1 /* Copyright (c) 2013-2019. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "network_smpi.hpp"
7 #include "simgrid/sg_config.hpp"
8 #include "smpi_utils.hpp"
9 #include "src/surf/surf_interface.hpp"
10 #include "surf/surf.hpp"
12 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network);
14 std::vector<s_smpi_factor_t> smpi_bw_factor;
15 std::vector<s_smpi_factor_t> smpi_lat_factor;
21 /************************************************************************/
22 /* New model based on LV08 and experimental results of MPI ping-pongs */
23 /************************************************************************/
24 /* @Inproceedings{smpi_ipdps, */
25 /* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and Martin Quinson}, */
26 /* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
27 /* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
28 /* address={Anchorage (Alaska) USA}, */
32 void surf_network_model_init_SMPI()
34 if (surf_network_model)
36 surf_network_model = new simgrid::kernel::resource::NetworkSmpiModel();
38 simgrid::config::set_default<double>("network/weight-S", 8775);
45 NetworkSmpiModel::NetworkSmpiModel() : NetworkCm02Model()
47 /* Do not add this into all_existing_models: our ancestor already does so */
50 NetworkSmpiModel::~NetworkSmpiModel() = default;
52 double NetworkSmpiModel::get_bandwidth_factor(double size)
54 if (smpi_bw_factor.empty())
55 smpi_bw_factor = parse_factor(simgrid::config::get_value<std::string>("smpi/bw-factor"));
58 for (auto const& fact : smpi_bw_factor) {
59 if (size <= fact.factor) {
60 XBT_DEBUG("%f <= %zu return %f", size, fact.factor, current);
63 current = fact.values.front();
65 XBT_DEBUG("%f > %zu return %f", size, smpi_bw_factor.back().factor, current);
70 double NetworkSmpiModel::get_latency_factor(double size)
72 if (smpi_lat_factor.empty())
73 smpi_lat_factor = parse_factor(simgrid::config::get_value<std::string>("smpi/lat-factor"));
76 for (auto const& fact : smpi_lat_factor) {
77 if (size <= fact.factor) {
78 XBT_DEBUG("%f <= %zu return %f", size, fact.factor, current);
81 current = fact.values.front();
83 XBT_DEBUG("%f > %zu return %f", size, smpi_lat_factor.back().factor, current);
88 double NetworkSmpiModel::get_bandwidth_constraint(double rate, double bound, double size)
90 return rate < 0 ? bound : std::min(bound, rate * get_bandwidth_factor(size));
102 } // namespace simgrid