF_ACTION_RUNNING;
+ state = SIMIX_action_get_state(action)
+ ) {
+ SIMIX_cond_wait(request->cond, request->mutex);
+ }
+
+ 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]);
+
SIMIX_unregister_action_to_condition(action, request->cond);
+ SIMIX_action_destroy(action);
SIMIX_mutex_unlock(request->mutex);
- //SIMIX_action_destroy(action);
-
// wake up receiver if necessary
- receiver_process = smpi_global->receiver_processes[drank];
+ receiver_process = smpi_global->receiver_processes[dindex];
if (SIMIX_process_is_suspended(receiver_process)) {
SIMIX_process_resume(receiver_process);
}