X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/e7c0c67af63b3979a597a66e5e1c8b0435fc6e19..cd9affe6152d6bbec19a72ea6fe26ab9407b51b7:/src/smpi/colls/allgather-SMP-NTS.c diff --git a/src/smpi/colls/allgather-SMP-NTS.c b/src/smpi/colls/allgather-SMP-NTS.c index 1b49bd4be8..d4838ed4a6 100644 --- a/src/smpi/colls/allgather-SMP-NTS.c +++ b/src/smpi/colls/allgather-SMP-NTS.c @@ -1,7 +1,10 @@ +/* Copyright (c) 2013-2014. The SimGrid Team. + * All rights reserved. */ + +/* This program is free software; you can redistribute it and/or modify it + * under the terms of the license (GNU LGPL) which comes with this package. */ + #include "colls_private.h" -#ifndef NUM_CORE -#define NUM_CORE 8 -#endif int smpi_coll_tuned_allgather_SMP_NTS(void *sbuf, int scount, MPI_Datatype stype, void *rbuf, @@ -14,21 +17,30 @@ int smpi_coll_tuned_allgather_SMP_NTS(void *sbuf, int scount, MPI_Aint rextent, sextent; rextent = smpi_datatype_get_extent(rtype); sextent = smpi_datatype_get_extent(stype); - int tag = 50; - MPI_Request request; - MPI_Request rrequest_array[128]; - MPI_Request srequest_array[128]; + int tag = COLL_TAG_ALLGATHER; - MPI_Status status; int i, send_offset, recv_offset; int intra_rank, inter_rank; - intra_rank = rank % NUM_CORE; - inter_rank = rank / NUM_CORE; - int inter_comm_size = (comm_size + NUM_CORE - 1) / NUM_CORE; - int num_core_in_current_smp = NUM_CORE; + + if(smpi_comm_get_leaders_comm(comm)==MPI_COMM_NULL){ + smpi_comm_init_smp(comm); + } + int num_core=1; + if (smpi_comm_is_uniform(comm)){ + num_core = smpi_comm_size(smpi_comm_get_intra_comm(comm)); + } + + + intra_rank = rank % num_core; + inter_rank = rank / num_core; + int inter_comm_size = (comm_size + num_core - 1) / num_core; + int num_core_in_current_smp = num_core; + + if(comm_size%num_core) + THROWF(arg_error,0, "allgather SMP NTS algorithm can't be used with non multiple of NUM_CORE=%d number of processes ! ", num_core); /* for too small number of processes, use default implementation */ - if (comm_size <= NUM_CORE) { + if (comm_size <= num_core) { XBT_WARN("MPI_allgather_SMP_NTS use default MPI_allgather."); smpi_mpi_allgather(sbuf, scount, stype, rbuf, rcount, rtype, comm); return MPI_SUCCESS; @@ -36,29 +48,29 @@ int smpi_coll_tuned_allgather_SMP_NTS(void *sbuf, int scount, // the last SMP node may have fewer number of running processes than all others if (inter_rank == (inter_comm_size - 1)) { - num_core_in_current_smp = comm_size - (inter_rank * NUM_CORE); + num_core_in_current_smp = comm_size - (inter_rank * num_core); } //copy corresponding message from sbuf to rbuf recv_offset = rank * rextent * rcount; smpi_mpi_sendrecv(sbuf, scount, stype, rank, tag, ((char *) rbuf + recv_offset), rcount, rtype, rank, tag, comm, - &status); + MPI_STATUS_IGNORE); //gather to root of each SMP for (i = 1; i < num_core_in_current_smp; i++) { dst = - (inter_rank * NUM_CORE) + (intra_rank + i) % (num_core_in_current_smp); + (inter_rank * num_core) + (intra_rank + i) % (num_core_in_current_smp); src = - (inter_rank * NUM_CORE) + (intra_rank - i + + (inter_rank * num_core) + (intra_rank - i + num_core_in_current_smp) % (num_core_in_current_smp); recv_offset = src * rextent * rcount; smpi_mpi_sendrecv(sbuf, scount, stype, dst, tag, ((char *) rbuf + recv_offset), rcount, rtype, src, tag, comm, - &status); + MPI_STATUS_IGNORE); } @@ -68,59 +80,66 @@ int smpi_coll_tuned_allgather_SMP_NTS(void *sbuf, int scount, // root of each SMP if (intra_rank == 0) { - src = ((inter_rank - 1 + inter_comm_size) % inter_comm_size) * NUM_CORE; - dst = ((inter_rank + 1) % inter_comm_size) * NUM_CORE; + MPI_Request *rrequest_array = xbt_new(MPI_Request, inter_comm_size - 1); + MPI_Request *srequest_array = xbt_new(MPI_Request, inter_comm_size - 1); + + src = ((inter_rank - 1 + inter_comm_size) % inter_comm_size) * num_core; + dst = ((inter_rank + 1) % inter_comm_size) * num_core; // post all inter Irecv for (i = 0; i < inter_comm_size - 1; i++) { recv_offset = ((inter_rank - i - 