1 /* Copyright (c) 2013-2021. 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(res_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 /* FIXME[donassolo]: this smells bad, but works
35 * (the constructor saves its pointer in all_existing_models and models_by_type :O).
36 * We need a manager for these models */
37 new simgrid::kernel::resource::NetworkSmpiModel();
39 simgrid::config::set_default<double>("network/weight-S", 8775);
46 NetworkSmpiModel::NetworkSmpiModel() : NetworkCm02Model()
48 /* Do not add this into all_existing_models: our ancestor already does so */
51 double NetworkSmpiModel::get_bandwidth_factor(double size)
53 if (smpi_bw_factor.empty())
54 smpi_bw_factor = parse_factor(config::get_value<std::string>("smpi/bw-factor"));
57 for (auto const& fact : smpi_bw_factor) {
58 if (size <= fact.factor) {
59 XBT_DEBUG("%f <= %zu return %f", size, fact.factor, current);
62 current = fact.values.front();
64 XBT_DEBUG("%f > %zu return %f", size, smpi_bw_factor.back().factor, current);
69 double NetworkSmpiModel::get_latency_factor(double size)
71 if (smpi_lat_factor.empty())
72 smpi_lat_factor = parse_factor(config::get_value<std::string>("smpi/lat-factor"));
75 for (auto const& fact : smpi_lat_factor) {
76 if (size <= fact.factor) {
77 XBT_DEBUG("%f <= %zu return %f", size, fact.factor, current);
80 current = fact.values.front();
82 XBT_DEBUG("%f > %zu return %f", size, smpi_lat_factor.back().factor, current);
87 double NetworkSmpiModel::get_bandwidth_constraint(double rate, double bound, double size)
89 return rate < 0 ? bound : std::min(bound, rate * get_bandwidth_factor(size));
91 } // namespace resource
93 } // namespace simgrid