-#include <stdio.h>
-#include <signal.h>
-#include <sys/time.h>
-
#include "private.h"
-
-SMPI_Global_t smpi_global = NULL;
-
-SMPI_MPI_Global_t smpi_mpi_global = NULL;
-
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi,XBT_LOG_ROOT_CAT, "All SMPI categories (see \ref SMPI_API)");
-
-int inline smpi_mpi_comm_size(smpi_mpi_communicator_t *comm)
-{
- return comm->size;
+#include "xbt/time.h"
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_base, smpi,
+ "Logging specific to SMPI (base)");
+XBT_LOG_EXTERNAL_CATEGORY(smpi_base);
+XBT_LOG_EXTERNAL_CATEGORY(smpi_bench);
+XBT_LOG_EXTERNAL_CATEGORY(smpi_kernel);
+XBT_LOG_EXTERNAL_CATEGORY(smpi_mpi);
+XBT_LOG_EXTERNAL_CATEGORY(smpi_mpi_dt);
+XBT_LOG_EXTERNAL_CATEGORY(smpi_coll);
+XBT_LOG_EXTERNAL_CATEGORY(smpi_receiver);
+XBT_LOG_EXTERNAL_CATEGORY(smpi_sender);
+XBT_LOG_EXTERNAL_CATEGORY(smpi_util);
+
+void smpi_process_init(int* argc, char*** argv) {
+ int index;
+ smpi_process_data_t data;
+ smx_process_t proc;
+
+ proc = SIMIX_process_self();
+ index = atoi((*argv)[1]);
+ free((*argv)[1]);
+ data = smpi_process_remote_data(index);
+ SIMIX_process_set_data(proc, data);
+ if (*argc > 2) {
+ memmove(&(*argv)[1], &(*argv)[2], sizeof(char *) * (*argc - 2));
+ (*argv)[(*argc) - 1] = NULL;
+ }
+ (*argc)--;
+ DEBUG2("<%d> New process in the game: %p", index, proc);
}
-// FIXME: smarter algorithm?
-int smpi_mpi_comm_rank(smpi_mpi_communicator_t *comm, smx_host_t host)
-{
- int i;
-
- for(i = comm->size - 1; i > 0 && host != comm->simdata->hosts[i]; i--);
+void smpi_process_destroy(void) {
+ int index = smpi_process_index();
- return i;
+ DEBUG1("<%d> Process left the game", index);
}
-int inline smpi_mpi_comm_rank_self(smpi_mpi_communicator_t *comm)
-{
- return smpi_mpi_comm_rank(comm, SIMIX_host_self());
+/* MPI Low level calls */
+MPI_Request smpi_mpi_isend(void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm) {
+ MPI_Request request;
+
+ request = xbt_new(s_smpi_mpi_request_t, 1);
+ request->comm = comm;
+ request->src = smpi_comm_rank(comm);
+ request->dst = dst;
+ request->tag = tag;
+ request->size = smpi_datatype_size(datatype) * count;
+ request->complete = 0;
+ smpi_process_post_send(comm, request);
+ request->pair = SIMIX_network_isend(request->rdv, request->size, -1.0, buf, request->size, request);
+ return request;
}
-int smpi_sender(int argc, char **argv)
-{
- smx_process_t self;
- smx_host_t shost;
- int rank;
-
- xbt_fifo_t request_queue;
- smx_mutex_t request_queue_mutex;
- int size;
-
- int running_hosts_count;
-
- smpi_mpi_request_t *request;
-
- smx_host_t dhost;
-
- smx_action_t action;
-
- smpi_received_message_t *message;
-
- int drank;
-
- smx_process_t receiver_process;
-
- self = SIMIX_process_self();
- shost = SIMIX_host_self();
- rank = smpi_mpi_comm_rank(smpi_mpi_global->mpi_comm_world, shost);
-
- // make sure root is done before own initialization
- SIMIX_mutex_lock(smpi_global->start_stop_mutex);
- if (!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);
-
- request_queue = smpi_global->pending_send_request_queues[rank];
- request_queue_mutex = smpi_global->pending_send_request_queues_mutexes[rank];
- size = smpi_mpi_comm_size(smpi_mpi_global->mpi_comm_world);
-
- smpi_global->sender_processes[rank] = 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 {
- SIMIX_cond_broadcast(smpi_global->start_stop_cond);
- }
- SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
-
- do {
-
- SIMIX_mutex_lock(request_queue_mutex);
- request = xbt_fifo_shift(request_queue);
- SIMIX_mutex_unlock(request_queue_mutex);
-
- if (NULL == request) {
- SIMIX_process_suspend(self);
- } else {
-
- message = xbt_mallocator_get(smpi_global->message_mallocator);
-
- SIMIX_mutex_lock(request->simdata->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);
- memcpy(message->buf, request->buf, request->datatype->size * request->count);
-
- dhost = request->comm->simdata->hosts[request->dst];
- drank = smpi_mpi_comm_rank(smpi_mpi_global->mpi_comm_world, dhost);
-
- 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]);
-
- request->completed = 1;
-
- action = SIMIX_action_communicate(shost, dhost, NULL, request->datatype->size * request->count * 1.0, -1.0);
-
- SIMIX_register_action_to_condition(action, request->simdata->cond);
-
- SIMIX_cond_wait(request->simdata->cond, request->simdata->mutex);
-
- SIMIX_mutex_unlock(request->simdata->mutex);
-
- // wake up receiver if necessary
- receiver_process = smpi_global->receiver_processes[drank];
- if (SIMIX_process_is_suspended(receiver_process)) {
- SIMIX_process_resume(receiver_process);
- }
-
- }
-
- SIMIX_mutex_lock(smpi_global->running_hosts_count_mutex);
- running_hosts_count = smpi_global->running_hosts_count;
- SIMIX_mutex_unlock(smpi_global->running_hosts_count_mutex);
-
- } while (0 < running_hosts_count);
-
- SIMIX_mutex_lock(smpi_global->start_stop_mutex);
- smpi_global->ready_process_count--;
- if (smpi_global->ready_process_count == 0) {
- SIMIX_cond_broadcast(smpi_global->start_stop_cond);
- } else if (smpi_global->ready_process_count < 0) {
- // FIXME: can't happen! abort!
