3 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_base, smpi, "Logging specific to SMPI (base)");
4 XBT_LOG_EXTERNAL_CATEGORY(smpi_base);
5 XBT_LOG_EXTERNAL_CATEGORY(smpi_bench);
6 XBT_LOG_EXTERNAL_CATEGORY(smpi_kernel);
7 XBT_LOG_EXTERNAL_CATEGORY(smpi_mpi);
8 XBT_LOG_EXTERNAL_CATEGORY(smpi_receiver);
9 XBT_LOG_EXTERNAL_CATEGORY(smpi_sender);
10 XBT_LOG_EXTERNAL_CATEGORY(smpi_util);
12 smpi_mpi_global_t smpi_mpi_global = NULL;
14 void smpi_mpi_land_func(void *a, void *b, int *length, MPI_Datatype *datatype);
16 void smpi_mpi_land_func(void *a, void *b, int *length, MPI_Datatype *datatype)
19 if (*datatype == smpi_mpi_global->mpi_int) {
21 for (i = 0; i < *length; i++) {
27 void smpi_mpi_sum_func(void *a, void *b, int *length, MPI_Datatype *datatype);
29 void smpi_mpi_sum_func(void *a, void *b, int *length, MPI_Datatype *datatype)
32 if (*datatype == smpi_mpi_global->mpi_int) {
34 for (i = 0; i < *length; i++) {
40 int smpi_mpi_comm_rank(smpi_mpi_communicator_t comm)
42 return comm->index_to_rank_map[smpi_host_index()];
51 smpi_host_data_t hdata;
53 SIMIX_mutex_lock(smpi_global->running_hosts_count_mutex);
54 smpi_global->running_hosts_count++;
55 SIMIX_mutex_unlock(smpi_global->running_hosts_count_mutex);
57 // initialize some local variables
58 host = SIMIX_host_self();
59 hosts = SIMIX_host_get_table();
60 host_count = SIMIX_host_get_number();
62 hdata = xbt_new(s_smpi_host_data_t, 1);
64 for (i = 0; i < host_count && host != hosts[i]; i ++);
67 hdata->mutex = SIMIX_mutex_init();
68 hdata->cond = SIMIX_cond_init();
70 SIMIX_host_set_data(host, hdata);
72 // node 0 sets the globals
75 smpi_global->hosts = hosts;
76 smpi_global->host_count = host_count;
78 smpi_mpi_global = xbt_new(s_smpi_mpi_global_t, 1);
80 // global communicator
81 smpi_mpi_global->mpi_comm_world = xbt_new(s_smpi_mpi_communicator_t, 1);
82 smpi_mpi_global->mpi_comm_world->size = host_count;
83 smpi_mpi_global->mpi_comm_world->barrier_count = 0;
84 smpi_mpi_global->mpi_comm_world->barrier_mutex = SIMIX_mutex_init();
85 smpi_mpi_global->mpi_comm_world->barrier_cond = SIMIX_cond_init();
86 smpi_mpi_global->mpi_comm_world->rank_to_index_map = xbt_new(int, host_count);
87 smpi_mpi_global->mpi_comm_world->index_to_rank_map = xbt_new(int, host_count);
88 for (i = 0; i < host_count; i++) {
89 smpi_mpi_global->mpi_comm_world->rank_to_index_map[i] = i;
90 smpi_mpi_global->mpi_comm_world->index_to_rank_map[i] = i;
94 smpi_mpi_global->mpi_byte = xbt_new(s_smpi_mpi_datatype_t, 1);
95 smpi_mpi_global->mpi_byte->size = (size_t)1;
96 smpi_mpi_global->mpi_int = xbt_new(s_smpi_mpi_datatype_t, 1);
97 smpi_mpi_global->mpi_int->size = sizeof(int);
98 smpi_mpi_global->mpi_double = xbt_new(s_smpi_mpi_datatype_t, 1);
99 smpi_mpi_global->mpi_double->size = sizeof(double);
102 smpi_mpi_global->mpi_land = xbt_new(s_smpi_mpi_op_t, 1);
103 smpi_mpi_global->mpi_land->func = smpi_mpi_land_func;
104 smpi_mpi_global->mpi_sum = xbt_new(s_smpi_mpi_op_t, 1);
105 smpi_mpi_global->mpi_sum->func = smpi_mpi_sum_func;
107 // signal all nodes to perform initialization
108 SIMIX_mutex_lock(smpi_global->start_stop_mutex);
109 smpi_global->root_ready = 1;
110 SIMIX_cond_broadcast(smpi_global->start_stop_cond);
111 SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
115 // make sure root is done before own initialization
116 SIMIX_mutex_lock(smpi_global->start_stop_mutex);
117 while (!smpi_global->root_ready) {
118 SIMIX_cond_wait(smpi_global->start_stop_cond, smpi_global->start_stop_mutex);
120 SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
124 // wait for all nodes to signal initializatin complete
125 SIMIX_mutex_lock(smpi_global->start_stop_mutex);
