1 /* Copyright (c) 2013-2015. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
12 #include "network_smpi.hpp"
13 #include "simgrid/sg_config.h"
14 #include "smpi/smpi_utils.hpp"
16 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network);
18 std::vector<s_smpi_factor_t> smpi_bw_factor;
19 std::vector<s_smpi_factor_t> smpi_lat_factor;
21 xbt_dict_t gap_lookup = nullptr;
27 /************************************************************************/
28 /* New model based on LV08 and experimental results of MPI ping-pongs */
29 /************************************************************************/
30 /* @Inproceedings{smpi_ipdps, */
31 /* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and Martin Quinson}, */
32 /* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
33 /* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
34 /* address={Anchorage (Alaska) USA}, */
38 void surf_network_model_init_SMPI()
40 if (surf_network_model)
42 surf_network_model = new simgrid::surf::NetworkSmpiModel();
43 all_existing_models->push_back(surf_network_model);
45 xbt_cfg_setdefault_double("network/sender-gap", 10e-6);
46 xbt_cfg_setdefault_double("network/weight-S", 8775);
52 NetworkSmpiModel::NetworkSmpiModel() : NetworkCm02Model()
57 NetworkSmpiModel::~NetworkSmpiModel()
59 xbt_dict_free(&gap_lookup);
62 double NetworkSmpiModel::bandwidthFactor(double size)
64 if (smpi_bw_factor.empty())
65 smpi_bw_factor = parse_factor(xbt_cfg_get_string("smpi/bw-factor"));
68 for (const auto& fact : smpi_bw_factor) {
69 if (size <= fact.factor) {
70 XBT_DEBUG("%f <= %zu return %f", size, fact.factor, current);
73 current = fact.values.front();
75 XBT_DEBUG("%f > %zu return %f", size, smpi_bw_factor.back().factor, current);
80 double NetworkSmpiModel::latencyFactor(double size)
82 if (smpi_lat_factor.empty())
83 smpi_lat_factor = parse_factor(xbt_cfg_get_string("smpi/lat-factor"));
86 for (const auto& fact : smpi_lat_factor) {
87 if (size <= fact.factor) {
88 XBT_DEBUG("%f <= %zu return %f", size, fact.factor, current);
91 current=fact.values.front();
93 XBT_DEBUG("%f > %zu return %f", size, smpi_lat_factor.back().factor, current);
98 double NetworkSmpiModel::bandwidthConstraint(double rate, double bound, double size)
100 return rate < 0 ? bound : std::min(bound, rate * bandwidthFactor(size));