X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/c086caac4026d0bbd54508d51ce4738157d15238..4aa505c950a4c8db13c8b15f17158cdef848f0d4:/src/smpi/smpi_mpi.c diff --git a/src/smpi/smpi_mpi.c b/src/smpi/smpi_mpi.c index 102520e22d..485374468e 100644 --- a/src/smpi/smpi_mpi.c +++ b/src/smpi/smpi_mpi.c @@ -1,189 +1,350 @@ #include "private.h" -int MPI_Init(int *argc, char ***argv) +XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_mpi, smpi, + "Logging specific to SMPI (mpi)"); + +int SMPI_MPI_Init(int *argc, char ***argv) { - smpi_mpi_init(); - smpi_bench_begin(); - return MPI_SUCCESS; + smpi_process_init(); + smpi_bench_begin(); + return MPI_SUCCESS; } -int MPI_Finalize() +int SMPI_MPI_Finalize() { - smpi_bench_end(); - smpi_mpi_finalize(); - return MPI_SUCCESS; + smpi_bench_end(); + smpi_process_finalize(); + return MPI_SUCCESS; } // right now this just exits the current node, should send abort signal to all -// hosts in the communicator; -int MPI_Abort(MPI_Comm comm, int errorcode) +// hosts in the communicator (TODO) +int SMPI_MPI_Abort(MPI_Comm comm, int errorcode) +{ + smpi_exit(errorcode); + return 0; +} + +int SMPI_MPI_Comm_size(MPI_Comm comm, int *size) +{ + int retval = MPI_SUCCESS; + + smpi_bench_end(); + + if (NULL == comm) { + retval = MPI_ERR_COMM; + } else if (NULL == size) { + retval = MPI_ERR_ARG; + } else { + *size = comm->size; + } + + smpi_bench_begin(); + + return retval; +} + +int SMPI_MPI_Comm_rank(MPI_Comm comm, int *rank) { - smpi_exit(errorcode); - return 0; + int retval = MPI_SUCCESS; + + smpi_bench_end(); + + if (NULL == comm) { + retval = MPI_ERR_COMM; + } else if (NULL == rank) { + retval = MPI_ERR_ARG; + } else { + *rank = smpi_mpi_comm_rank(comm); + } + + smpi_bench_begin(); + + return retval; } -int MPI_Comm_size(MPI_Comm comm, int *size) +int SMPI_MPI_Type_size(MPI_Datatype datatype, size_t * size) { - int retval = MPI_SUCCESS; + int retval = MPI_SUCCESS; - smpi_bench_end(); + smpi_bench_end(); - if (NULL == comm) { - retval = MPI_ERR_COMM; - } else if (NULL == size) { - retval = MPI_ERR_ARG; - } else { - *size = comm->size; - } + if (NULL == datatype) { + retval = MPI_ERR_TYPE; + } else if (NULL == size) { + retval = MPI_ERR_ARG; + } else { + *size = datatype->size; + } - smpi_bench_begin(); + smpi_bench_begin(); - return retval; + return retval; } -int MPI_Comm_rank(MPI_Comm comm, int *rank) +int SMPI_MPI_Barrier(MPI_Comm comm) { - int retval = MPI_SUCCESS; + int retval = MPI_SUCCESS; - smpi_bench_end(); + smpi_bench_end(); - if (NULL == comm) { - retval = MPI_ERR_COMM; - } else if (NULL == rank) { - retval = MPI_ERR_ARG; - } else { - retval = smpi_mpi_comm_rank(comm, rank); - } + if (NULL == comm) { + retval = MPI_ERR_COMM; + } else { + retval = smpi_mpi_barrier(comm); + } - smpi_bench_begin(); + smpi_bench_begin(); - return retval; + return retval; } -int MPI_Type_size(MPI_Datatype datatype, size_t *size) +int SMPI_MPI_Irecv(void *buf, int count, MPI_Datatype datatype, int src, + int tag, MPI_Comm comm, MPI_Request * request) { - int retval = MPI_SUCCESS; + int retval = MPI_SUCCESS; - smpi_bench_end(); + smpi_bench_end(); - if (NULL == datatype) { - retval = MPI_ERR_TYPE; - } else if (NULL == size) { - retval = MPI_ERR_ARG; - } else { - *size = datatype->size; - } + retval = smpi_create_request(buf, count, datatype, src, 0, tag, comm, + request); + if (NULL != *request && MPI_SUCCESS == retval) { + retval = smpi_mpi_irecv(*request); + } - smpi_bench_begin(); + smpi_bench_begin(); - return retval; + return retval; } -int MPI_Barrier(MPI_Comm comm) +int SMPI_MPI_Recv(void *buf, int count, MPI_Datatype datatype, int src, + int tag, MPI_Comm comm, MPI_Status * status) { - int retval = MPI_SUCCESS; + int retval = MPI_SUCCESS; + smpi_mpi_request_t request; - smpi_bench_end(); + smpi_bench_end(); - if (NULL == comm) { - retval = MPI_ERR_COMM; - } else { - retval = smpi_mpi_barrier(comm); - } + retval = smpi_create_request(buf, count, datatype, src, 0, tag, comm, + &request); + if (NULL != request && MPI_SUCCESS == retval) { + retval = smpi_mpi_irecv(request); + if (MPI_SUCCESS == retval) { + retval = smpi_mpi_wait(request, status); + } + xbt_mallocator_release(smpi_global->request_mallocator, request); + } - smpi_bench_begin(); + smpi_bench_begin(); - return retval; + return retval; } -int MPI_Irecv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Request *request) +int SMPI_MPI_Isend(void *buf, int count, MPI_Datatype datatype, int dst, + int tag, MPI_Comm comm, MPI_Request * request) { - int retval = MPI_SUCCESS; - int dst = 0; + int retval = MPI_SUCCESS; - smpi_bench_end(); + smpi_bench_end(); - //dst = smpi_mpi_comm_rank(comm); - if (NULL == request) { - retval = MPI_ERR_ARG; - } else { - retval = smpi_create_request(buf, count, datatype, src, dst, tag, comm, request); - if (NULL != *request && MPI_SUCCESS == retval) { - retval = smpi_mpi_irecv(*request); - } - } + retval = smpi_create_request(buf, count, datatype, 0, dst, tag, comm, + request); + if (NULL != *request && MPI_SUCCESS == retval) { + retval = smpi_mpi_isend(*request); + } - smpi_bench_begin(); + smpi_bench_begin(); - return retval; + return retval; } -int MPI_Recv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Status *status) +int SMPI_MPI_Send(void *buf, int count, MPI_Datatype datatype, int dst, + int tag, MPI_Comm comm) { - int retval = MPI_SUCCESS; - int dst = 0; - smpi_mpi_request_t request; + int retval = MPI_SUCCESS; + smpi_mpi_request_t request; - smpi_bench_end(); + smpi_bench_end(); - // FIXME: necessary? - //dst = smpi_mpi_comm_rank(comm); - retval = smpi_create_request(buf, count, datatype, src, dst, tag, comm, &request); + retval = smpi_create_request(buf, count, datatype, 0, dst, tag, comm, + &request); + if (NULL != request && MPI_SUCCESS == retval) { + retval = smpi_mpi_isend(request); + if (MPI_SUCCESS == retval) { + smpi_mpi_wait(request, MPI_STATUS_IGNORE); + } + xbt_mallocator_release(smpi_global->request_mallocator, request); + } - if (NULL != request && MPI_SUCCESS == retval) { - retval = smpi_mpi_irecv(request); - if (MPI_SUCCESS == retval) { - retval = smpi_mpi_wait(request, status); - } - xbt_mallocator_release(smpi_global->request_mallocator, request); - } + smpi_bench_begin(); - smpi_bench_begin(); + return retval; +} - return retval; +int SMPI_MPI_Wait(MPI_Request * request, MPI_Status * status) +{ + return smpi_mpi_wait(*request, status); } -int MPI_Isend(void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm, MPI_Request *request) +int SMPI_MPI_Bcast(void *buf, int count, MPI_Datatype datatype, int root, + MPI_Comm comm) { - int retval = MPI_SUCCESS; - int src = 0; - smpi_bench_end(); + int retval = MPI_SUCCESS; + int rank; + smpi_mpi_request_t request; - //src = smpi_mpi_comm_rank(comm); - if (NULL == request) { - retval = MPI_ERR_ARG; - } else { - retval = smpi_create_request(buf, count, datatype, src, dst, tag, comm, request); - if (NULL != *request && MPI_SUCCESS == retval) { - retval = smpi_mpi_isend(*request); - } - } + smpi_bench_end(); - smpi_bench_begin(); + rank = smpi_mpi_comm_rank(comm); - return retval; + if (rank == root) { + retval = smpi_create_request(buf, count, datatype, root, + (root + 1) % comm->size, 0, comm, &request); + request->forward = comm->size - 1; + smpi_mpi_isend(request); + } else { + retval = smpi_create_request(buf, count, datatype, MPI_ANY_SOURCE, rank, + 0, comm, &request); + smpi_mpi_irecv(request); + } + + smpi_mpi_wait(request, MPI_STATUS_IGNORE); + xbt_mallocator_release(smpi_global->request_mallocator, request); + + smpi_bench_begin(); + + return retval; } -int MPI_Send(void *buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm) +// used by comm_split to sort ranks based on