3 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_mpi, smpi, "Logging specific to SMPI (mpi)");
5 int SMPI_MPI_Init(int *argc, char ***argv)
12 int SMPI_MPI_Finalize()
19 // right now this just exits the current node, should send abort signal to all
20 // hosts in the communicator;
21 int SMPI_MPI_Abort(MPI_Comm comm, int errorcode)
27 int SMPI_MPI_Comm_size(MPI_Comm comm, int *size)
29 int retval = MPI_SUCCESS;
34 retval = MPI_ERR_COMM;
35 } else if (NULL == size) {
46 int SMPI_MPI_Comm_rank(MPI_Comm comm, int *rank)
48 int retval = MPI_SUCCESS;
53 retval = MPI_ERR_COMM;
54 } else if (NULL == rank) {
57 *rank = smpi_mpi_comm_rank(comm);
65 int SMPI_MPI_Type_size(MPI_Datatype datatype, size_t *size)
67 int retval = MPI_SUCCESS;
71 if (NULL == datatype) {
72 retval = MPI_ERR_TYPE;
73 } else if (NULL == size) {
76 *size = datatype->size;
84 int SMPI_MPI_Barrier(MPI_Comm comm)
86 int retval = MPI_SUCCESS;
91 retval = MPI_ERR_COMM;
93 retval = smpi_mpi_barrier(comm);
101 int SMPI_MPI_Irecv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Request *request)
103 int retval = MPI_SUCCESS;
107 retval = smpi_create_request(buf, count, datatype, src, 0, tag, comm, request);
108 if (NULL != *request && MPI_SUCCESS == retval) {
109 retval = smpi_mpi_irecv(*request);
117 int SMPI_MPI_Recv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Status *status)
119 int retval = MPI_SUCCESS;
120 smpi_mpi_request_t request;
124 retval = smpi_create_request(buf, count, datatype, src, 0, tag, comm, &request);
125 if (NULL != request && MPI_SUCCESS == retval) {
126 retval = smpi_mpi_irecv(request);
127 if (MPI_SUCCESS == retval) {
128 retval = smpi_mpi_wait(request, status);
130 xbt_mallocator_release(smpi_global->request_mallocator, request);
138 int SMPI_MPI_Isend(void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm, MPI_Request *request)
140 int retval = MPI_SUCCESS;
144 retval = smpi_create_request(buf, count, datatype, 0, dst, tag, comm, request);
145 if (NULL != *request && MPI_SUCCESS == retval) {
146 retval = smpi_mpi_isend(*request);
154 int SMPI_MPI_Send(void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm)
156 int retval = MPI_SUCCESS;
157 smpi_mpi_request_t request;
161 retval = smpi_create_request(buf, count, datatype, 0, dst, tag, comm, &request);
162 if (NULL != request && MPI_SUCCESS == retval) {
163 retval = smpi_mpi_isend(request);
164 if (MPI_SUCCESS == retval) {
165 smpi_mpi_wait(request, MPI_STATUS_IGNORE);
167 xbt_mallocator_release(smpi_global->request_mallocator, request);
175 int SMPI_MPI_Bcast(void *buf, int count, MPI_Datatype datatype, int root, MPI_Comm comm) {
177 int retval = MPI_SUCCESS;
179 smpi_mpi_request_t request;
183 rank = smpi_mpi_comm_rank(comm);
186 retval = smpi_create_request(buf, count, datatype, root, (root + 1) % comm->size, 0, comm, &request);
187 request->forward = comm->size - 1;
188 smpi_mpi_isend(request);
190 retval = smpi_create_request(buf, count, datatype, MPI_ANY_SOURCE, rank, 0, comm, &request);
191 smpi_mpi_irecv(request);
194 smpi_mpi_wait(request, MPI_STATUS_IGNORE);
195 xbt_mallocator_release(smpi_global->request_mallocator, request);
202 // FIXME: needs to return null in event of MPI_UNDEFINED color...
203 // FIXME: seriously, this isn't pretty
204 int SMPI_MPI_Comm_split(MPI_Comm comm, int color, int key, MPI_Comm *comm_out)
206 int retval = MPI_SUCCESS;
209 smpi_mpi_request_t request;
211 smpi_mpi_status_t status;
215 // FIXME: need to test parameters
217 index = smpi_host_index();
218 rank = comm->index_to_rank_map[index];
221 int *colors = xbt_new(int, comm->size);
222 int *keys = xbt_new(int, comm->size);
224 smpi_mpi_communicator_t tempcomm = NULL;
227 int *keystmp = xbt_new(int, comm->size);
228 int *rankstmp = xbt_new(int, comm->size);
235 // FIXME: not efficient
236 for (i = 1; i < comm->size; i++) {
237 retval = smpi_create_request(colorkey, 2, MPI_INT, MPI_ANY_SOURCE, rank, MPI_ANY_TAG, comm, &request);
238 smpi_mpi_irecv(request);
239 smpi_mpi_wait(request, &status);
240 xbt_mallocator_release(smpi_global->request_mallocator, request);
241 colors[i] = colorkey[0];
242 keys[i] = colorkey[1];
245 for (i = 0; i < comm->size; i++) {
246 if (-1 == colors[i]) {
249 colortmp = colors[i];
251 for (j = i; j < comm->size; j++) {
252 if(colortmp == colors[j]) {
254 keystmp[keycount] = keys[j];
255 rankstmp[keycount] = j;
260 // FIXME: yes, mock me, bubble sort...
261 for (j = 0; j < keycount; j++) {
262 for (k = keycount - 1; k > j; k--) {
263 if (keystmp[k] < keystmp[k - 1]) {
265 keystmp[k] = keystmp[k - 1];
266 keystmp[k - 1] = tmpval;
268 tmpval = rankstmp[k];
269 rankstmp[k] = rankstmp[k - 1];
270 rankstmp[k - 1] = tmpval;
274 tempcomm = xbt_new(s_smpi_mpi_communicator_t, 1);
275 tempcomm->barrier_count = 0;
276 tempcomm->barrier_mutex = SIMIX_mutex_init();
277 tempcomm->barrier_cond = SIMIX_cond_init();
278 tempcomm->rank_to_index_map = xbt_new(int, keycount);
279 tempcomm->index_to_rank_map = xbt_new(int, smpi_global->host_count);
280 for (j = 0; j < smpi_global->host_count; j++) {
281 tempcomm->index_to_rank_map[j] = -1;
283 for (j = 0; j < keycount; j++) {
284 indextmp = comm->rank_to_index_map[rankstmp[j]];
285 tempcomm->rank_to_index_map[j] = indextmp;
286 tempcomm->index_to_rank_map[indextmp] = j;
288 for (j = 0; j < keycount; j++) {
289 retval = smpi_create_request(&j, 1, MPI_INT, 0, rankstmp[j], 0, comm, &request);
290 request->data = tempcomm;
291 smpi_mpi_isend(request);
292 smpi_mpi_wait(request, &status);
293 xbt_mallocator_release(smpi_global->request_mallocator, request);
300 retval = smpi_create_request(colorkey, 2, MPI_INT, rank, 0, 0, comm, &request);
301 smpi_mpi_isend(request);
302 smpi_mpi_wait(request, &status);
303 xbt_mallocator_release(smpi_global->request_mallocator, request);
304 retval = smpi_create_request(colorkey, 1, MPI_INT, 0, rank, 0, comm, &request);
305 smpi_mpi_irecv(request);
306 smpi_mpi_wait(request, &status);
307 *comm_out = request->data;