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;
35 #include "src/surf/xml/platf.hpp" // FIXME: move that back to the parsing area
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 surf_parse_assert(xbt_dynar_length(radical_elements2) == 2,
49 "Malformed radical '%s' for smpi factor. I was expecting something like 'a:b'", value);
51 char *errmsg = bprintf("Invalid factor in chunk #%d: %%s", iter+1);
52 fact.factor = xbt_str_parse_int(xbt_dynar_get_as(radical_elements2, 0, char *), errmsg);
54 fact.value = xbt_str_parse_double(xbt_dynar_get_as(radical_elements2, 1, char *), errmsg);
55 errmsg = bprintf("Invalid factor value in chunk #%d: %%s", iter+1);
58 xbt_dynar_push_as(smpi_factor, s_smpi_factor_t, fact);
59 XBT_DEBUG("smpi_factor:\t%ld : %f", fact.factor, fact.value);
60 xbt_dynar_free(&radical_elements2);
62 xbt_dynar_free(&radical_elements);
63 xbt_dynar_sort(smpi_factor, &factor_cmp);
64 xbt_dynar_foreach(smpi_factor, iter, fact) {
65 XBT_DEBUG("ordered smpi_factor:\t%ld : %f", fact.factor, fact.value);
75 /************************************************************************/
76 /* New model based on LV08 and experimental results of MPI ping-pongs */
77 /************************************************************************/
78 /* @Inproceedings{smpi_ipdps, */
79 /* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and Martin Quinson}, */
80 /* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
81 /* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
82 /* address={Anchorage (Alaska) USA}, */
86 void surf_network_model_init_SMPI(void)
89 if (surf_network_model)
91 simgrid::surf::on_link.connect(netlink_parse_init);
92 surf_network_model = new simgrid::surf::NetworkSmpiModel();
93 xbt_dynar_push(all_existing_models, &surf_network_model);
95 xbt_cfg_setdefault_double(_sg_cfg_set, "network/sender_gap", 10e-6);
96 xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S", 8775);
102 NetworkSmpiModel::NetworkSmpiModel()
103 : NetworkCm02Model() {
107 NetworkSmpiModel::~NetworkSmpiModel(){
108 xbt_dict_free(&gap_lookup);
109 xbt_dynar_free(&smpi_bw_factor);
110 xbt_dynar_free(&smpi_lat_factor);
113 void NetworkSmpiModel::gapAppend(double size, Link* link, NetworkAction *act)
115 const char *src = link->getName();
117 NetworkCm02Action *action= static_cast<NetworkCm02Action*>(act);
119 if (sg_sender_gap > 0.0) {
121 gap_lookup = xbt_dict_new_homogeneous(NULL);
123 fifo = (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup, src);
124 action->m_senderGap = 0.0;
125 if (fifo && xbt_fifo_size(fifo) > 0) {
126 /* Compute gap from last send */
128 (surf_action_network_CM02_t)
129 xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));*/
130 // bw = net_get_link_bandwidth(link);
131 action->m_senderGap = sg_sender_gap;
132 /* max(sg_sender_gap,last_action->sender.size / bw);*/
133 action->m_latency += action->m_senderGap;
135 /* Append action as last send */
136 /*action->sender.link_name = link->lmm_resource.generic_resource.name;
138 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
139 action->sender.link_name);
141 fifo = xbt_fifo_new();
142 xbt_dict_set(gap_lookup, action->sender.link_name, fifo, NULL);
144 action->sender.fifo_item = xbt_fifo_push(fifo, action);*/
145 action->m_senderSize = size;
149 void NetworkSmpiModel::gapRemove(Action *lmm_action)
153 NetworkCm02Action *action = static_cast<NetworkCm02Action*>(lmm_action);
155 if (sg_sender_gap > 0.0 && action->p_senderLinkName
156 && action->p_senderFifoItem) {
158 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
159 action->p_senderLinkName);
160 xbt_fifo_remove_item(fifo, action->p_senderFifoItem);
161 size = xbt_fifo_size(fifo);
164 xbt_dict_remove(gap_lookup, action->p_senderLinkName);
165 size = xbt_dict_length(gap_lookup);
167 xbt_dict_free(&gap_lookup);
173 double NetworkSmpiModel::bandwidthFactor(double size)
177 parse_factor(sg_cfg_get_string("smpi/bw_factor"));
179 unsigned int iter = 0;
180 s_smpi_factor_t fact;
182 xbt_dynar_foreach(smpi_bw_factor, iter, fact) {
183 if (size <= fact.factor) {
184 XBT_DEBUG("%f <= %ld return %f", size, fact.factor, current);
189 XBT_DEBUG("%f > %ld return %f", size, fact.factor, current);
194 double NetworkSmpiModel::latencyFactor(double size)
196 if (!smpi_lat_factor)
198 parse_factor(sg_cfg_get_string("smpi/lat_factor"));
200 unsigned int iter = 0;
201 s_smpi_factor_t fact;
203 xbt_dynar_foreach(smpi_lat_factor, iter, fact) {
204 if (size <= fact.factor) {
205 XBT_DEBUG("%f <= %ld return %f", size, fact.factor, current);
210 XBT_DEBUG("%f > %ld return %f", size, fact.factor, current);
215 double NetworkSmpiModel::bandwidthConstraint(double rate, double bound, double size)
217 return rate < 0 ? bound : std::min(bound, rate * bandwidthFactor(size));