- 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->barrier_count = 0;
- smpi_mpi_global->mpi_comm_world->barrier_mutex = SIMIX_mutex_init();
- smpi_mpi_global->mpi_comm_world->barrier_cond = SIMIX_cond_init();
- smpi_mpi_global->mpi_comm_world->hosts = hosts;
- smpi_mpi_global->mpi_comm_world->processes = xbt_new(smx_process_t, size);
- smpi_mpi_global->mpi_comm_world->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->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->barrier_mutex);
- SIMIX_cond_destroy(smpi_mpi_global->mpi_comm_world->barrier_cond);
- xbt_free(smpi_mpi_global->mpi_comm_world->processes);
- 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);
- }
-
-}
-
-// 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;
-}
-
-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->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_barrier(smpi_mpi_communicator_t *comm)
-{
-
- SIMIX_mutex_lock(comm->barrier_mutex);
- if(++comm->barrier_count < comm->size) {
- SIMIX_cond_wait(comm->barrier_cond, comm->barrier_mutex);
- } else {
- comm->barrier_count = 0;
- SIMIX_cond_broadcast(comm->barrier_cond);
- }
- SIMIX_mutex_unlock(comm->barrier_mutex);
-
- return;
-}
-
-// 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->hosts[i]; i++);
- if (i >= comm->size) i = -1;
- return i;
-}
-
-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;
-}
-
-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;
-}
-
-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_wait(smpi_mpi_request_t *request, smpi_mpi_status_t *status)
-{
- if (NULL != request) {
- SIMIX_mutex_lock(request->mutex);
- if (!request->completed) {
- SIMIX_cond_wait(request->cond, request->mutex);
- }
- if (NULL != status) {
- status->MPI_SOURCE = request->src;
- }
- SIMIX_mutex_unlock(request->mutex);
- }
-}
-
-// 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;
-}
-
-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_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;