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;
23 static int factor_cmp(const void *pa, const void *pb)
25 return (((s_smpi_factor_t*)pa)->factor > ((s_smpi_factor_t*)pb)->factor) ? 1 :
26 (((s_smpi_factor_t*)pa)->factor < ((s_smpi_factor_t*)pb)->factor) ? -1 : 0;
29 #include "src/surf/xml/platf.hpp" // FIXME: move that back to the parsing area
35 /************************************************************************/
36 /* New model based on LV08 and experimental results of MPI ping-pongs */
37 /************************************************************************/
38 /* @Inproceedings{smpi_ipdps, */
39 /* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and Martin Quinson}, */
40 /* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
41 /* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
42 /* address={Anchorage (Alaska) USA}, */
46 void surf_network_model_init_SMPI()
48 if (surf_network_model)
50 surf_network_model = new simgrid::surf::NetworkSmpiModel();
51 all_existing_models->push_back(surf_network_model);
53 xbt_cfg_setdefault_double("network/sender-gap", 10e-6);
54 xbt_cfg_setdefault_double("network/weight-S", 8775);
60 NetworkSmpiModel::NetworkSmpiModel() : NetworkCm02Model()
65 NetworkSmpiModel::~NetworkSmpiModel()
67 xbt_dict_free(&gap_lookup);
70 void NetworkSmpiModel::gapAppend(double size, Link* link, NetworkAction *act)
72 const char *src = link->getName();
74 NetworkCm02Action *action= static_cast<NetworkCm02Action*>(act);
76 if (sg_sender_gap > 0.0) {
78 gap_lookup = xbt_dict_new_homogeneous(nullptr);
80 fifo = (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup, src);
81 action->senderGap_ = 0.0;
82 if (fifo && xbt_fifo_size(fifo) > 0) {
83 /* Compute gap from last send */
85 (surf_action_network_CM02_t)
86 xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));*/
87 // bw = net_get_link_bandwidth(link);
88 action->senderGap_ = sg_sender_gap;
89 /* max(sg_sender_gap,last_action->sender.size / bw);*/
90 action->latency_ += action->senderGap_;
92 /* Append action as last send */
93 /*action->sender.link_name = link->lmm_resource.generic_resource.name;
95 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
96 action->sender.link_name);
98 fifo = xbt_fifo_new();
99 xbt_dict_set(gap_lookup, action->sender.link_name, fifo, nullptr);
101 action->sender.fifo_item = xbt_fifo_push(fifo, action);*/
102 action->senderSize_ = size;
106 void NetworkSmpiModel::gapRemove(Action *lmm_action)
110 NetworkCm02Action *action = static_cast<NetworkCm02Action*>(lmm_action);
112 if (sg_sender_gap > 0.0 && action->senderLinkName_
113 && action->senderFifoItem_) {
115 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
116 action->senderLinkName_);
117 xbt_fifo_remove_item(fifo, action->senderFifoItem_);
118 size = xbt_fifo_size(fifo);
121 xbt_dict_remove(gap_lookup, action->senderLinkName_);
122 size = xbt_dict_length(gap_lookup);
124 xbt_dict_free(&gap_lookup);
130 double NetworkSmpiModel::bandwidthFactor(double size)
132 if (smpi_bw_factor.empty())
133 smpi_bw_factor = parse_factor(xbt_cfg_get_string("smpi/bw-factor"));
136 for (auto fact: smpi_bw_factor) {
137 if (size <= fact.factor) {
138 XBT_DEBUG("%f <= %zu return %f", size, fact.factor, current);
141 current=fact.values.front();
143 XBT_DEBUG("%f > %zu return %f", size, smpi_bw_factor.back().factor, current);
148 double NetworkSmpiModel::latencyFactor(double size)
150 if (smpi_lat_factor.empty())
151 smpi_lat_factor = parse_factor(xbt_cfg_get_string("smpi/lat-factor"));
154 for (auto fact: smpi_lat_factor) {
155 if (size <= fact.factor) {
156 XBT_DEBUG("%f <= %zu return %f", size, fact.factor, current);
159 current=fact.values.front();
161 XBT_DEBUG("%f > %zu return %f", size, smpi_lat_factor.back().factor, current);
166 double NetworkSmpiModel::bandwidthConstraint(double rate, double bound, double size)
168 return rate < 0 ? bound : std::min(bound, rate * bandwidthFactor(size));