126 smpi_global->ready_process_count++;
127 if (smpi_global->ready_process_count >= 3 * host_count) {
128 SIMIX_cond_broadcast(smpi_global->start_stop_cond);
130 while (smpi_global->ready_process_count < 3 * host_count) {
131 SIMIX_cond_wait(smpi_global->start_stop_cond, smpi_global->start_stop_mutex);
133 SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
138 void smpi_mpi_finalize()
142 SIMIX_mutex_lock(smpi_global->running_hosts_count_mutex);
143 i = --smpi_global->running_hosts_count;
144 SIMIX_mutex_unlock(smpi_global->running_hosts_count_mutex);
146 SIMIX_mutex_lock(smpi_global->start_stop_mutex);
147 smpi_global->ready_process_count--;
148 SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
150 SIMIX_mutex_destroy(smpi_host_mutex());
151 SIMIX_cond_destroy(smpi_host_cond());
155 // wake up senders/receivers
156 for (i = 0; i < smpi_global->host_count; i++) {
157 if (SIMIX_process_is_suspended(smpi_global->sender_processes[i])) {
158 SIMIX_process_resume(smpi_global->sender_processes[i]);
160 if (SIMIX_process_is_suspended(smpi_global->receiver_processes[i])) {
161 SIMIX_process_resume(smpi_global->receiver_processes[i]);
165 SIMIX_mutex_destroy(smpi_mpi_global->mpi_comm_world->barrier_mutex);
166 SIMIX_cond_destroy(smpi_mpi_global->mpi_comm_world->barrier_cond);
167 xbt_free(smpi_mpi_global->mpi_comm_world);
169 xbt_free(smpi_mpi_global->mpi_byte);
170 xbt_free(smpi_mpi_global->mpi_int);
171 xbt_free(smpi_mpi_global->mpi_double);
173 xbt_free(smpi_mpi_global->mpi_land);
174 xbt_free(smpi_mpi_global->mpi_sum);
176 xbt_free(smpi_mpi_global);
182 int smpi_mpi_barrier(smpi_mpi_communicator_t comm)
185 SIMIX_mutex_lock(comm->barrier_mutex);
186 ++comm->barrier_count;
187 if (comm->barrier_count > comm->size) { // only happens on second barrier...
188 comm->barrier_count = 0;
189 } else if (comm->barrier_count == comm->size) {
190 SIMIX_cond_broadcast(comm->barrier_cond);
192 while (comm->barrier_count < comm->size) {
193 SIMIX_cond_wait(comm->barrier_cond, comm->barrier_mutex);
195 SIMIX_mutex_unlock(comm->barrier_mutex);
200 int smpi_mpi_isend(smpi_mpi_request_t request)
202 int retval = MPI_SUCCESS;
203 int index = smpi_host_index();
205 if (NULL == request) {
206 retval = MPI_ERR_INTERN;
208 SIMIX_mutex_lock(smpi_global->pending_send_request_queues_mutexes[index]);
209 xbt_fifo_push(smpi_global->pending_send_request_queues[index], request);
210 SIMIX_mutex_unlock(smpi_global->pending_send_request_queues_mutexes[index]);
212 if (SIMIX_process_is_suspended(smpi_global->sender_processes[index])) {
213 SIMIX_process_resume(smpi_global->sender_processes[index]);
220 int smpi_mpi_irecv(smpi_mpi_request_t request)
222 int retval = MPI_SUCCESS;
223 int index = smpi_host_index();
225 if (NULL == request) {
226 retval = MPI_ERR_INTERN;
228 SIMIX_mutex_lock(smpi_global->pending_recv_request_queues_mutexes[index]);
229 xbt_fifo_push(smpi_global->pending_recv_request_queues[index], request);
230 SIMIX_mutex_unlock(smpi_global->pending_recv_request_queues_mutexes[index]);
232 if (SIMIX_process_is_suspended(smpi_global->receiver_processes[index])) {
233 SIMIX_process_resume(smpi_global->receiver_processes[index]);
240 int smpi_mpi_wait(smpi_mpi_request_t request, smpi_mpi_status_t *status)
242 int retval = MPI_SUCCESS;
244 if (NULL == request) {
245 retval = MPI_ERR_INTERN;
247 SIMIX_mutex_lock(request->mutex);
248 while (!request->completed) {
249 SIMIX_cond_wait(request->cond, request->mutex);
251 if (NULL != status) {
252 status->MPI_SOURCE = request->src;
253 status->MPI_TAG = request->tag;
254 status->MPI_ERROR = MPI_SUCCESS;
256 SIMIX_mutex_unlock(request->mutex);