1 /* A few crash tests for the maxmin library */
3 /* Copyright (c) 2004-2019. 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/msg.h"
10 #include "xbt/module.h"
11 #include "xbt/sysdep.h" /* time manipulation for benchmarking */
12 #include "xbt/xbt_os_time.h"
22 seedx=seedx * 16807 % 2147483647;
23 return static_cast<int32_t>(seedx%1000);
26 static double float_random(double max)
28 constexpr double MYRANDMAX = 1000.0;
29 return ((max * myrand()) / (MYRANDMAX + 1.0));
32 static unsigned int int_random(int max)
34 return static_cast<uint32_t>(float_random(max));
37 static void test(int nb_cnst, int nb_var, int nb_elem, unsigned int pw_base_limit, unsigned int pw_max_limit,
38 float rate_no_limit, int max_share, int mode)
40 simgrid::kernel::lmm::Constraint** cnst = new simgrid::kernel::lmm::Constraint*[nb_cnst];
41 simgrid::kernel::lmm::Variable** var = new simgrid::kernel::lmm::Variable*[nb_var];
42 int* used = new int[nb_cnst];
44 /* We cannot activate the selective update as we pass nullptr as an Action when creating the variables */
45 simgrid::kernel::lmm::System* Sys = new simgrid::kernel::lmm::System(false);
47 for (int i = 0; i < nb_cnst; i++) {
48 cnst[i] = Sys->constraint_new(NULL, float_random(10.0));
50 if(rate_no_limit>float_random(1.0))
51 //Look at what happens when there is no concurrency limit
54 //Badly logarithmically random concurrency limit in [2^pw_base_limit+1,2^pw_base_limit+2^pw_max_limit]
55 l=(1<<pw_base_limit)+(1<<int_random(pw_max_limit));
57 cnst[i]->set_concurrency_limit(l);
60 for (int i = 0; i < nb_var; i++) {
61 var[i] = Sys->variable_new(NULL, 1.0, -1.0, nb_elem);
62 //Have a few variables with a concurrency share of two (e.g. cross-traffic in some cases)
63 int concurrency_share = 1 + int_random(max_share);
64 var[i]->set_concurrency_share(concurrency_share);
66 for (int j = 0; j < nb_cnst; j++)
68 for (int j = 0; j < nb_elem; j++) {
69 int k = int_random(nb_cnst);
70 if (used[k]>=concurrency_share) {
74 Sys->expand(cnst[k], var[i], float_random(1.5));
75 Sys->expand_add(cnst[k], var[i], float_random(1.5));
80 fprintf(stderr,"Starting to solve(%i)\n",myrand()%1000);
81 date = xbt_os_time() * 1000000;
83 date = xbt_os_time() * 1000000 - date;
86 fprintf(stderr,"Max concurrency:\n");
88 for (int i = 0; i < nb_cnst; i++) {
89 int j = cnst[i]->get_concurrency_maximum();
90 int k = cnst[i]->get_concurrency_limit();
91 xbt_assert(k<0 || j<=k);
94 fprintf(stderr,"(%i):%i/%i ",i,j,k);
95 cnst[i]->reset_concurrency_maximum();
96 xbt_assert(not cnst[i]->get_concurrency_maximum());
100 fprintf(stderr,"\nTotal maximum concurrency is %i\n",l);
105 for (int i = 0; i < nb_var; i++)
106 Sys->variable_free(var[i]);
113 unsigned int TestClasses [][4]=
114 //Nbcnst Nbvar Baselimit Maxlimit
115 {{ 10 ,10 ,1 ,2 }, //small
116 { 100 ,100 ,3 ,6 }, //medium
117 { 2000,2000 ,5 ,8 }, //big
118 { 20000,20000 ,7 ,10} //huge
121 int main(int argc, char **argv)
123 MSG_init(&argc, argv);
125 float rate_no_limit=0.2;
131 fprintf(stderr, "Syntax: <small|medium|big|huge> <count> [test|debug|perf]\n");
136 if (not strcmp(argv[1], "small"))
138 else if (not strcmp(argv[1], "medium"))
140 else if (not strcmp(argv[1], "big"))
142 else if (not strcmp(argv[1], "huge"))
145 fprintf(stderr, "Unknown class \"%s\", aborting!\n",argv[1]);
150 int testcount=atoi(argv[2]);
152 //Show me everything (debug or performance)!
154 if(argc>=4 && strcmp(argv[3],"test")==0)
156 if(argc>=4 && strcmp(argv[3],"debug")==0)
158 if(argc>=4 && strcmp(argv[3],"perf")==0)
162 xbt_log_control_set("surf/maxmin.threshold:DEBUG surf/maxmin.fmt:\'[%r]: [%c/%p] %m%n\' "
163 "surf.threshold:DEBUG surf.fmt:\'[%r]: [%c/%p] %m%n\' ");
166 xbt_log_control_set("surf/maxmin.threshold:DEBUG surf.threshold:DEBUG");
168 unsigned int nb_cnst= TestClasses[testclass][0];
169 unsigned int nb_var= TestClasses[testclass][1];
170 unsigned int pw_base_limit= TestClasses[testclass][2];
171 unsigned int pw_max_limit= TestClasses[testclass][3];
172 unsigned int max_share = 2; // 1<<(pw_base_limit/2+1)
174 //If you want to test concurrency, you need nb_elem >> 2^pw_base_limit:
175 unsigned int nb_elem= (1<<pw_base_limit)+(1<<(8*pw_max_limit/10));
176 //Otherwise, just set it to a constant value (and set rate_no_limit to 1.0):
179 for(int i=0;i<testcount;i++){
181 fprintf(stderr, "Starting %i: (%i)\n",i,myrand()%1000);
182 test(nb_cnst, nb_var, nb_elem, pw_base_limit, pw_max_limit, rate_no_limit,max_share,mode);
184 acc_date2+=date*date;
187 float mean_date= acc_date/(float)testcount;
188 float stdev_date= sqrt(acc_date2/(float)testcount-mean_date*mean_date);
190 fprintf(stderr, "%ix One shot execution time for a total of %u constraints, "
191 "%u variables with %u active constraint each, concurrency in [%i,%i] and max concurrency share %u\n",
192 testcount, nb_cnst, nb_var, nb_elem, (1 << pw_base_limit), (1 << pw_base_limit) + (1 << pw_max_limit),
195 fprintf(stderr, "Execution time: %g +- %g microseconds \n",mean_date, stdev_date);