3 SMPI_MPI_Global_t smpi_mpi_global = NULL;
5 void smpi_mpi_land_func(void *x, void *y, void *z)
7 *(int *)z = *(int *)x && *(int *)y;
10 void smpi_mpi_sum_func(void *x, void *y, void *z)
12 *(int *)z = *(int *)x + *(int *)y;
15 int inline smpi_mpi_comm_size(smpi_mpi_communicator_t *comm)
20 // FIXME: smarter algorithm?
21 int smpi_mpi_comm_rank(smpi_mpi_communicator_t *comm, smx_host_t host)
25 for(i = comm->size - 1; i > 0 && host != comm->simdata->hosts[i]; i--);
30 int inline smpi_mpi_comm_rank_self(smpi_mpi_communicator_t *comm)
32 return smpi_mpi_comm_rank(comm, SIMIX_host_self());
37 smx_process_t process;
42 SIMIX_mutex_lock(smpi_global->running_hosts_count_mutex);
43 smpi_global->running_hosts_count++;
44 SIMIX_mutex_unlock(smpi_global->running_hosts_count_mutex);
46 // initialize some local variables
47 process = SIMIX_process_self();
48 host = SIMIX_host_self();
49 hosts = SIMIX_host_get_table();
50 size = SIMIX_host_get_number();
52 // node 0 sets the globals
53 if (host == hosts[0]) {
55 smpi_mpi_global = xbt_new(s_SMPI_MPI_Global_t, 1);
57 // global communicator
58 smpi_mpi_global->mpi_comm_world = xbt_new(smpi_mpi_communicator_t, 1);
59 smpi_mpi_global->mpi_comm_world->size = size;
60 smpi_mpi_global->mpi_comm_world->simdata = xbt_new(s_smpi_mpi_communicator_simdata_t, 1);
61 smpi_mpi_global->mpi_comm_world->simdata->barrier_count = 0;
62 smpi_mpi_global->mpi_comm_world->simdata->barrier_mutex = SIMIX_mutex_init();
63 smpi_mpi_global->mpi_comm_world->simdata->barrier_cond = SIMIX_cond_init();
64 smpi_mpi_global->mpi_comm_world->simdata->hosts = hosts;
65 smpi_mpi_global->mpi_comm_world->simdata->processes = xbt_new(smx_process_t, size);
66 smpi_mpi_global->mpi_comm_world->simdata->processes[0] = process;
69 smpi_mpi_global->mpi_byte = xbt_new(smpi_mpi_datatype_t, 1);
70 smpi_mpi_global->mpi_byte->size = (size_t)1;
71 smpi_mpi_global->mpi_int = xbt_new(smpi_mpi_datatype_t, 1);
72 smpi_mpi_global->mpi_int->size = sizeof(int);
73 smpi_mpi_global->mpi_double = xbt_new(smpi_mpi_datatype_t, 1);
74 smpi_mpi_global->mpi_double->size = sizeof(double);
77 smpi_mpi_global->mpi_land = xbt_new(smpi_mpi_op_t, 1);
78 smpi_mpi_global->mpi_land->func = smpi_mpi_land_func;
79 smpi_mpi_global->mpi_sum = xbt_new(smpi_mpi_op_t, 1);
80 smpi_mpi_global->mpi_sum->func = smpi_mpi_sum_func;
82 // signal all nodes to perform initialization
83 SIMIX_mutex_lock(smpi_global->start_stop_mutex);
84 smpi_global->root_ready = 1;
85 SIMIX_cond_broadcast(smpi_global->start_stop_cond);
86 SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
90 // make sure root is done before own initialization
91 SIMIX_mutex_lock(smpi_global->start_stop_mutex);
92 if (!smpi_global->root_ready) {
93 SIMIX_cond_wait(smpi_global->start_stop_cond, smpi_global->start_stop_mutex);
95 SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
97 smpi_mpi_global->mpi_comm_world->simdata->processes[smpi_mpi_comm_rank_self(smpi_mpi_global->mpi_comm_world)] = process;
100 // wait for all nodes to signal initializatin complete
101 SIMIX_mutex_lock(smpi_global->start_stop_mutex);
102 smpi_global->ready_process_count++;
103 if (smpi_global->ready_process_count < 3 * size) {
104 SIMIX_cond_wait(smpi_global->start_stop_cond, smpi_global->start_stop_mutex);
106 SIMIX_cond_broadcast(smpi_global->start_stop_cond);
108 SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
113 void smpi_mpi_finalize()
117 SIMIX_mutex_lock(smpi_global->running_hosts_count_mutex);
118 i = --smpi_global->running_hosts_count;
119 SIMIX_mutex_unlock(smpi_global->running_hosts_count_mutex);
121 SIMIX_mutex_lock(smpi_global->start_stop_mutex);
122 smpi_global->ready_process_count--;
123 SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
127 // wake up senders/receivers
128 for (i = 0; i < smpi_mpi_global->mpi_comm_world->size; i++) {
129 if (SIMIX_process_is_suspended(smpi_global->sender_processes[i])) {
130 SIMIX_process_resume(smpi_global->sender_processes[i]);
132 if (SIMIX_process_is_suspended(smpi_global->receiver_processes[i])) {
133 SIMIX_process_resume(smpi_global->receiver_processes[i]);
137 // wait for senders/receivers to exit...
