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. */
13 #include "network_smpi.hpp"
14 #include "simgrid/sg_config.h"
16 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network);
18 xbt_dynar_t smpi_bw_factor = NULL;
19 xbt_dynar_t smpi_lat_factor = NULL;
21 typedef struct s_smpi_factor *smpi_factor_t;
22 typedef struct s_smpi_factor {
27 xbt_dict_t gap_lookup = NULL;
29 static int factor_cmp(const void *pa, const void *pb)
31 return (((s_smpi_factor_t*)pa)->factor > ((s_smpi_factor_t*)pb)->factor) ? 1 :
32 (((s_smpi_factor_t*)pa)->factor < ((s_smpi_factor_t*)pb)->factor) ? -1 : 0;
36 static xbt_dynar_t parse_factor(const char *smpi_coef_string)
39 unsigned int iter = 0;
41 xbt_dynar_t smpi_factor, radical_elements, radical_elements2 = NULL;
43 smpi_factor = xbt_dynar_new(sizeof(s_smpi_factor_t), NULL);
44 radical_elements = xbt_str_split(smpi_coef_string, ";");
45 xbt_dynar_foreach(radical_elements, iter, value) {
47 radical_elements2 = xbt_str_split(value, ":");
48 if (xbt_dynar_length(radical_elements2) != 2)
49 surf_parse_error("Malformed radical for smpi factor!");
50 fact.factor = atol(xbt_dynar_get_as(radical_elements2, 0, char *));
51 fact.value = atof(xbt_dynar_get_as(radical_elements2, 1, char *));
52 xbt_dynar_push_as(smpi_factor, s_smpi_factor_t, fact);
53 XBT_DEBUG("smpi_factor:\t%ld : %f", fact.factor, fact.value);
54 xbt_dynar_free(&radical_elements2);
56 xbt_dynar_free(&radical_elements);
58 xbt_dynar_sort(smpi_factor, &factor_cmp);
59 xbt_dynar_foreach(smpi_factor, iter, fact) {
60 XBT_DEBUG("ordered smpi_factor:\t%ld : %f", fact.factor, fact.value);
70 /************************************************************************/
71 /* New model based on LV08 and experimental results of MPI ping-pongs */
72 /************************************************************************/
73 /* @Inproceedings{smpi_ipdps, */
74 /* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and Martin Quinson}, */
75 /* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
76 /* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
77 /* address={Anchorage (Alaska) USA}, */
81 void surf_network_model_init_SMPI(void)
84 if (surf_network_model)
86 surf_network_model = new simgrid::surf::NetworkSmpiModel();
87 net_define_callbacks();
88 xbt_dynar_push(all_existing_models, &surf_network_model);
90 xbt_cfg_setdefault_double(_sg_cfg_set, "network/sender_gap", 10e-6);
91 xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S", 8775);
97 NetworkSmpiModel::NetworkSmpiModel()
98 : NetworkCm02Model() {
102 NetworkSmpiModel::~NetworkSmpiModel(){
104 xbt_dict_free(&gap_lookup);
106 if (smpi_bw_factor) {
107 xbt_dynar_free(&smpi_bw_factor);
108 smpi_bw_factor = NULL;
110 if (smpi_lat_factor) {
111 xbt_dynar_free(&smpi_lat_factor);
112 smpi_lat_factor = NULL;
116 void NetworkSmpiModel::gapAppend(double size, Link* link, NetworkAction *act)
118 const char *src = link->getName();
120 NetworkCm02Action *action= static_cast<NetworkCm02Action*>(act);
122 if (sg_sender_gap > 0.0) {
124 gap_lookup = xbt_dict_new_homogeneous(NULL);
126 fifo = (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup, src);
127 action->m_senderGap = 0.0;
128 if (fifo && xbt_fifo_size(fifo) > 0) {
129 /* Compute gap from last send */
131 (surf_action_network_CM02_t)
132 xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));*/
133 // bw = net_get_link_bandwidth(link);
134 action->m_senderGap = sg_sender_gap;
135 /* max(sg_sender_gap,last_action->sender.size / bw);*/
136 action->m_latency += action->m_senderGap;
138 /* Append action as last send */
139 /*action->sender.link_name = link->lmm_resource.generic_resource.name;
141 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
142 action->sender.link_name);
144 fifo = xbt_fifo_new();
145 xbt_dict_set(gap_lookup, action->sender.link_name, fifo, NULL);
147 action->sender.fifo_item = xbt_fifo_push(fifo, action);*/
148 action->m_senderSize = size;
152 void NetworkSmpiModel::gapRemove(Action *lmm_action)
156 NetworkCm02Action *action = static_cast<NetworkCm02Action*>(lmm_action);
158 if (sg_sender_gap > 0.0 && action->p_senderLinkName
159 && action->p_senderFifoItem) {
161 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
162 action->p_senderLinkName);
163 xbt_fifo_remove_item(fifo, action->p_senderFifoItem);
164 size = xbt_fifo_size(fifo);
167 xbt_dict_remove(gap_lookup, action->p_senderLinkName);
168 size = xbt_dict_length(gap_lookup);
170 xbt_dict_free(&gap_lookup);
176 double NetworkSmpiModel::bandwidthFactor(double size)
180 parse_factor(sg_cfg_get_string("smpi/bw_factor"));
182 unsigned int iter = 0;
183 s_smpi_factor_t fact;
185 xbt_dynar_foreach(smpi_bw_factor, iter, fact) {
186 if (size <= fact.factor) {
187 XBT_DEBUG("%f <= %ld return %f", size, fact.factor, current);
192 XBT_DEBUG("%f > %ld return %f", size, fact.factor, current);
197 double NetworkSmpiModel::latencyFactor(double size)
199 if (!smpi_lat_factor)
201 parse_factor(sg_cfg_get_string("smpi/lat_factor"));
203 unsigned int iter = 0;
204 s_smpi_factor_t fact;
206 xbt_dynar_foreach(smpi_lat_factor, iter, fact) {
207 if (size <= fact.factor) {
208 XBT_DEBUG("%f <= %ld return %f", size, fact.factor, current);
213 XBT_DEBUG("%f > %ld return %f", size, fact.factor, current);
218 double NetworkSmpiModel::bandwidthConstraint(double rate, double bound, double size)
220 return rate < 0 ? bound : std::min(bound, rate * bandwidthFactor(size));