X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/2be0e4648c5b7055580df1c265b7c43ee6763a46..f4d034af50e34fbac8e6cf57d767f6704dfaf49c:/src/smpi/smpi_coll.c diff --git a/src/smpi/smpi_coll.c b/src/smpi/smpi_coll.c index 7798de86ea..70fdb14f87 100644 --- a/src/smpi/smpi_coll.c +++ b/src/smpi/smpi_coll.c @@ -1,6 +1,6 @@ /* smpi_coll.c -- various optimized routing for collectives */ -/* Copyright (c) 2009, 2010. The SimGrid Team. +/* Copyright (c) 2009-2013. The SimGrid Team. * All rights reserved. */ /* This program is free software; you can redistribute it and/or modify it @@ -11,10 +11,166 @@ #include #include "private.h" +#include "colls/colls.h" +#include "simgrid/sg_config.h" + +s_mpi_coll_description_t mpi_coll_gather_description[] = { + {"default", + "gather default collective", + smpi_mpi_gather}, +COLL_GATHERS(COLL_DESCRIPTION, COLL_COMMA), + {NULL, NULL, NULL} /* this array must be NULL terminated */ +}; + + +s_mpi_coll_description_t mpi_coll_allgather_description[] = { + {"default", + "allgather default collective", + smpi_mpi_allgather}, +COLL_ALLGATHERS(COLL_DESCRIPTION, COLL_COMMA), + {NULL, NULL, NULL} /* this array must be NULL terminated */ +}; + +s_mpi_coll_description_t mpi_coll_allgatherv_description[] = { + {"default", + "allgatherv default collective", + smpi_mpi_allgatherv}, +COLL_ALLGATHERVS(COLL_DESCRIPTION, COLL_COMMA), + {NULL, NULL, NULL} /* this array must be NULL terminated */ +}; + +s_mpi_coll_description_t mpi_coll_allreduce_description[] = { + {"default", + "allreduce default collective", + smpi_mpi_allreduce}, +COLL_ALLREDUCES(COLL_DESCRIPTION, COLL_COMMA), + {NULL, NULL, NULL} /* this array must be NULL terminated */ +}; + +s_mpi_coll_description_t mpi_coll_reduce_scatter_description[] = { + {"default", + "reduce_scatter default collective", + smpi_mpi_reduce_scatter}, +COLL_REDUCE_SCATTERS(COLL_DESCRIPTION, COLL_COMMA), + {NULL, NULL, NULL} /* this array must be NULL terminated */ +}; + +s_mpi_coll_description_t mpi_coll_scatter_description[] = { + {"default", + "scatter default collective", + smpi_mpi_scatter}, +COLL_SCATTERS(COLL_DESCRIPTION, COLL_COMMA), + {NULL, NULL, NULL} /* this array must be NULL terminated */ +}; + +s_mpi_coll_description_t mpi_coll_barrier_description[] = { + {"default", + "barrier default collective", + smpi_mpi_barrier}, +COLL_BARRIERS(COLL_DESCRIPTION, COLL_COMMA), + {NULL, NULL, NULL} /* this array must be NULL terminated */ +}; +s_mpi_coll_description_t mpi_coll_alltoall_description[] = { + {"default", + "Ompi alltoall default collective", + smpi_coll_tuned_alltoall_ompi2}, +COLL_ALLTOALLS(COLL_DESCRIPTION, COLL_COMMA), + {"bruck", + "Alltoall Bruck (SG) collective", + smpi_coll_tuned_alltoall_bruck}, + {"basic_linear", + "Alltoall basic linear (SG) collective", + smpi_coll_tuned_alltoall_basic_linear}, + {NULL, NULL, NULL} /* this array must be NULL terminated */ +}; + +s_mpi_coll_description_t mpi_coll_alltoallv_description[] = { + {"default", + "Ompi alltoallv default collective", + smpi_coll_basic_alltoallv}, +COLL_ALLTOALLVS(COLL_DESCRIPTION, COLL_COMMA), + {NULL, NULL, NULL} /* this array must be NULL terminated */ +}; + +s_mpi_coll_description_t mpi_coll_bcast_description[] = { + {"default", + "bcast default