- }
- SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
-
- return 0;
-}
-
-int smpi_receiver(int argc, char **argv)
-{
- smx_process_t self;
- int rank;
-
- xbt_fifo_t request_queue;
- smx_mutex_t request_queue_mutex;
- xbt_fifo_t message_queue;
- smx_mutex_t message_queue_mutex;
- int size;
-
- int running_hosts_count;
-
- smpi_mpi_request_t *request;
- smpi_received_message_t *message;
-
- xbt_fifo_item_t request_item;
- xbt_fifo_item_t message_item;
-
- self = SIMIX_process_self();
- rank = smpi_mpi_comm_rank_self(smpi_mpi_global->mpi_comm_world);
-
- // make sure root is done before own initialization
- SIMIX_mutex_lock(smpi_global->start_stop_mutex);
- if (!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);
-
- request_queue = smpi_global->pending_recv_request_queues[rank];
- request_queue_mutex = smpi_global->pending_recv_request_queues_mutexes[rank];
- message_queue = smpi_global->received_message_queues[rank];
- message_queue_mutex = smpi_global->received_message_queues_mutexes[rank];
- size = smpi_mpi_comm_size(smpi_mpi_global->mpi_comm_world);
-
- smpi_global->receiver_processes[rank] = 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 {
- SIMIX_cond_broadcast(smpi_global->start_stop_cond);
- }
- SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
-
- do {
- request = NULL;
- message = NULL;
-
- // FIXME: better algorithm, maybe some kind of balanced tree? or a heap?
-
- // FIXME: not the best way to request multiple locks...
- SIMIX_mutex_lock(request_queue_mutex);
- SIMIX_mutex_lock(message_queue_mutex);
- for (request_item = xbt_fifo_get_first_item(request_queue);
- NULL != request_item;
- request_item = xbt_fifo_get_next_item(request_item)) {
- request = xbt_fifo_get_item_content(request_item);
- for (message_item = xbt_fifo_get_first_item(message_queue);
- NULL != message_item;
- message_item = xbt_fifo_get_next_item(message_item)) {
- message = xbt_fifo_get_item_content(message_item);
- if (request->comm == message->comm &&
- (MPI_ANY_SOURCE == request->src || request->src == message->src) &&
- request->tag == message->tag) {
- xbt_fifo_remove_item(request_queue, request_item);
- xbt_fifo_remove_item(message_queue, message_item);
- goto stopsearch;
- }
- }
- }
-stopsearch:
- SIMIX_mutex_unlock(message_queue_mutex);
- SIMIX_mutex_unlock(request_queue_mutex);
-
- if (NULL == request || NULL == message) {
- SIMIX_process_suspend(self);
- } else {
- SIMIX_mutex_lock(request->simdata->mutex);
-
- memcpy(request->buf, message->buf, request->datatype->size * request->count);
- request->src = message->src;
- request->completed = 1;
- SIMIX_cond_broadcast(request->simdata->cond);
-
- SIMIX_mutex_unlock(request->simdata->mutex);
-
- xbt_free(message->buf);
- xbt_mallocator_release(smpi_global->message_mallocator, message);
- }
-
- SIMIX_mutex_lock(smpi_global->running_hosts_count_mutex);
- running_hosts_count = smpi_global->running_hosts_count;
- SIMIX_mutex_unlock(smpi_global->running_hosts_count_mutex);
-
- } while (0 < running_hosts_count);
-
- SIMIX_mutex_lock(smpi_global->start_stop_mutex);
- smpi_global->ready_process_count--;
- if (smpi_global->ready_process_count == 0) {
- SIMIX_cond_broadcast(smpi_global->start_stop_cond);
- } else if (smpi_global->ready_process_count < 0) {
- // FIXME: can't happen, abort!
- }
- SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
-
- return 0;
+MPI_Request smpi_mpi_irecv(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm) {
+ MPI_Request request;
+
+ request = xbt_new(s_smpi_mpi_request_t, 1);
+ request->comm = comm;
+ request->src = src;
+ request->dst = smpi_comm_rank(comm);
+ request->tag = tag;
+ request->size = smpi_datatype_size(datatype) * count;
+ request->complete = 0;
+ smpi_process_post_recv(request);
+ request->pair = SIMIX_network_irecv(request->rdv, buf, &request->size);
+ return request;
}
-void *smpi_request_new()
-{
- smpi_mpi_request_t *request = xbt_new(smpi_mpi_request_t, 1);
+void smpi_mpi_recv(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Status* status) {
+ MPI_Request request;
- request->completed = 0;
- request->simdata = xbt_new(s_smpi_mpi_request_simdata_t, 1);
- request->simdata->mutex = SIMIX_mutex_init();
- request->simdata->cond = SIMIX_cond_init();
-
- return request;
+ request = smpi_mpi_irecv(buf, count, datatype, src, tag, comm);
+ smpi_mpi_wait(&request, status);
}
-void smpi_request_free(void *pointer)
-{
-
- smpi_mpi_request_t *request = pointer;
-
- if (NULL != request) {
- SIMIX_cond_destroy(request->simdata->cond);
- SIMIX_mutex_destroy(request->simdata->mutex);
- xbt_free(request->simdata);
- xbt_free(request);
- }
+void smpi_mpi_send(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm) {
+ MPI_Request request;
- return;
+ request = smpi_mpi_isend(buf, count, datatype, src, tag, comm);
+ smpi_mpi_wait(&request, MPI_STATUS_IGNORE);
}
-void smpi_request_reset(void *pointer)
-{
- return;
+void smpi_mpi_sendrecv(void* sendbuf, int sendcount, MPI_Datatype sendtype, int dst, int sendtag, void* recvbuf, int recvcount, MPI_Datatype recvtype, int src, int recvtag, MPI_Comm comm, MPI_Status* status) {
+ MPI_Request requests[2];
+ MPI_Status stats[2];
+
+ requests[0] = smpi_mpi_isend(sendbuf, sendcount, sendtype, dst, sendtag, comm);