key values +int smpi_compare_rankkeys(const void *a, const void *b); +int smpi_compare_rankkeys(const void *a, const void *b) { - int retval = MPI_SUCCESS; - int src = 0; - smpi_mpi_request_t request; + int *x = (int *) a; + int *y = (int *) b; - smpi_bench_end(); + if (x[1] < y[1]) + return -1; - //src = smpi_mpi_comm_rank(comm); - retval = smpi_create_request(buf, count, datatype, src, dst, tag, comm, &request); - if (NULL != request && MPI_SUCCESS == retval) { - retval = smpi_mpi_isend(request); - if (MPI_SUCCESS == retval) { - smpi_mpi_wait(request, MPI_STATUS_IGNORE); - } - xbt_mallocator_release(smpi_global->request_mallocator, request); - } + if (x[1] == y[1]) { + if (x[0] < y[0]) + return -1; + if (x[0] == y[0]) + return 0; + return 1; + } - smpi_bench_begin(); + return 1; +} - return retval; +int SMPI_MPI_Comm_split(MPI_Comm comm, int color, int key, + MPI_Comm * comm_out) +{ + int retval = MPI_SUCCESS; + + int index, rank; + smpi_mpi_request_t request; + int colorkey[2]; + smpi_mpi_status_t status; + + smpi_bench_end(); + + // FIXME: need to test parameters + + index = smpi_host_index(); + rank = comm->index_to_rank_map[index]; + + // default output + comm_out = NULL; + + // root node does most of the real work + if (0 == rank) { + int colormap[comm->size]; + int keymap[comm->size]; + int rankkeymap[comm->size * 2]; + int i, j; + smpi_mpi_communicator_t tempcomm = NULL; + int count; + int indextmp; + + colormap[0] = color; + keymap[0] = key; + + // FIXME: use scatter/gather or similar instead of individual comms + for (i = 1; i < comm->size; i++) { + retval = smpi_create_request(colorkey, 2, MPI_INT, MPI_ANY_SOURCE, + rank, MPI_ANY_TAG, comm, &request); + smpi_mpi_irecv(request); + smpi_mpi_wait(request, &status); + colormap[status.MPI_SOURCE] = colorkey[0]; + keymap[status.MPI_SOURCE] = colorkey[1]; + xbt_mallocator_release(smpi_global->request_mallocator, request); + } + + for (i = 0; i < comm->size; i++) { + if (MPI_UNDEFINED == colormap[i]) { + continue; + } + // make a list of nodes with current color and sort by keys + count = 0; + for (j = i; j < comm->size; j++) { + if (colormap[i] == colormap[j]) { + colormap[j] = MPI_UNDEFINED; + rankkeymap[count * 2] = j; + rankkeymap[count * 2 + 1] = keymap[j]; + count++; + } + } + qsort(rankkeymap, count, sizeof(int) * 2, &smpi_compare_rankkeys); + + // new communicator + tempcomm = xbt_new(s_smpi_mpi_communicator_t, 1); + tempcomm->barrier_count = 0; + tempcomm->size = count; + tempcomm->barrier_mutex = SIMIX_mutex_init(); + tempcomm->barrier_cond = SIMIX_cond_init(); + tempcomm->rank_to_index_map = xbt_new(int, count); + tempcomm->index_to_rank_map = xbt_new(int, smpi_global->host_count); + for (j = 0; j < smpi_global->host_count; j++) { + tempcomm->index_to_rank_map[j] = -1; + } + for (j = 0; j < count; j++) { + indextmp = comm->rank_to_index_map[rankkeymap[j * 2]]; + tempcomm->rank_to_index_map[j] = indextmp; + tempcomm->index_to_rank_map[indextmp] = j; + } + for (j = 0; j < count; j++) { + if (rankkeymap[j * 2]) { + retval = smpi_create_request(&j, 1, MPI_INT, 0, + rankkeymap[j * 2], 0, comm, &request); + request->data = tempcomm; + smpi_mpi_isend(request); + smpi_mpi_wait(request, &status); + xbt_mallocator_release(smpi_global->request_mallocator, request); + } else { + *comm_out = tempcomm; + } + } + } + } else { + colorkey[0] = color; + colorkey[1] = key; + retval = smpi_create_request(colorkey, 2, MPI_INT, rank, 0, 0, comm, + &request); + smpi_mpi_isend(request); + smpi_mpi_wait(request, &status); + xbt_mallocator_release(smpi_global->request_mallocator, request); + if (MPI_UNDEFINED != color) { + retval = smpi_create_request(colorkey, 1, MPI_INT, 0, rank, 0, comm, + &request); + smpi_mpi_irecv(request); + smpi_mpi_wait(request, &status); + *comm_out = request->data; + } + } + + smpi_bench_begin(); + + return retval; }