collective", + smpi_mpi_bcast}, +COLL_BCASTS(COLL_DESCRIPTION, COLL_COMMA), + {NULL, NULL, NULL} /* this array must be NULL terminated */ +}; + +s_mpi_coll_description_t mpi_coll_reduce_description[] = { + {"default", + "reduce default collective", + smpi_mpi_reduce}, +COLL_REDUCES(COLL_DESCRIPTION, COLL_COMMA), + {NULL, NULL, NULL} /* this array must be NULL terminated */ +}; + + + +/** Displays the long description of all registered models, and quit */ +void coll_help(const char *category, s_mpi_coll_description_t * table) +{ + int i; + printf("Long description of the %s models accepted by this simulator:\n", + category); + for (i = 0; table[i].name; i++) + printf(" %s: %s\n", table[i].name, table[i].description); +} + +int find_coll_description(s_mpi_coll_description_t * table, + char *name) +{ + int i; + char *name_list = NULL; + int selector_on=0; + if(name==NULL){//no argument provided, use active selector's algorithm + name=(char*)sg_cfg_get_string("smpi/coll_selector"); + selector_on=1; + } + for (i = 0; table[i].name; i++) + if (!strcmp(name, table[i].name)) { + return i; + } + + if(selector_on){ + // collective seems not handled by the active selector, try with default one + name=(char*)"default"; + for (i = 0; table[i].name; i++) + if (!strcmp(name, table[i].name)) { + return i; + } + } + if (!table[0].name) + xbt_die("No collective is valid! This is a bug."); + name_list = xbt_strdup(table[0].name); + for (i = 1; table[i].name; i++) { + name_list = + xbt_realloc(name_list, + strlen(name_list) + strlen(table[i].name) + 3); + strcat(name_list, ", "); + strcat(name_list, table[i].name); + } + xbt_die("Collective '%s' is invalid! Valid collectives are: %s.", name, name_list); + return -1; +} XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_coll, smpi, "Logging specific to SMPI (coll)"); +int (*mpi_coll_gather_fun)(void *, int, MPI_Datatype, void*, int, MPI_Datatype, int root, MPI_Comm); +int (*mpi_coll_allgather_fun)(void *, int, MPI_Datatype, void*, int, MPI_Datatype, MPI_Comm); +int (*mpi_coll_allgatherv_fun)(void *, int, MPI_Datatype, void*, int*, int*, MPI_Datatype, MPI_Comm); +int (*mpi_coll_allreduce_fun)(void *sbuf, void *rbuf, int rcount, MPI_Datatype dtype, MPI_Op op, MPI_Comm comm); +int (*mpi_coll_alltoall_fun)(void *, int, MPI_Datatype, void*, int, MPI_Datatype, MPI_Comm); +int (*mpi_coll_alltoallv_fun)(void *, int*, int*, MPI_Datatype, void*, int*, int*, MPI_Datatype, MPI_Comm); +int (*mpi_coll_bcast_fun)(void *buf, int count, MPI_Datatype datatype, int root, MPI_Comm com); +int (*mpi_coll_reduce_fun)(void *buf, void *rbuf, int count, MPI_Datatype datatype, MPI_Op op, int root, MPI_Comm comm); +int (*mpi_coll_reduce_scatter_fun)(void *sbuf, void *rbuf, int *rcounts,MPI_Datatype dtype,MPI_Op op,MPI_Comm comm); +int (*mpi_coll_scatter_fun)(void *sendbuf, int sendcount, MPI_Datatype sendtype,void *recvbuf, int recvcount, MPI_Datatype recvtype,int root, MPI_Comm comm); +int (*mpi_coll_barrier_fun)(MPI_Comm comm); struct s_proc_tree { int PROCTREE_A; int numChildren; @@ -89,7 +245,7 @@ static void build_tree(int root, int rank, int size, proc_tree_t * tree) static void tree_bcast(void *buf, int count, MPI_Datatype datatype, MPI_Comm comm, proc_tree_t tree) { - int system_tag = 999; // used