+ requests[1] = smpi_mpi_irecv(recvbuf, recvcount, recvtype, src, recvtag, comm);
+ smpi_mpi_waitall(2, requests, stats);
+ if(status != MPI_STATUS_IGNORE) {
+ // Copy receive status
+ memcpy(status, &stats[1], sizeof(MPI_Status));
+ }
}
-
-void *smpi_message_new()
-{
- return xbt_new(smpi_received_message_t, 1);
+static void finish_wait(MPI_Request* request, MPI_Status* status) {
+ MPI_Request data = (MPI_Request)SIMIX_communication_get_data((*request)->pair);
+
+ xbt_assert0(data != MPI_REQUEST_NULL, "Erroneous situation");
+ if(status != MPI_STATUS_IGNORE) {
+ status->MPI_SOURCE = (*request)->src;
+ status->MPI_TAG = (*request)->tag;
+ status->MPI_ERROR = MPI_SUCCESS;
+ }
+ DEBUG3("finishing wait for %p [data = %p, complete = %d]", *request, data, data->complete);
+ // data == *request if sender is first to finish its wait
+ // data != *request if receiver is first to finish its wait
+ if(data->complete == 0) {
+ // first arrives here
+ data->complete = 1;
+ if(data != *request) {
+ // receveiver cleans its part
+ xbt_free(*request);
+ }
+ } else {
+ // second arrives here
+ if(data != *request) {
+ // receiver cleans everything
+ xbt_free(data);
+ }
+ xbt_free(*request);
+ }
+ *request = MPI_REQUEST_NULL;
}
-void smpi_message_free(void *pointer)
-{
- if (NULL != pointer) {
- xbt_free(pointer);
- }
+int smpi_mpi_test(MPI_Request* request, MPI_Status* status) {
+ MPI_Request data = (MPI_Request)SIMIX_communication_get_data((*request)->pair);
+ int flag = data && data->complete == 1;
- return;
+ if(flag) {
+ finish_wait(request, status);
+ }
+ return flag;
}
-void smpi_message_reset(void *pointer)
-{
- return;
+int smpi_mpi_testany(int count, MPI_Request requests[], int* index, MPI_Status* status) {
+ MPI_Request data;
+ int i, flag;
+
+ *index = MPI_UNDEFINED;
+ flag = 0;
+ for(i = 0; i < count; i++) {
+ if(requests[i] != MPI_REQUEST_NULL) {
+ data = (MPI_Request)SIMIX_communication_get_data(requests[i]->pair);
+ if(data != MPI_REQUEST_NULL && data->complete == 1) {
+ finish_wait(&requests[i], status);
+ *index = i;
+ flag = 1;
+ break;
+ }
+ }
+ }
+ return flag;
}
-void smpi_global_init()
-{
- int i;
-
- int size = SIMIX_host_get_number();
-
- smpi_global = xbt_new(s_SMPI_Global_t, 1);
-
- // config variable
- smpi_global->reference_speed = SMPI_DEFAULT_SPEED;
-
- smpi_global->root_ready = 0;
- smpi_global->ready_process_count = 0;
-
- // start/stop
- smpi_global->start_stop_mutex = SIMIX_mutex_init();
- smpi_global->start_stop_cond = SIMIX_cond_init();
-
- // processes
- smpi_global->sender_processes = xbt_new(smx_process_t, size);
- smpi_global->receiver_processes = xbt_new(smx_process_t, size);
-
- // running hosts
- smpi_global->running_hosts_count_mutex = SIMIX_mutex_init();
- smpi_global->running_hosts_count = 0;
-
- // mallocators
- smpi_global->request_mallocator = xbt_mallocator_new(SMPI_REQUEST_MALLOCATOR_SIZE,
- smpi_request_new, smpi_request_free, smpi_request_reset);
- smpi_global->message_mallocator = xbt_mallocator_new(SMPI_MESSAGE_MALLOCATOR_SIZE,
- smpi_message_new, smpi_message_free, smpi_message_reset);
-
- //
- smpi_global->pending_send_request_queues = xbt_new(xbt_fifo_t, size);
- smpi_global->pending_send_request_queues_mutexes = xbt_new(smx_mutex_t, size);
- smpi_global->pending_recv_request_queues = xbt_new(xbt_fifo_t, size);
- smpi_global->pending_recv_request_queues_mutexes = xbt_new(smx_mutex_t, size);
- smpi_global->received_message_queues = xbt_new(xbt_fifo_t, size);
- smpi_global->received_message_queues_mutexes = xbt_new(smx_mutex_t, size);
- smpi_global->timers = xbt_new(xbt_os_timer_t, size);
- smpi_global->timers_mutexes = xbt_new(smx_mutex_t, size);
-
- for(i = 0; i < size; i++) {
- smpi_global->pending_send_request_queues[i] = xbt_fifo_new();
- smpi_global->pending_send_request_queues_mutexes[i] = SIMIX_mutex_init();
- smpi_global->pending_recv_request_queues[i] = xbt_fifo_new();
- smpi_global->pending_recv_request_queues_mutexes[i] = SIMIX_mutex_init();
- smpi_global->received_message_queues[i] = xbt_fifo_new();
- smpi_global->received_message_queues_mutexes[i] = SIMIX_mutex_init();
- smpi_global->timers[i] = xbt_os_timer_new();
- smpi_global->timers_mutexes[i] = SIMIX_mutex_init();
- }
+void smpi_mpi_wait(MPI_Request* request, MPI_Status* status) {
+ MPI_Request data = (MPI_Request)SIMIX_communication_get_data((*request)->pair);
+ DEBUG6("wait for request %p (%p: %p) [src = %d, dst = %d, tag = %d]",
+ *request, (*request)->pair, data, (*request)->src, (*request)->dst, (*request)->tag);
+ // data is null if receiver waits before sender enters the rdv
+ if(data == MPI_REQUEST_NULL || data->complete == 0) {
+ SIMIX_network_wait((*request)->pair, -1.0);
+ }
+ finish_wait(request, status);
}
-void smpi_global_destroy()
-{
- int i;
-
- int size = SIMIX_host_get_number();
-
- // start/stop
- SIMIX_mutex_destroy(smpi_global->start_stop_mutex);
- SIMIX_cond_destroy(smpi_global->start_stop_cond);
-
- // processes
- xbt_free(smpi_global->sender_processes);
- xbt_free(smpi_global->receiver_processes);
-
- // running hosts
- SIMIX_mutex_destroy(smpi_global->running_hosts_count_mutex);
-
- // mallocators
- xbt_mallocator_free(smpi_global->request_mallocator);
- xbt_mallocator_free(smpi_global->message_mallocator);
