1 /* A few crash tests for the maxmin library */
3 /* Copyright (c) 2004-2020. The SimGrid Team. All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
8 #include "src/kernel/lmm/maxmin.hpp"
9 #include "simgrid/s4u/Engine.hpp"
10 #include "xbt/module.h"
11 #include "xbt/random.hpp"
12 #include "xbt/sysdep.h" /* time manipulation for benchmarking */
13 #include "xbt/xbt_os_time.h"
21 static void test(int nb_cnst, int nb_var, int nb_elem, unsigned int pw_base_limit, unsigned int pw_max_limit,
22 double rate_no_limit, int max_share, int mode)
24 simgrid::kernel::lmm::Constraint** cnst = new simgrid::kernel::lmm::Constraint*[nb_cnst];
25 simgrid::kernel::lmm::Variable** var = new simgrid::kernel::lmm::Variable*[nb_var];
26 int* used = new int[nb_cnst];
28 /* We cannot activate the selective update as we pass nullptr as an Action when creating the variables */
29 simgrid::kernel::lmm::System* Sys = new simgrid::kernel::lmm::System(false);
31 for (int i = 0; i < nb_cnst; i++) {
32 cnst[i] = Sys->constraint_new(NULL, simgrid::xbt::random::uniform_real(0.0, 10.0));
34 if (rate_no_limit > simgrid::xbt::random::uniform_real(0.0, 1.0)) {
35 // Look at what happens when there is no concurrency limit
38 // Badly logarithmically random concurrency limit in [2^pw_base_limit+1,2^pw_base_limit+2^pw_max_limit]
39 l = (1 << pw_base_limit) + (1 << simgrid::xbt::random::uniform_int(0, pw_max_limit - 1));
41 cnst[i]->set_concurrency_limit(l);
44 for (int i = 0; i < nb_var; i++) {
45 var[i] = Sys->variable_new(NULL, 1.0, -1.0, nb_elem);
46 //Have a few variables with a concurrency share of two (e.g. cross-traffic in some cases)
47 short concurrency_share = static_cast<short>(1 + simgrid::xbt::random::uniform_int(0, max_share - 1));
48 var[i]->set_concurrency_share(concurrency_share);
50 for (int j = 0; j < nb_cnst; j++)
52 for (int j = 0; j < nb_elem; j++) {
55 k = simgrid::xbt::random::uniform_int(0, nb_cnst - 1);
56 } while (used[k] >= concurrency_share);
57 Sys->expand(cnst[k], var[i], simgrid::xbt::random::uniform_real(0.0, 1.5));
58 Sys->expand_add(cnst[k], var[i], simgrid::xbt::random::uniform_real(0.0, 1.5));
63 fprintf(stderr, "Starting to solve(%i)\n", simgrid::xbt::random::uniform_int(0, 999));
64 date = xbt_os_time() * 1000000;
66 date = xbt_os_time() * 1000000 - date;
69 fprintf(stderr,"Max concurrency:\n");
71 for (int i = 0; i < nb_cnst; i++) {
72 int j = cnst[i]->get_concurrency_maximum();
73 int k = cnst[i]->get_concurrency_limit();
74 xbt_assert(k<0 || j<=k);
77 fprintf(stderr,"(%i):%i/%i ",i,j,k);
78 cnst[i]->reset_concurrency_maximum();
79 xbt_assert(not cnst[i]->get_concurrency_maximum());
83 fprintf(stderr,"\nTotal maximum concurrency is %i\n",l);
88 for (int i = 0; i < nb_var; i++)
89 Sys->variable_free(var[i]);
96 unsigned int TestClasses [][4]=
97 //Nbcnst Nbvar Baselimit Maxlimit
98 {{ 10 ,10 ,1 ,2 }, //small
99 { 100 ,100 ,3 ,6 }, //medium
100 { 2000,2000 ,5 ,8 }, //big
101 { 20000,20000 ,7 ,10} //huge
104 int main(int argc, char **argv)
106 simgrid::s4u::Engine e(&argc, argv);
108 double rate_no_limit = 0.2;
109 double acc_date = 0.0;
110 double acc_date2 = 0.0;
114 fprintf(stderr, "Syntax: <small|medium|big|huge> <count> [test|debug|perf]\n");
119 if (not strcmp(argv[1], "small"))
121 else if (not strcmp(argv[1], "medium"))
123 else if (not strcmp(argv[1], "big"))
125 else if (not strcmp(argv[1], "huge"))
128 fprintf(stderr, "Unknown class \"%s\", aborting!\n",argv[1]);
133 int testcount=atoi(argv[2]);
135 //Show me everything (debug or performance)!
137 if(argc>=4 && strcmp(argv[3],"test")==0)
139 if(argc>=4 && strcmp(argv[3],"debug")==0)
141 if(argc>=4 && strcmp(argv[3],"perf")==0)
145 xbt_log_control_set("surf/maxmin.threshold:DEBUG surf/maxmin.fmt:\'[%r]: [%c/%p] %m%n\' "
146 "surf.threshold:DEBUG surf.fmt:\'[%r]: [%c/%p] %m%n\' ");
149 xbt_log_control_set("surf/maxmin.threshold:DEBUG surf.threshold:DEBUG");
151 unsigned int nb_cnst= TestClasses[testclass][0];
152 unsigned int nb_var= TestClasses[testclass][1];
153 unsigned int pw_base_limit= TestClasses[testclass][2];
154 unsigned int pw_max_limit= TestClasses[testclass][3];
155 unsigned int max_share = 2; // 1<<(pw_base_limit/2+1)
157 //If you want to test concurrency, you need nb_elem >> 2^pw_base_limit:
158 unsigned int nb_elem= (1<<pw_base_limit)+(1<<(8*pw_max_limit/10));
159 //Otherwise, just set it to a constant value (and set rate_no_limit to 1.0):
162 for(int i=0;i<testcount;i++){
163 simgrid::xbt::random::set_mersenne_seed(i + 1);
164 fprintf(stderr, "Starting %i: (%i)\n", i, simgrid::xbt::random::uniform_int(0, 999));
165 test(nb_cnst, nb_var, nb_elem, pw_base_limit, pw_max_limit, rate_no_limit,max_share,mode);
167 acc_date2+=date*date;
170 double mean_date = acc_date / static_cast<double>(testcount);
171 double stdev_date = sqrt(acc_date2 / static_cast<double>(testcount) - mean_date * mean_date);
173 fprintf(stderr, "%ix One shot execution time for a total of %u constraints, "
174 "%u variables with %u active constraint each, concurrency in [%i,%i] and max concurrency share %u\n",
175 testcount, nb_cnst, nb_var, nb_elem, (1 << pw_base_limit), (1 << pw_base_limit) + (1 << pw_max_limit),
178 fprintf(stderr, "Execution time: %g +- %g microseconds \n",mean_date, stdev_date);