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 { // FIXME: s_smpi_factor_multival (defined in smpi_base) should be used instead to dedupplicate this code
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!");
51 fact.factor = xbt_str_parse_int(xbt_dynar_get_as(radical_elements2, 0, char *),
52 bprintf("Invalid factor in chunk #%d: %%s", iter+1));
53 fact.value = xbt_str_parse_double(xbt_dynar_get_as(radical_elements2, 1, char *),
54 bprintf("Invalid factor value in chunk #%d: %%s", iter+1));
56 xbt_dynar_push_as(smpi_factor, s_smpi_factor_t, fact);
57 XBT_DEBUG("smpi_factor:\t%ld : %f", fact.factor, fact.value);
58 xbt_dynar_free(&radical_elements2);
60 xbt_dynar_free(&radical_elements);
62 xbt_dynar_sort(smpi_factor, &factor_cmp);
63 xbt_dynar_foreach(smpi_factor, iter, fact) {
64 XBT_DEBUG("ordered smpi_factor:\t%ld : %f", fact.factor, fact.value);
74 /************************************************************************/
75 /* New model based on LV08 and experimental results of MPI ping-pongs */
76 /************************************************************************/
77 /* @Inproceedings{smpi_ipdps, */
78 /* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and Martin Quinson}, */
79 /* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
80 /* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
81 /* address={Anchorage (Alaska) USA}, */
85 void surf_network_model_init_SMPI(void)
88 if (surf_network_model)
90 surf_network_model = new simgrid::surf::NetworkSmpiModel();
91 net_define_callbacks();
92 xbt_dynar_push(all_existing_models, &surf_network_model);
94 xbt_cfg_setdefault_double(_sg_cfg_set, "network/sender_gap", 10e-6);
95 xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S", 8775);
101 NetworkSmpiModel::NetworkSmpiModel()
102 : NetworkCm02Model() {
106 NetworkSmpiModel::~NetworkSmpiModel(){
107 xbt_dict_free(&gap_lookup);
108 xbt_dynar_free(&smpi_bw_factor);
109 xbt_dynar_free(&smpi_lat_factor);
112 void NetworkSmpiModel::gapAppend(double size, Link* link, NetworkAction *act)
114 const char *src = link->getName();
116 NetworkCm02Action *action= static_cast<NetworkCm02Action*>(act);
118 if (sg_sender_gap > 0.0) {
120 gap_lookup = xbt_dict_new_homogeneous(NULL);
122 fifo = (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup, src);
123 action->m_senderGap = 0.0;
124 if (fifo && xbt_fifo_size(fifo) > 0) {
125 /* Compute gap from last send */
127 (surf_action_network_CM02_t)
128 xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));*/
129 // bw = net_get_link_bandwidth(link);
130 action->m_senderGap = sg_sender_gap;
131 /* max(sg_sender_gap,last_action->sender.size / bw);*/
132 action->m_latency += action->m_senderGap;
134 /* Append action as last send */
135 /*action->sender.link_name = link->lmm_resource.generic_resource.name;
137 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
138 action->sender.link_name);
140 fifo = xbt_fifo_new();
141 xbt_dict_set(gap_lookup, action->sender.link_name, fifo, NULL);
143 action->sender.fifo_item = xbt_fifo_push(fifo, action);*/
144 action->m_senderSize = size;
148 void NetworkSmpiModel::gapRemove(Action *lmm_action)
152 NetworkCm02Action *action = static_cast<NetworkCm02Action*>(lmm_action);
154 if (sg_sender_gap > 0.0 && action->p_senderLinkName
155 && action->p_senderFifoItem) {
157 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
158 action->p_senderLinkName);
159 xbt_fifo_remove_item(fifo, action->p_senderFifoItem);
160 size = xbt_fifo_size(fifo);
163 xbt_dict_remove(gap_lookup, action->p_senderLinkName);
164 size = xbt_dict_length(gap_lookup);
166 xbt_dict_free(&gap_lookup);
172 double NetworkSmpiModel::bandwidthFactor(double size)
176 parse_factor(sg_cfg_get_string("smpi/bw_factor"));
178 unsigned int iter = 0;
179 s_smpi_factor_t fact;
181 xbt_dynar_foreach(smpi_bw_factor, iter, fact) {
182 if (size <= fact.factor) {
183 XBT_DEBUG("%f <= %ld return %f", size, fact.factor, current);
188 XBT_DEBUG("%f > %ld return %f", size, fact.factor, current);
193 double NetworkSmpiModel::latencyFactor(double size)
195 if (!smpi_lat_factor)
197 parse_factor(sg_cfg_get_string("smpi/lat_factor"));
199 unsigned int iter = 0;
200 s_smpi_factor_t fact;
202 xbt_dynar_foreach(smpi_lat_factor, iter, fact) {
203 if (size <= fact.factor) {
204 XBT_DEBUG("%f <= %ld return %f", size, fact.factor, current);
209 XBT_DEBUG("%f > %ld return %f", size, fact.factor, current);
214 double NetworkSmpiModel::bandwidthConstraint(double rate, double bound, double size)
216 return rate < 0 ? bound : std::min(bound, rate * bandwidthFactor(size));