-
- for(i = 0; i < size; i++) {
- xbt_fifo_free(smpi_global->pending_send_request_queues[i]);
- SIMIX_mutex_destroy(smpi_global->pending_send_request_queues_mutexes[i]);
- xbt_fifo_free(smpi_global->pending_recv_request_queues[i]);
- SIMIX_mutex_destroy(smpi_global->pending_recv_request_queues_mutexes[i]);
- xbt_fifo_free(smpi_global->received_message_queues[i]);
- SIMIX_mutex_destroy(smpi_global->received_message_queues_mutexes[i]);
- xbt_os_timer_free(smpi_global->timers[i]);
- SIMIX_mutex_destroy(smpi_global->timers_mutexes[i]);
- }
-
- xbt_free(smpi_global->pending_send_request_queues);
- xbt_free(smpi_global->pending_send_request_queues_mutexes);
- xbt_free(smpi_global->pending_recv_request_queues);
- xbt_free(smpi_global->pending_recv_request_queues_mutexes);
- xbt_free(smpi_global->received_message_queues);
- xbt_free(smpi_global->received_message_queues_mutexes);
- xbt_free(smpi_global->timers);
- xbt_free(smpi_global->timers_mutexes);
-
- xbt_free(smpi_global);
+int smpi_mpi_waitany(int count, MPI_Request requests[], MPI_Status* status) {
+ xbt_dynar_t comms;
+ MPI_Request data;
+ int i, size, index;
+ int* map;
+
+ index = MPI_UNDEFINED;
+ if(count > 0) {
+ // First check for already completed requests
+ for(i = 0; i < count; i++) {
+ if(requests[i] != MPI_REQUEST_NULL) {
+ data = (MPI_Request)SIMIX_communication_get_data(requests[i]->pair);
+ if(data != MPI_REQUEST_NULL && data->complete == 1) {
+ index = i;
+ break;
+ }
+ }
+ }
+ if(index == MPI_UNDEFINED) {
+ // Otherwise, wait for a request to complete
+ comms = xbt_dynar_new(sizeof(smx_comm_t), NULL);
+ map = xbt_new(int, count);
+ size = 0;
+ DEBUG0("Wait for one of");
+ for(i = 0; i < count; i++) {
+ if(requests[i] != MPI_REQUEST_NULL && requests[i]->complete == 0) {
+ DEBUG4(" request %p [src = %d, dst = %d, tag = %d]",
+ requests[i], requests[i]->src, requests[i]->dst, requests[i]->tag);
+ xbt_dynar_push(comms, &requests[i]->pair);
+ map[size] = i;
+ size++;
+ }
+ }
+ if(size > 0) {
+ index = SIMIX_network_waitany(comms);
+ index = map[index];
+ }
+ xbt_free(map);
+ xbt_dynar_free_container(&comms);
+ }
+ if(index != MPI_UNDEFINED) {
+ finish_wait(&requests[index], status);
+ }
+ }
+ return index;
}
-int smpi_run_simulation(int argc, char **argv)
-{
- xbt_fifo_item_t cond_item = NULL;
- smx_cond_t cond = NULL;
- smx_action_t action = NULL;
-
- xbt_fifo_t actions_failed = xbt_fifo_new();
- xbt_fifo_t actions_done = xbt_fifo_new();
-
- srand(SMPI_RAND_SEED);
-
- SIMIX_global_init(&argc, argv);
-
- SIMIX_function_register("smpi_simulated_main", smpi_simulated_main);
- SIMIX_function_register("smpi_sender", smpi_sender);
- SIMIX_function_register("smpi_receiver", smpi_receiver);
-
- // FIXME: ought to verify these files...
- SIMIX_create_environment(argv[1]);
-
- // must initialize globals between creating environment and launching app....
- smpi_global_init();
-
- SIMIX_launch_application(argv[2]);
-
- /* Prepare to display some more info when dying on Ctrl-C pressing */
- // FIXME: doesn't work
- //signal(SIGINT, inthandler);
-
- /* Clean IO before the run */
- fflush(stdout);
- fflush(stderr);
-
- while (SIMIX_solve(actions_done, actions_failed) != -1.0) {
- while ((action = xbt_fifo_pop(actions_failed))) {
- DEBUG1("** %s failed **", action->name);
- xbt_fifo_foreach(action->cond_list, cond_item, cond, smx_cond_t) {
- SIMIX_cond_broadcast(cond);
- SIMIX_unregister_action_to_condition(action, cond);
- }
- SIMIX_action_destroy(action);
- }
- while ((action = xbt_fifo_pop(actions_done))) {
- DEBUG1("** %s done **",action->name);
- xbt_fifo_foreach(action->cond_list, cond_item, cond, smx_cond_t) {
- SIMIX_cond_broadcast(cond);
- SIMIX_unregister_action_to_condition(action, cond);
- }
- SIMIX_action_destroy(action);
- }
- }
-
- xbt_fifo_free(actions_failed);
- xbt_fifo_free(actions_done);
-
- INFO1("simulation time %g", SIMIX_get_clock());
-
- smpi_global_destroy();
-
- SIMIX_clean();
-
- return 0;
-}
-
-void smpi_mpi_land_func(void *x, void *y, void *z)
-{
- *(int *)z = *(int *)x && *(int *)y;
-}
-
-void smpi_mpi_sum_func(void *x, void *y, void *z)
-{
- *(int *)z = *(int *)x + *(int *)y;
-}
-
-
-void smpi_mpi_init()
-{
- smx_process_t process;
- smx_host_t host;
- smx_host_t *hosts;
- int size;
-
- SIMIX_mutex_lock(smpi_global->running_hosts_count_mutex);
- smpi_global->running_hosts_count++;
- SIMIX_mutex_unlock(smpi_global->running_hosts_count_mutex);
-
- // initialize some local variables
- process = SIMIX_process_self();
- host = SIMIX_host_self();
- hosts = SIMIX_host_get_table();
- size = SIMIX_host_get_number();
-
- // node 0 sets the globals
- if (host == hosts[0]) {
-
- smpi_mpi_global = xbt_new(s_SMPI_MPI_Global_t, 1);
-
- // global communicator
- smpi_mpi_global->mpi_comm_world = xbt_new(smpi_mpi_communicator_t, 1);
- smpi_mpi_global->mpi_comm_world->size = size;
- smpi_mpi_global->mpi_comm_world->simdata = xbt_new(s_smpi_mpi_communicator_simdata_t, 1);
- smpi_mpi_global->mpi_comm_world->simdata->barrier_count = 0;
- smpi_mpi_global->mpi_comm_world->simdata->barrier_mutex = SIMIX_mutex_init();
- smpi_mpi_global->mpi_comm_world->simdata->barrier_cond = SIMIX_cond_init();
- smpi_mpi_global->mpi_comm_world->simdata->hosts = hosts;