negative int but smpi_create_request() declares this illegal (to be checked) + int system_tag = COLL_TAG_BCAST; int rank, i; MPI_Request *requests; @@ -127,7 +283,7 @@ static void tree_bcast(void *buf, int count, MPI_Datatype datatype, static void tree_antibcast(void *buf, int count, MPI_Datatype datatype, MPI_Comm comm, proc_tree_t tree) { - int system_tag = 999; // used negative int but smpi_create_request() declares this illegal (to be checked) + int system_tag = COLL_TAG_BCAST; int rank, i; MPI_Request *requests; @@ -192,6 +348,32 @@ void nary_tree_barrier(MPI_Comm comm, int arity) free_tree(tree); } +int smpi_coll_tuned_alltoall_ompi2(void *sendbuf, int sendcount, + MPI_Datatype sendtype, void *recvbuf, + int recvcount, MPI_Datatype recvtype, + MPI_Comm comm) +{ + int size, sendsize; + size = smpi_comm_size(comm); + sendsize = smpi_datatype_size(sendtype) * sendcount; + if (sendsize < 200 && size > 12) { + return + smpi_coll_tuned_alltoall_bruck(sendbuf, sendcount, sendtype, + recvbuf, recvcount, recvtype, + comm); + } else if (sendsize < 3000) { + return + smpi_coll_tuned_alltoall_basic_linear(sendbuf, sendcount, + sendtype, recvbuf, + recvcount, recvtype, comm); + } else { + return + smpi_coll_tuned_alltoall_ring(sendbuf, sendcount, sendtype, + recvbuf, recvcount, recvtype, + comm); + } +} + /** * Alltoall Bruck * @@ -261,7 +443,7 @@ int smpi_coll_tuned_alltoall_bruck(void *sendbuf, int sendcount, } /** - * Alltoall basic_linear + * Alltoall basic_linear (STARMPI:alltoall-simple) **/ int smpi_coll_tuned_alltoall_basic_linear(void *sendbuf, int sendcount, MPI_Datatype sendtype, @@ -316,44 +498,6 @@ int smpi_coll_tuned_alltoall_basic_linear(void *sendbuf, int sendcount, return err; } -/** - * Alltoall pairwise - * - * this algorithm performs size steps (1<=s<=size) and - * at each step s, a process p sends iand receive to.from a unique distinct remote process - * size=5 : s=1: 4->0->1, 0->1->2, 1->2->3, ... - * s=2: 3->0->2, 4->1->3, 0->2->4, 1->3->0 , 2->4->1 - * .... - * Openmpi calls this routine when the message size sent to each rank is greater than 3000 bytes - **/ -int smpi_coll_tuned_alltoall_pairwise(void *sendbuf, int sendcount, - MPI_Datatype sendtype, void *recvbuf, - int recvcount, MPI_Datatype recvtype, - MPI_Comm comm) -{ - int system_tag = 999; - int rank, size, step, sendto, recvfrom, sendsize, recvsize; - - rank = smpi_comm_rank(comm); - size = smpi_comm_size(comm); - XBT_DEBUG("<%d> algorithm alltoall_pairwise() called.", rank); - sendsize = smpi_datatype_size(sendtype); - recvsize = smpi_datatype_size(recvtype); - /* Perform pairwise exchange - starting from 1 so the local copy is last */ - for (step = 1; step < size + 1; step++) { - /* who do we talk to in this step? */ - sendto = (rank + step) % size; - recvfrom = (rank + size - step) % size; - /* send and receive */ - smpi_mpi_sendrecv(&((char *) sendbuf)[sendto * sendsize * sendcount], - sendcount, sendtype, sendto, system_tag, - &((char *) recvbuf)[recvfrom * recvsize * recvcount], - recvcount, recvtype, recvfrom, system_tag, comm, - MPI_STATUS_IGNORE); - } - return MPI_SUCCESS; -} - int smpi_coll_basic_alltoallv(void *sendbuf, int *sendcounts, int *senddisps, MPI_Datatype sendtype, void *recvbuf, int *recvcounts,