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. */
7 #include "network_smpi.hpp"
8 #include "simgrid/sg_config.h"
10 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network);
12 xbt_dynar_t smpi_bw_factor = NULL;
13 xbt_dynar_t smpi_lat_factor = NULL;
15 typedef struct s_smpi_factor *smpi_factor_t;
16 typedef struct s_smpi_factor {
21 xbt_dict_t gap_lookup = NULL;
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;
30 static xbt_dynar_t parse_factor(const char *smpi_coef_string)
33 unsigned int iter = 0;
35 xbt_dynar_t smpi_factor, radical_elements, radical_elements2 = NULL;
37 smpi_factor = xbt_dynar_new(sizeof(s_smpi_factor_t), NULL);
38 radical_elements = xbt_str_split(smpi_coef_string, ";");
39 xbt_dynar_foreach(radical_elements, iter, value) {
41 radical_elements2 = xbt_str_split(value, ":");
42 if (xbt_dynar_length(radical_elements2) != 2)
43 surf_parse_error("Malformed radical for smpi factor!");
44 fact.factor = atol(xbt_dynar_get_as(radical_elements2, 0, char *));
45 fact.value = atof(xbt_dynar_get_as(radical_elements2, 1, char *));
46 xbt_dynar_push_as(smpi_factor, s_smpi_factor_t, fact);
47 XBT_DEBUG("smpi_factor:\t%ld : %f", fact.factor, fact.value);
48 xbt_dynar_free(&radical_elements2);
50 xbt_dynar_free(&radical_elements);
52 xbt_dynar_sort(smpi_factor, &factor_cmp);
53 xbt_dynar_foreach(smpi_factor, iter, fact) {
54 XBT_DEBUG("ordered smpi_factor:\t%ld : %f", fact.factor, fact.value);
64 /************************************************************************/
65 /* New model based on LV08 and experimental results of MPI ping-pongs */
66 /************************************************************************/
67 /* @Inproceedings{smpi_ipdps, */
68 /* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and Martin Quinson}, */
69 /* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
70 /* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
71 /* address={Anchorage (Alaska) USA}, */
75 void surf_network_model_init_SMPI(void)
78 if (surf_network_model)
80 surf_network_model = new NetworkSmpiModel();
81 net_define_callbacks();
82 xbt_dynar_push(model_list, &surf_network_model);
84 xbt_cfg_setdefault_double(_sg_cfg_set, "network/sender_gap", 10e-6);
85 xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S", 8775);
88 NetworkSmpiModel::NetworkSmpiModel()
89 : NetworkCm02Model() {
93 NetworkSmpiModel::~NetworkSmpiModel(){
95 xbt_dict_free(&gap_lookup);
98 xbt_dynar_free(&smpi_bw_factor);
99 smpi_bw_factor = NULL;
101 if (smpi_lat_factor) {
102 xbt_dynar_free(&smpi_lat_factor);
103 smpi_lat_factor = NULL;
107 void NetworkSmpiModel::gapAppend(double size, Link* link, NetworkAction *action)
109 const char *src = link->getName();
112 if (sg_sender_gap > 0.0) {
114 gap_lookup = xbt_dict_new_homogeneous(NULL);
116 fifo = (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup, src);
117 action->m_senderGap = 0.0;
118 if (fifo && xbt_fifo_size(fifo) > 0) {
119 /* Compute gap from last send */
121 (surf_action_network_CM02_t)
122 xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));*/
123 // bw = net_get_link_bandwidth(link);
124 action->m_senderGap = sg_sender_gap;
125 /* max(sg_sender_gap,last_action->sender.size / bw);*/
126 action->m_latency += action->m_senderGap;
128 /* Append action as last send */
129 /*action->sender.link_name = link->lmm_resource.generic_resource.name;
131 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
132 action->sender.link_name);
134 fifo = xbt_fifo_new();
135 xbt_dict_set(gap_lookup, action->sender.link_name, fifo, NULL);
137 action->sender.fifo_item = xbt_fifo_push(fifo, action);*/
138 action->m_senderSize = size;
142 void NetworkSmpiModel::gapRemove(Action *lmm_action)
146 NetworkCm02Action *action = static_cast<NetworkCm02Action*>(lmm_action);
148 if (sg_sender_gap > 0.0 && action->p_senderLinkName
149 && action->p_senderFifoItem) {
151 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
152 action->p_senderLinkName);
153 xbt_fifo_remove_item(fifo, action->p_senderFifoItem);
154 size = xbt_fifo_size(fifo);
157 xbt_dict_remove(gap_lookup, action->p_senderLinkName);
158 size = xbt_dict_length(gap_lookup);
160 xbt_dict_free(&gap_lookup);
166 double NetworkSmpiModel::bandwidthFactor(double size)
170 parse_factor(sg_cfg_get_string("smpi/bw_factor"));
172 unsigned int iter = 0;
173 s_smpi_factor_t fact;
175 xbt_dynar_foreach(smpi_bw_factor, iter, fact) {
176 if (size <= fact.factor) {
177 XBT_DEBUG("%f <= %ld return %f", size, fact.factor, current);
182 XBT_DEBUG("%f > %ld return %f", size, fact.factor, current);
187 double NetworkSmpiModel::latencyFactor(double size)
189 if (!smpi_lat_factor)
191 parse_factor(sg_cfg_get_string("smpi/lat_factor"));
193 unsigned int iter = 0;
194 s_smpi_factor_t fact;
196 xbt_dynar_foreach(smpi_lat_factor, iter, fact) {
197 if (size <= fact.factor) {
198 XBT_DEBUG("%f <= %ld return %f", size, fact.factor, current);
203 XBT_DEBUG("%f > %ld return %f", size, fact.factor, current);
208 double NetworkSmpiModel::bandwidthConstraint(double rate, double bound, double size)
210 return rate < 0 ? bound : min(bound, rate * bandwidthFactor(size));