- smpi_mpi_global->mpi_comm_world->simdata->processes = xbt_new(smx_process_t, size);
- smpi_mpi_global->mpi_comm_world->simdata->processes[0] = process;
-
- // mpi datatypes
- smpi_mpi_global->mpi_byte = xbt_new(smpi_mpi_datatype_t, 1);
- smpi_mpi_global->mpi_byte->size = (size_t)1;
- smpi_mpi_global->mpi_int = xbt_new(smpi_mpi_datatype_t, 1);
- smpi_mpi_global->mpi_int->size = sizeof(int);
- smpi_mpi_global->mpi_double = xbt_new(smpi_mpi_datatype_t, 1);
- smpi_mpi_global->mpi_double->size = sizeof(double);
-
- // mpi operations
- smpi_mpi_global->mpi_land = xbt_new(smpi_mpi_op_t, 1);
- smpi_mpi_global->mpi_land->func = smpi_mpi_land_func;
- smpi_mpi_global->mpi_sum = xbt_new(smpi_mpi_op_t, 1);
- smpi_mpi_global->mpi_sum->func = smpi_mpi_sum_func;
-
- // signal all nodes to perform initialization
- SIMIX_mutex_lock(smpi_global->start_stop_mutex);
- smpi_global->root_ready = 1;
- SIMIX_cond_broadcast(smpi_global->start_stop_cond);
- SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
-
- } else {
-
- // make sure root is done before own initialization
- SIMIX_mutex_lock(smpi_global->start_stop_mutex);
- if (!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);
-
- smpi_mpi_global->mpi_comm_world->simdata->processes[smpi_mpi_comm_rank_self(smpi_mpi_global->mpi_comm_world)] = process;
- }
-
- // 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 {
- SIMIX_cond_broadcast(smpi_global->start_stop_cond);
- }
- SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
-
- return;
-}
-
-void smpi_mpi_finalize()
-{
- int i;
-
- SIMIX_mutex_lock(smpi_global->running_hosts_count_mutex);
- i = --smpi_global->running_hosts_count;
- SIMIX_mutex_unlock(smpi_global->running_hosts_count_mutex);
-
- SIMIX_mutex_lock(smpi_global->start_stop_mutex);
- smpi_global->ready_process_count--;
- SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
-
- if (0 >= i) {
-
- // wake up senders/receivers
- for (i = 0; i < smpi_mpi_global->mpi_comm_world->size; i++) {
- if (SIMIX_process_is_suspended(smpi_global->sender_processes[i])) {
- SIMIX_process_resume(smpi_global->sender_processes[i]);
- }
- if (SIMIX_process_is_suspended(smpi_global->receiver_processes[i])) {
- SIMIX_process_resume(smpi_global->receiver_processes[i]);
- }
- }
-
- // wait for senders/receivers to exit...
- SIMIX_mutex_lock(smpi_global->start_stop_mutex);
- if (smpi_global->ready_process_count > 0) {
- SIMIX_cond_wait(smpi_global->start_stop_cond, smpi_global->start_stop_mutex);
- }
- SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
-
- SIMIX_mutex_destroy(smpi_mpi_global->mpi_comm_world->simdata->barrier_mutex);
- SIMIX_cond_destroy(smpi_mpi_global->mpi_comm_world->simdata->barrier_cond);
- xbt_free(smpi_mpi_global->mpi_comm_world->simdata->processes);
- xbt_free(smpi_mpi_global->mpi_comm_world->simdata);
- xbt_free(smpi_mpi_global->mpi_comm_world);
-
- xbt_free(smpi_mpi_global->mpi_byte);
- xbt_free(smpi_mpi_global->mpi_int);
- xbt_free(smpi_mpi_global->mpi_double);
-
- xbt_free(smpi_mpi_global->mpi_land);
- xbt_free(smpi_mpi_global->mpi_sum);
-
- xbt_free(smpi_mpi_global);
- }
-
+void smpi_mpi_waitall(int count, MPI_Request requests[], MPI_Status status[]) {
+ int index;
+ MPI_Status stat;
+
+ while(count > 0) {
+ index = smpi_mpi_waitany(count, requests, &stat);
+ if(index == MPI_UNDEFINED) {
+ break;
+ }
+ if(status != MPI_STATUS_IGNORE) {
+ memcpy(&status[index], &stat, sizeof(stat));
+ }
+ // Move the last request to the found position
+ requests[index] = requests[count - 1];
+ requests[count - 1] = MPI_REQUEST_NULL;
+ count--;
+ }
}
-// FIXME: could cause trouble with multithreaded procs on same host...
-void smpi_bench_begin()
-{
- int rank = smpi_mpi_comm_rank_self(smpi_mpi_global->mpi_comm_world);
- SIMIX_mutex_lock(smpi_global->timers_mutexes[rank]);
- xbt_os_timer_start(smpi_global->timers[rank]);
- return;
+int smpi_mpi_waitsome(int incount, MPI_Request requests[], int* indices, MPI_Status status[]) {
+ MPI_Request data;
+ int i, count;
+
+ count = 0;
+ for(i = 0; i < count; i++) {
+ if(requests[i] != MPI_REQUEST_NULL) {
+ data = (MPI_Request)SIMIX_communication_get_data(requests[i]->pair);
+ if(data != MPI_REQUEST_NULL && data->complete == 1) {
+ finish_wait(&requests[i], status != MPI_STATUS_IGNORE ? &status[i] : MPI_STATUS_IGNORE);
+ indices[count] = i;
+ count++;
+ }
+ }
+ }
+ return count;
}
-void smpi_bench_end()
-{
- int rank = smpi_mpi_comm_rank_self(smpi_mpi_global->mpi_comm_world);
- double duration;
- smx_host_t host;
- smx_action_t compute_action;
- smx_mutex_t mutex;
- smx_cond_t cond;
-
- xbt_os_timer_stop(smpi_global->timers[rank]);
-
- duration = xbt_os_timer_elapsed(smpi_global->timers[rank]);
- SIMIX_mutex_unlock(smpi_global->timers_mutexes[rank]);
-
- host = smpi_mpi_global->mpi_comm_world->simdata->hosts[rank];
- compute_action = SIMIX_action_execute(host, NULL, duration * SMPI_DEFAULT_SPEED);
- mutex = SIMIX_mutex_init();
- cond = SIMIX_cond_init();
-
- SIMIX_mutex_lock(mutex);
- SIMIX_register_action_to_condition(compute_action, cond);
- SIMIX_cond_wait(cond, mutex);
- //SIMIX_unregister_action_to_condition(compute_action, cond);
- SIMIX_mutex_unlock(mutex);
-
- SIMIX_mutex_destroy(mutex);
- SIMIX_cond_destroy(cond);
-
- // FIXME: check for success/failure?