1 + - inter_comm_size) % inter_comm_size) * NUM_CORE * sextent * scount; - rrequest_array[i] = smpi_mpi_irecv((char *)rbuf+recv_offset, rcount * NUM_CORE, rtype, src, tag+i, comm); + inter_comm_size) % inter_comm_size) * num_core * sextent * scount; + rrequest_array[i] = smpi_mpi_irecv((char *)rbuf + recv_offset, rcount * num_core, + rtype, src, tag + i, comm); } // send first message send_offset = ((inter_rank + - inter_comm_size) % inter_comm_size) * NUM_CORE * sextent * scount; - srequest_array[0] = smpi_mpi_isend((char *) rbuf + send_offset, scount * NUM_CORE, stype, dst, tag, - comm); + inter_comm_size) % inter_comm_size) * num_core * sextent * scount; + srequest_array[0] = smpi_mpi_isend((char *)rbuf + send_offset, scount * num_core, + stype, dst, tag, comm); // loop : recv-inter , send-inter, send-intra (linear-bcast) for (i = 0; i < inter_comm_size - 2; i++) { recv_offset = ((inter_rank - i - 1 + - inter_comm_size) % inter_comm_size) * NUM_CORE * sextent * scount; - smpi_mpi_wait(&rrequest_array[i], &status); - srequest_array[i + 1] = smpi_mpi_isend((char *) rbuf + recv_offset, scount * NUM_CORE, stype, dst, - tag + i + 1, comm); + inter_comm_size) % inter_comm_size) * num_core * sextent * scount; + smpi_mpi_wait(&rrequest_array[i], MPI_STATUS_IGNORE); + srequest_array[i + 1] = smpi_mpi_isend((char *)rbuf + recv_offset, scount * num_core, + stype, dst, tag + i + 1, comm); if (num_core_in_current_smp > 1) { - request = smpi_mpi_isend((char *) rbuf + recv_offset, scount * NUM_CORE, stype, - (rank + 1), tag + i + 1, comm); + smpi_mpi_send((char *)rbuf + recv_offset, scount * num_core, + stype, (rank + 1), tag + i + 1, comm); } } // recv last message and send_intra recv_offset = ((inter_rank - i - 1 + - inter_comm_size) % inter_comm_size) * NUM_CORE * sextent * scount; - //recv_offset = ((inter_rank + 1) % inter_comm_size) * NUM_CORE * sextent * scount; + inter_comm_size) % inter_comm_size) * num_core * sextent * scount; + //recv_offset = ((inter_rank + 1) % inter_comm_size) * num_core * sextent * scount; //i=inter_comm_size-2; - smpi_mpi_wait(&rrequest_array[i], &status); + smpi_mpi_wait(&rrequest_array[i], MPI_STATUS_IGNORE); if (num_core_in_current_smp > 1) { - request = smpi_mpi_isend((char *) rbuf + recv_offset, scount * NUM_CORE, stype, - (rank + 1), tag + i + 1, comm); + smpi_mpi_send((char *)rbuf + recv_offset, scount * num_core, + stype, (rank + 1), tag + i + 1, comm); } + + smpi_mpi_waitall(inter_comm_size - 1, srequest_array, MPI_STATUSES_IGNORE); + xbt_free(rrequest_array); + xbt_free(srequest_array); } // last rank of each SMP else if (intra_rank == (num_core_in_current_smp - 1)) { for (i = 0; i < inter_comm_size - 1; i++) { recv_offset = ((inter_rank - i - 1 + - inter_comm_size) % inter_comm_size) * NUM_CORE * sextent * scount; - request = smpi_mpi_irecv((char *) rbuf + recv_offset, (rcount * NUM_CORE), rtype, - rank - 1, tag + i + 1, comm); - smpi_mpi_wait(&request, &status); + inter_comm_size) % inter_comm_size) * num_core * sextent * scount; + smpi_mpi_recv((char *) rbuf + recv_offset, (rcount * num_core), rtype, + rank - 1, tag + i + 1, comm, MPI_STATUS_IGNORE); } } // intermediate rank of each SMP @@ -128,12 +147,11 @@ int smpi_coll_tuned_allgather_SMP_NTS(void *sbuf, int scount, for (i = 0; i < inter_comm_size - 1; i++) { recv_offset = ((inter_rank - i - 1 + - inter_comm_size) % inter_comm_size) * NUM_CORE * sextent * scount; - request = smpi_mpi_irecv((char *) rbuf + recv_offset, (rcount * NUM_CORE), rtype, - rank - 1, tag + i + 1, comm); - smpi_mpi_wait(&request, &status); - request = smpi_mpi_isend((char *) rbuf + recv_offset, (scount * NUM_CORE), stype, - (rank + 1), tag + i + 1, comm); + inter_comm_size) % inter_comm_size) * num_core * sextent * scount; + smpi_mpi_recv((char *) rbuf + recv_offset, (rcount * num_core), rtype, + rank - 1, tag + i + 1, comm, MPI_STATUS_IGNORE); + smpi_mpi_send((char *) rbuf + recv_offset, (scount * num_core), stype, + (rank + 1), tag + i + 1, comm); } }