X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/b7ed19dfcc221d7b3eca182abb5c4a3946671172..d656f9465e7b1c36319f86eeafdcec58fe9551a4:/src/smpi/colls/allreduce/allreduce-smp-binomial-pipeline.cpp?ds=sidebyside diff --git a/src/smpi/colls/allreduce/allreduce-smp-binomial-pipeline.cpp b/src/smpi/colls/allreduce/allreduce-smp-binomial-pipeline.cpp index 9ac2c82281..b14baa5f41 100644 --- a/src/smpi/colls/allreduce/allreduce-smp-binomial-pipeline.cpp +++ b/src/smpi/colls/allreduce/allreduce-smp-binomial-pipeline.cpp @@ -1,20 +1,20 @@ -/* Copyright (c) 2013-2014. The SimGrid Team. +/* Copyright (c) 2013-2017. 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" -/* IMPLEMENTED BY PITCH PATARASUK - Non-topoloty-specific (however, number of cores/node need to be changed) +#include "../colls_private.hpp" +/* IMPLEMENTED BY PITCH PATARASUK + Non-topoloty-specific (however, number of cores/node need to be changed) all-reduce operation designed for smp clusters - It uses 2-layer communication: binomial for both intra-communication + It uses 2-layer communication: binomial for both intra-communication inter-communication The communication are done in a pipeline fashion */ -/* this is a default segment size for pipelining, +/* this is a default segment size for pipelining, but it is typically passed as a command line argument */ int allreduce_smp_binomial_pipeline_segment_size = 4096; @@ -38,6 +38,8 @@ This fucntion performs all-reduce operation as follow. ** in a pipeline fashion 3) binomial_tree bcast intra-communication between root of each SMP node 4) binomial_tree bcast inside each SMP node */ +namespace simgrid{ +namespace smpi{ int Coll_allreduce_smp_binomial_pipeline::allreduce(void *send_buf, void *recv_buf, int count, MPI_Datatype dtype, @@ -111,7 +113,7 @@ int Coll_allreduce_smp_binomial_pipeline::allreduce(void *send_buf, } } - /* start binomial reduce inter-communication between each SMP nodes: + /* start binomial reduce inter-communication between each SMP nodes: each node only have one process that can communicate to other nodes */ if ((phase > 0) && (phase < (pipelength + 1))) { if (intra_rank == 0) { @@ -136,7 +138,7 @@ int Coll_allreduce_smp_binomial_pipeline::allreduce(void *send_buf, } } - /* start binomial broadcast inter-communication between each SMP nodes: + /* start binomial broadcast inter-communication between each SMP nodes: each node only have one process that can communicate to other nodes */ if ((phase > 1) && (phase < (pipelength + 2))) { if (intra_rank == 0) { @@ -200,3 +202,5 @@ int Coll_allreduce_smp_binomial_pipeline::allreduce(void *send_buf, smpi_free_tmp_buffer(tmp_buf); return MPI_SUCCESS; } +} +}