-
- return;
+void smpi_mpi_bcast(void* buf, int count, MPI_Datatype datatype, int root, MPI_Comm comm) {
+ // arity=2: a binary tree, arity=4 seem to be a good setting (see P2P-MPI))
+ nary_tree_bcast(buf, count, datatype, root, comm, 4);
}
-void smpi_barrier(smpi_mpi_communicator_t *comm)
-{
-
- SIMIX_mutex_lock(comm->simdata->barrier_mutex);
- if(++comm->simdata->barrier_count < comm->size) {
- SIMIX_cond_wait(comm->simdata->barrier_cond, comm->simdata->barrier_mutex);
- } else {
- comm->simdata->barrier_count = 0;
- SIMIX_cond_broadcast(comm->simdata->barrier_cond);
- }
- SIMIX_mutex_unlock(comm->simdata->barrier_mutex);
-
- return;
+void smpi_mpi_barrier(MPI_Comm comm) {
+ // arity=2: a binary tree, arity=4 seem to be a good setting (see P2P-MPI))
+ nary_tree_barrier(comm, 4);
}
-// FIXME: smarter algorithm...
-int smpi_comm_rank(smpi_mpi_communicator_t *comm, smx_host_t host)
-{
- int i;
- for(i = 0; i < comm->size && host != comm->simdata->hosts[i]; i++);
- if (i >= comm->size) i = -1;
- return i;
+void smpi_mpi_gather(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm) {
+ int system_tag = 666;
+ int rank, size, src, index, sendsize, recvsize;
+ MPI_Request* requests;
+
+ rank = smpi_comm_rank(comm);
+ size = smpi_comm_size(comm);
+ if(rank != root) {
+ // Send buffer to root
+ smpi_mpi_send(sendbuf, sendcount, sendtype, root, system_tag, comm);
+ } else {
+ sendsize = smpi_datatype_size(sendtype);
+ recvsize = smpi_datatype_size(recvtype);
+ // Local copy from root
+ memcpy(&((char*)recvbuf)[root * recvcount * recvsize], sendbuf, sendcount * sendsize * sizeof(char));
+ // Receive buffers from senders
+ requests = xbt_new(MPI_Request, size - 1);
+ index = 0;
+ for(src = 0; src < size; src++) {
+ if(src != root) {
+ requests[index] = smpi_mpi_irecv(&((char*)recvbuf)[src * recvcount * recvsize], recvcount, recvtype, src, system_tag, comm);
+ index++;
+ }
+ }
+ // Wait for completion of irecv's.
+ smpi_mpi_waitall(size - 1, requests, MPI_STATUS_IGNORE);
+ xbt_free(requests);
+ }
}
-int smpi_create_request(void *buf, int count, smpi_mpi_datatype_t *datatype,
- int src, int dst, int tag, smpi_mpi_communicator_t *comm, smpi_mpi_request_t **request)
-{
- int retval = MPI_SUCCESS;
-
- *request = NULL;
-
- if (0 > count) {
- retval = MPI_ERR_COUNT;
- } else if (NULL == buf) {
- retval = MPI_ERR_INTERN;
- } else if (NULL == datatype) {
- retval = MPI_ERR_TYPE;
- } else if (NULL == comm) {
- retval = MPI_ERR_COMM;
- } else if (MPI_ANY_SOURCE != src && (0 > src || comm->size <= src)) {
- retval = MPI_ERR_RANK;
- } else if (0 > dst || comm->size <= dst) {
- retval = MPI_ERR_RANK;
- } else if (0 > tag) {
- retval = MPI_ERR_TAG;
- } else {
- *request = xbt_mallocator_get(smpi_global->request_mallocator);
- (*request)->comm = comm;
- (*request)->src = src;
- (*request)->dst = dst;
- (*request)->tag = tag;
- (*request)->buf = buf;
- (*request)->count = count;
- (*request)->datatype = datatype;
- }
- return retval;
+void smpi_mpi_gatherv(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int* recvcounts, int* displs, MPI_Datatype recvtype, int root, MPI_Comm comm) {
+ int system_tag = 666;
+ int rank, size, src, index, sendsize;
+ MPI_Request* requests;
+
+ rank = smpi_comm_rank(comm);
+ size = smpi_comm_size(comm);
+ if(rank != root) {
+ // Send buffer to root
+ smpi_mpi_send(sendbuf, sendcount, sendtype, root, system_tag, comm);
+ } else {
+ sendsize = smpi_datatype_size(sendtype);
+ // Local copy from root
+ memcpy(&((char*)recvbuf)[displs[root]], sendbuf, sendcount * sendsize * sizeof(char));
+ // Receive buffers from senders
+ requests = xbt_new(MPI_Request, size - 1);
+ index = 0;
+ for(src = 0; src < size; src++) {
+ if(src != root) {
+ requests[index] = smpi_mpi_irecv(&((char*)recvbuf)[displs[src]], recvcounts[src], recvtype, src, system_tag, comm);
+ index++;
+ }
+ }
+ // Wait for completion of irecv's.