138 SIMIX_mutex_lock(smpi_global->start_stop_mutex);
139 if (smpi_global->ready_process_count > 0) {
140 SIMIX_cond_wait(smpi_global->start_stop_cond, smpi_global->start_stop_mutex);
142 SIMIX_mutex_unlock(smpi_global->start_stop_mutex);
144 SIMIX_mutex_destroy(smpi_mpi_global->mpi_comm_world->simdata->barrier_mutex);
145 SIMIX_cond_destroy(smpi_mpi_global->mpi_comm_world->simdata->barrier_cond);
146 xbt_free(smpi_mpi_global->mpi_comm_world->simdata->processes);
147 xbt_free(smpi_mpi_global->mpi_comm_world->simdata);
148 xbt_free(smpi_mpi_global->mpi_comm_world);
150 xbt_free(smpi_mpi_global->mpi_byte);
151 xbt_free(smpi_mpi_global->mpi_int);
152 xbt_free(smpi_mpi_global->mpi_double);
154 xbt_free(smpi_mpi_global->mpi_land);
155 xbt_free(smpi_mpi_global->mpi_sum);
157 xbt_free(smpi_mpi_global);
162 void smpi_barrier(smpi_mpi_communicator_t *comm)
165 SIMIX_mutex_lock(comm->simdata->barrier_mutex);
166 if(++comm->simdata->barrier_count < comm->size) {
167 SIMIX_cond_wait(comm->simdata->barrier_cond, comm->simdata->barrier_mutex);
169 comm->simdata->barrier_count = 0;
170 SIMIX_cond_broadcast(comm->simdata->barrier_cond);
172 SIMIX_mutex_unlock(comm->simdata->barrier_mutex);
177 int smpi_create_request(void *buf, int count, smpi_mpi_datatype_t *datatype,
178 int src, int dst, int tag, smpi_mpi_communicator_t *comm, smpi_mpi_request_t **request)
180 int retval = MPI_SUCCESS;
185 retval = MPI_ERR_COUNT;
186 } else if (NULL == buf) {
187 retval = MPI_ERR_INTERN;
188 } else if (NULL == datatype) {
189 retval = MPI_ERR_TYPE;
190 } else if (NULL == comm) {
191 retval = MPI_ERR_COMM;
192 } else if (MPI_ANY_SOURCE != src && (0 > src || comm->size <= src)) {
193 retval = MPI_ERR_RANK;
194 } else if (0 > dst || comm->size <= dst) {
195 retval = MPI_ERR_RANK;
196 } else if (0 > tag) {
197 retval = MPI_ERR_TAG;
199 *request = xbt_mallocator_get(smpi_global->request_mallocator);
200 (*request)->comm = comm;
201 (*request)->src = src;
202 (*request)->dst = dst;
203 (*request)->tag = tag;
204 (*request)->buf = buf;
205 (*request)->count = count;
206 (*request)->datatype = datatype;
211 int smpi_isend(smpi_mpi_request_t *request)
213 int retval = MPI_SUCCESS;
214 int rank = smpi_mpi_comm_rank_self(smpi_mpi_global->mpi_comm_world);
216 if (NULL != request) {
217 SIMIX_mutex_lock(smpi_global->pending_send_request_queues_mutexes[rank]);
218 xbt_fifo_push(smpi_global->pending_send_request_queues[rank], request);
219 SIMIX_mutex_unlock(smpi_global->pending_send_request_queues_mutexes[rank]);
222 if (SIMIX_process_is_suspended(smpi_global->sender_processes[rank])) {
223 SIMIX_process_resume(smpi_global->sender_processes[rank]);
229 int smpi_irecv(smpi_mpi_request_t *request)
231 int retval = MPI_SUCCESS;
232 int rank = smpi_mpi_comm_rank_self(smpi_mpi_global->mpi_comm_world);
234 if (NULL != request) {
235 SIMIX_mutex_lock(smpi_global->pending_recv_request_queues_mutexes[rank]);
236 xbt_fifo_push(smpi_global->pending_recv_request_queues[rank], request);
237 SIMIX_mutex_unlock(smpi_global->pending_recv_request_queues_mutexes[rank]);
240 if (SIMIX_process_is_suspended(smpi_global->receiver_processes[rank])) {
241 SIMIX_process_resume(smpi_global->receiver_processes[rank]);
247 void smpi_wait(smpi_mpi_request_t *request, smpi_mpi_status_t *status)
249 if (NULL != request) {
250 SIMIX_mutex_lock(request->simdata->mutex);
251 if (!request->completed) {
252 SIMIX_cond_wait(request->simdata->cond, request->simdata->mutex);
254 if (NULL != status) {
255 status->MPI_SOURCE = request->src;
257 SIMIX_mutex_unlock(request->simdata->mutex);