1 /* Copyright (c) 2013-2022. 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 "src/kernel/resource/NetworkModelFactors.hpp"
7 #include "simgrid/sg_config.hpp"
8 #include "src/kernel/resource/FactorSet.hpp"
10 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(res_network);
16 namespace simgrid::kernel::resource {
17 static FactorSet cfg_latency_factor("network/latency-factor");
18 static FactorSet cfg_bandwidth_factor("network/bandwidth-factor");
20 config::Flag<std::string> cfg_latency_factor_str(
21 "network/latency-factor", std::initializer_list<const char*>{"smpi/lat-factor"},
22 "Correction factor to apply to the provided latency (default value overridden by network model)", "1.0");
23 static config::Flag<std::string> cfg_bandwidth_factor_str(
24 "network/bandwidth-factor", std::initializer_list<const char*>{"smpi/bw-factor"},
25 "Correction factor to apply to the provided bandwidth (default value overridden by network model)", "1.0");
27 double NetworkModelFactors::get_bandwidth_factor() const
29 xbt_assert(not bw_factor_cb_,
30 "Cannot access the global bandwidth factor since a callback is used. Please go for the advanced API.");
32 if (not cfg_bandwidth_factor.is_initialized())
33 cfg_bandwidth_factor.parse(cfg_bandwidth_factor_str.get());
35 return cfg_bandwidth_factor(0);
38 double NetworkModelFactors::get_latency_factor() const
40 xbt_assert(not lat_factor_cb_,
41 "Cannot access the global latency factor since a callback is used. Please go for the advanced API.");
43 if (not cfg_latency_factor.is_initialized()) // lazy initiaization to avoid initialization fiasco
44 cfg_latency_factor.parse(cfg_latency_factor_str.get());
46 return cfg_latency_factor(0);
49 double NetworkModelFactors::get_latency_factor(double size, const s4u::Host* src, const s4u::Host* dst,
50 const std::vector<s4u::Link*>& links,
51 const std::unordered_set<s4u::NetZone*>& netzones) const
54 return lat_factor_cb_(size, src, dst, links, netzones);
56 if (not cfg_latency_factor.is_initialized()) // lazy initiaization to avoid initialization fiasco
57 cfg_latency_factor.parse(cfg_latency_factor_str.get());
59 return cfg_latency_factor(size);
62 double NetworkModelFactors::get_bandwidth_factor(double size, const s4u::Host* src, const s4u::Host* dst,
63 const std::vector<s4u::Link*>& links,
64 const std::unordered_set<s4u::NetZone*>& netzones) const
67 return bw_factor_cb_(size, src, dst, links, netzones);
69 if (not cfg_bandwidth_factor.is_initialized())
70 cfg_bandwidth_factor.parse(cfg_bandwidth_factor_str.get());
72 return cfg_bandwidth_factor(size);
75 void NetworkModelFactors::set_lat_factor_cb(const std::function<NetworkFactorCb>& cb)
78 throw std::invalid_argument("NetworkModelFactors: Invalid callback");
79 if (not simgrid::config::is_default("network/latency-factor"))
80 throw std::invalid_argument("You must choose between network/latency-factor and callback configuration.");
85 void NetworkModelFactors::set_bw_factor_cb(const std::function<NetworkFactorCb>& cb)
88 throw std::invalid_argument("NetworkModelFactors: Invalid callback");
89 if (not simgrid::config::is_default("network/bandwidth-factor"))
90 throw std::invalid_argument("You must choose between network/bandwidth-factor and callback configuration.");
95 } // namespace simgrid::kernel::resource