+ smpi_mpi_waitall(size - 1, requests, MPI_STATUS_IGNORE);
+ xbt_free(requests);
+ }
}
-int smpi_isend(smpi_mpi_request_t *request)
-{
- int retval = MPI_SUCCESS;
- int rank = smpi_mpi_comm_rank_self(smpi_mpi_global->mpi_comm_world);
-
- if (NULL != request) {
- SIMIX_mutex_lock(smpi_global->pending_send_request_queues_mutexes[rank]);
- xbt_fifo_push(smpi_global->pending_send_request_queues[rank], request);
- SIMIX_mutex_unlock(smpi_global->pending_send_request_queues_mutexes[rank]);
- }
-
- if (SIMIX_process_is_suspended(smpi_global->sender_processes[rank])) {
- SIMIX_process_resume(smpi_global->sender_processes[rank]);
- }
-
- return retval;
+void smpi_mpi_allgather(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm) {
+ int system_tag = 666;
+ int rank, size, other, index, sendsize, recvsize;
+ MPI_Request* requests;
+
+ rank = smpi_comm_rank(comm);
+ size = smpi_comm_size(comm);
+ sendsize = smpi_datatype_size(sendtype);
+ recvsize = smpi_datatype_size(recvtype);
+ // Local copy from self
+ memcpy(&((char*)recvbuf)[rank * recvcount * recvsize], sendbuf, sendcount * sendsize * sizeof(char));
+ // Send/Recv buffers to/from others;
+ requests = xbt_new(MPI_Request, 2 * (size - 1));
+ index = 0;
+ for(other = 0; other < size; other++) {
+ if(other != rank) {
+ requests[index] = smpi_mpi_isend(sendbuf, sendcount, sendtype, other, system_tag, comm);
+ index++;
+ requests[index] = smpi_mpi_irecv(&((char*)recvbuf)[other * recvcount * recvsize], recvcount, recvtype, other, system_tag, comm);
+ index++;
+ }
+ }
+ // Wait for completion of all comms.
+ smpi_mpi_waitall(2 * (size - 1), requests, MPI_STATUS_IGNORE);
+ xbt_free(requests);
}
-int smpi_irecv(smpi_mpi_request_t *request)
-{
- int retval = MPI_SUCCESS;
- int rank = smpi_mpi_comm_rank_self(smpi_mpi_global->mpi_comm_world);
-
- if (NULL != request) {
- SIMIX_mutex_lock(smpi_global->pending_recv_request_queues_mutexes[rank]);
- xbt_fifo_push(smpi_global->pending_recv_request_queues[rank], request);
- SIMIX_mutex_unlock(smpi_global->pending_recv_request_queues_mutexes[rank]);
- }
-
- if (SIMIX_process_is_suspended(smpi_global->receiver_processes[rank])) {
- SIMIX_process_resume(smpi_global->receiver_processes[rank]);
- }
-
- return retval;
+void smpi_mpi_allgatherv(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int* recvcounts, int* displs, MPI_Datatype recvtype, MPI_Comm comm) {
+ int system_tag = 666;
+ int rank, size, other, index, sendsize, recvsize;
+ MPI_Request* requests;
+
+ rank = smpi_comm_rank(comm);
+ size = smpi_comm_size(comm);
+ sendsize = smpi_datatype_size(sendtype);
+ recvsize = smpi_datatype_size(recvtype);
+ // Local copy from self
+ memcpy(&((char*)recvbuf)[displs[rank]], sendbuf, sendcount * sendsize * sizeof(char));
+ // Send buffers to others;
+ requests = xbt_new(MPI_Request, 2 * (size - 1));
+ index = 0;
+ for(other = 0; other < size; other++) {
+ if(other != rank) {
+ requests[index] = smpi_mpi_isend(sendbuf, sendcount, sendtype, other, system_tag, comm);
+ index++;
+ requests[index] = smpi_mpi_irecv(&((char*)recvbuf)[displs[other]], recvcounts[other], recvtype, other, system_tag, comm);
+ index++;
+ }
+ }
+ // Wait for completion of all comms.
+ smpi_mpi_waitall(2 * (size - 1), requests, MPI_STATUS_IGNORE);
+ xbt_free(requests);
}
-void smpi_wait(smpi_mpi_request_t *request, smpi_mpi_status_t *status)
-{
- if (NULL != request) {
- SIMIX_mutex_lock(request->simdata->mutex);
- if (!request->completed) {
- SIMIX_cond_wait(request->simdata->cond, request->simdata->mutex);
- }
- if (NULL != status) {
- status->MPI_SOURCE = request->src;
- }
- SIMIX_mutex_unlock(request->simdata->mutex);
- }
+void smpi_mpi_scatter(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm) {
+ int system_tag = 666;
+ int rank, size, dst, index, sendsize, recvsize;
+ MPI_Request* requests;
+
+ rank = smpi_comm_rank(comm);
+ size = smpi_comm_size(comm);
+ if(rank != root) {
+ // Recv buffer from root
+ smpi_mpi_recv(recvbuf, recvcount, recvtype, root, system_tag, comm, MPI_STATUS_IGNORE);
+ } else {
+ sendsize = smpi_datatype_size(sendtype);
+ recvsize = smpi_datatype_size(recvtype);
+ // Local copy from root
+ memcpy(recvbuf, &((char*)sendbuf)[root * sendcount * sendsize], recvcount * recvsize * sizeof(char));
+ // Send buffers to receivers
+ requests = xbt_new(MPI_Request, size - 1);
+ index = 0;
+ for(dst = 0; dst < size; dst++) {
+ if(dst != root) {
+ requests[index] = smpi_mpi_isend(&((char*)sendbuf)[dst * sendcount * sendsize], sendcount, sendtype, dst, system_tag, comm);
+ index++;
+ }
+ }
+ // Wait for completion of isend's.
