3 int smpi_sender(int argc, char **argv)
9 xbt_fifo_t request_queue;
10 smx_mutex_t request_queue_mutex;
13 int running_hosts_count;
15 smpi_mpi_request_t request;
19 char communicate[] = "communicate";
22 smpi_received_message_t message;
26 smx_process_t receiver_process;
28 self = SIMIX_process_self();
29 shost = SIMIX_host_self();
31 // make sure root is done before own initialization
32 SIMIX_mutex_lock(smpi_global->start_stop_mutex);
33 if (!smpi_global->root_ready) {
34 SIMIX_cond_wait(smpi_global->start_stop_cond, smpi_global->start_stop_mutex);
36 SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
38 rank = smpi_mpi_comm_rank(smpi_mpi_global->mpi_comm_world, shost);
39 size = smpi_mpi_comm_size(smpi_mpi_global->mpi_comm_world);
41 request_queue = smpi_global->pending_send_request_queues[rank];
42 request_queue_mutex = smpi_global->pending_send_request_queues_mutexes[rank];
44 smpi_global->sender_processes[rank] = self;
46 // wait for all nodes to signal initializatin complete
47 SIMIX_mutex_lock(smpi_global->start_stop_mutex);
48 smpi_global->ready_process_count++;
49 if (smpi_global->ready_process_count < 3 * size) {
50 SIMIX_cond_wait(smpi_global->start_stop_cond, smpi_global->start_stop_mutex);
52 SIMIX_cond_broadcast(smpi_global->start_stop_cond);
54 SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
58 SIMIX_mutex_lock(request_queue_mutex);
59 request = xbt_fifo_shift(request_queue);
60 SIMIX_mutex_unlock(request_queue_mutex);
62 if (NULL == request) {
63 SIMIX_process_suspend(self);
66 message = xbt_mallocator_get(smpi_global->message_mallocator);
68 SIMIX_mutex_lock(request->mutex);
70 message->comm = request->comm;
71 message->src = request->src;
72 message->dst = request->dst;
73 message->tag = request->tag;
74 message->buf = xbt_malloc(request->datatype->size * request->count);
75 memcpy(message->buf, request->buf, request->datatype->size * request->count);
77 dhost = request->comm->hosts[request->dst];
78 drank = smpi_mpi_comm_rank(smpi_mpi_global->mpi_comm_world, dhost);
80 SIMIX_mutex_lock(smpi_global->received_message_queues_mutexes[drank]);
81 xbt_fifo_push(smpi_global->received_message_queues[drank], message);
82 SIMIX_mutex_unlock(smpi_global->received_message_queues_mutexes[drank]);
84 request->completed = 1;
86 action = SIMIX_action_communicate(shost, dhost, communicate, request->datatype->size * request->count, -1.0);
88 SIMIX_register_action_to_condition(action, request->cond);
89 SIMIX_cond_wait(request->cond, request->mutex);
90 SIMIX_unregister_action_to_condition(action, request->cond);
92 SIMIX_mutex_unlock(request->mutex);
94 SIMIX_action_destroy(action);
96 // wake up receiver if necessary
97 receiver_process = smpi_global->receiver_processes[drank];
98 if (SIMIX_process_is_suspended(receiver_process)) {
99 SIMIX_process_resume(receiver_process);
104 SIMIX_mutex_lock(smpi_global->running_hosts_count_mutex);
105 running_hosts_count = smpi_global->running_hosts_count;
106 SIMIX_mutex_unlock(smpi_global->running_hosts_count_mutex);
108 } while (0 < running_hosts_count);