+ smpi_mpi_waitall(size - 1, requests, MPI_STATUS_IGNORE);
+ xbt_free(requests);
+ }
}
-// FIXME: move into own file
-int smpi_gettimeofday(struct timeval *tv, struct timezone *tz)
-{
- double now;
- int retval = 0;
- smpi_bench_end();
- if (NULL == tv) {
- retval = -1;
- } else {
- now = SIMIX_get_clock();
- tv->tv_sec = now;
- tv->tv_usec = ((now - (double)tv->tv_sec) * 1000000.0);
- }
- smpi_bench_begin();
- return retval;
+void smpi_mpi_scatterv(void* sendbuf, int* sendcounts, int* displs, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm) {
+ int system_tag = 666;
+ int rank, size, dst, index, sendsize, recvsize;
+ MPI_Request* requests;
+
+ rank = smpi_comm_rank(comm);
+ size = smpi_comm_size(comm);
+ if(rank != root) {
+ // Recv buffer from root
+ smpi_mpi_recv(recvbuf, recvcount, recvtype, root, system_tag, comm, MPI_STATUS_IGNORE);
+ } else {
+ sendsize = smpi_datatype_size(sendtype);
+ recvsize = smpi_datatype_size(recvtype);
+ // Local copy from root
+ memcpy(recvbuf, &((char*)sendbuf)[displs[root]], recvcount * recvsize * sizeof(char));
+ // Send buffers to receivers
+ requests = xbt_new(MPI_Request, size - 1);
+ index = 0;
+ for(dst = 0; dst < size; dst++) {
+ if(dst != root) {
+ requests[index] = smpi_mpi_isend(&((char*)sendbuf)[displs[dst]], sendcounts[dst], sendtype, dst, system_tag, comm);
+ index++;
+ }
+ }
+ // Wait for completion of isend's.
+ smpi_mpi_waitall(size - 1, requests, MPI_STATUS_IGNORE);
+ xbt_free(requests);
+ }
}
-unsigned int smpi_sleep(unsigned int seconds)
-{
- smx_mutex_t mutex;
- smx_cond_t cond;
- smx_host_t host;
- smx_action_t sleep_action;
-
- smpi_bench_end();
- host = SIMIX_host_self();
- sleep_action = SIMIX_action_sleep(host, seconds);
- mutex = SIMIX_mutex_init();
- cond = SIMIX_cond_init();
-
- SIMIX_mutex_lock(mutex);
- SIMIX_register_action_to_condition(sleep_action, cond);
- SIMIX_cond_wait(cond, mutex);
- //SIMIX_unregister_action_to_condition(sleep_action, cond);
- SIMIX_mutex_unlock(mutex);
-
- SIMIX_mutex_destroy(mutex);
- SIMIX_cond_destroy(cond);
-
- // FIXME: check for success/failure?
-
- smpi_bench_begin();
- return 0;
+void smpi_mpi_reduce(void* sendbuf, void* recvbuf, int count, MPI_Datatype datatype, MPI_Op op, int root, MPI_Comm comm) {
+ int system_tag = 666;
+ int rank, size, src, index, datasize;
+ MPI_Request* requests;
+ void** tmpbufs;
+
+ rank = smpi_comm_rank(comm);
+ size = smpi_comm_size(comm);
+ if(rank != root) {
+ // Send buffer to root
+ smpi_mpi_send(sendbuf, count, datatype, root, system_tag, comm);
+ } else {
+ datasize = smpi_datatype_size(datatype);
+ // Local copy from root
+ memcpy(recvbuf, sendbuf, count * datasize * sizeof(char));
+ // Receive buffers from senders
+ //TODO: make a MPI_barrier here ?
+ requests = xbt_new(MPI_Request, size - 1);
+ tmpbufs = xbt_new(void*, size - 1);
+ index = 0;
+ for(src = 0; src < size; src++) {
+ if(src != root) {
+ tmpbufs[index] = xbt_malloc(count * datasize);
+ requests[index] = smpi_mpi_irecv(tmpbufs[index], count, datatype, src, system_tag, comm);
+ index++;
+ }
+ }
+ // Wait for completion of irecv's.
+ for(src = 0; src < size - 1; src++) {
+ index = smpi_mpi_waitany(size - 1, requests, MPI_STATUS_IGNORE);
+ if(index == MPI_UNDEFINED) {
+ break;
+ }
+ smpi_op_apply(op, tmpbufs[index], recvbuf, &count, &datatype);
+ }
+ for(index = 0; index < size - 1; index++) {
+ xbt_free(tmpbufs[index]);
+ }
+ xbt_free(tmpbufs);
+ xbt_free(requests);
+ }
}
-void smpi_exit(int status)
-{
- smpi_bench_end();
- SIMIX_mutex_lock(smpi_global->running_hosts_count_mutex);
- smpi_global->running_hosts_count--;
- SIMIX_mutex_unlock(smpi_global->running_hosts_count_mutex);
- SIMIX_process_kill(SIMIX_process_self());
- return;
+void smpi_mpi_allreduce(void* sendbuf, void* recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm) {
+ smpi_mpi_reduce(sendbuf, recvbuf, count, datatype, op, 0, comm);
+ smpi_mpi_bcast(recvbuf, count, datatype, 0, comm);
+
+/*
+FIXME: buggy implementation
+
+ int system_tag = 666;
+ int rank, size, other, index, datasize;
+ MPI_Request* requests;
+ void** tmpbufs;
+
+ rank = smpi_comm_rank(comm);
+ size = smpi_comm_size(comm);
+ datasize = smpi_datatype_size(datatype);
+ // Local copy from self
+ memcpy(recvbuf, sendbuf, count * datasize * sizeof(char));
+ // Send/Recv buffers to/from others;
+ //TODO: make a MPI_barrier here ?
+ requests = xbt_new(MPI_Request, 2 * (size - 1));
+ tmpbufs = xbt_new(void*, size - 1);
+ index = 0;
+ for(other = 0; other < size; other++) {
+ if(other != rank) {
+ tmpbufs[index / 2] = xbt_malloc(count * datasize);
+ requests[index] = smpi_mpi_isend(sendbuf, count, datatype, other, system_tag, comm);
+ requests[index + 1] = smpi_mpi_irecv(tmpbufs[index / 2], count, datatype, other, system_tag, comm);
+ index += 2;
+ }
+ }
+ // Wait for completion of all comms.
+ for(other = 0; other < 2 * (size - 1); other++) {
+ index = smpi_mpi_waitany(size - 1, requests, MPI_STATUS_IGNORE);
+ if(index == MPI_UNDEFINED) {
+ break;
+ }
+ if((index & 1) == 1) {
+ // Request is odd: it's a irecv
+ smpi_op_apply(op, tmpbufs[index / 2], recvbuf, &count, &datatype);
+ }
+ }
+ for(index = 0; index < size - 1; index++) {
+ xbt_free(tmpbufs[index]);
+ }
+ xbt_free(tmpbufs);
+ xbt_free(requests);
+*/
}
