1 /* A crash few tests for the maxmin library */
3 /* Copyright (c) 2004-2015. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
9 #include "surf/maxmin.h"
10 #include "xbt/module.h"
11 #include "xbt/xbt_os_time.h"
12 #include "xbt/sysdep.h" /* time manipulation for benchmarking */
14 #define MYRANDMAX 1000
23 static int myrand(void) {
24 seedx=seedx * 16807 % 2147483647;
25 return (int32_t) seedx%1000;
28 static double float_random(double max)
30 return ((max * myrand()) / (MYRANDMAX + 1.0));
33 static int int_random(int max)
35 return (int32_t) (((max * 1.0) * myrand()) / (MYRANDMAX + 1.0));
38 static void test(int nb_cnst, int nb_var, int nb_elem, int pw_base_limit, int pw_max_limit, float rate_no_limit,
39 int max_share, int mode)
41 lmm_system_t Sys = NULL;
42 lmm_constraint_t *cnst = xbt_new0(lmm_constraint_t, nb_cnst);
43 lmm_variable_t *var = xbt_new0(lmm_variable_t, nb_var);
44 int *used = xbt_new0(int, nb_cnst);
46 int concurrency_share;
48 Sys = lmm_system_new(1);
50 for (i = 0; i < nb_cnst; i++) {
51 cnst[i] = lmm_constraint_new(Sys, NULL, float_random(10.0));
52 if(rate_no_limit>float_random(1.0))
53 //Look at what happens when there is no concurrency limit
56 //Badly logarithmically random concurrency limit in [2^pw_base_limit+1,2^pw_base_limit+2^pw_max_limit]
57 l=(1<<pw_base_limit)+(1<<int_random(pw_max_limit));
59 lmm_constraint_concurrency_limit_set(cnst[i],l );
62 for (i = 0; i < nb_var; i++) {
63 var[i] = lmm_variable_new(Sys, NULL, 1.0, -1.0, nb_elem);
64 //Have a few variables with a concurrency share of two (e.g. cross-traffic in some cases)
65 concurrency_share=1+int_random(max_share);
66 lmm_variable_concurrency_share_set(var[i],concurrency_share);
68 for (j = 0; j < nb_cnst; j++)
70 for (j = 0; j < nb_elem; j++) {
71 k = int_random(nb_cnst);
72 if (used[k]>=concurrency_share) {
76 lmm_expand(Sys, cnst[k], var[i], float_random(1.5));
77 lmm_expand_add(Sys, cnst[k], var[i], float_random(1.5));
82 printf("Starting to solve(%i)\n",myrand()%1000);
83 date = xbt_os_time() * 1000000;
85 date = xbt_os_time() * 1000000 - date;
88 printf("Max concurrency:\n");
90 for (i = 0; i < nb_cnst; i++) {
91 j=lmm_constraint_concurrency_maximum_get(cnst[i]);
92 k=lmm_constraint_concurrency_limit_get(cnst[i]);
93 xbt_assert(k<0 || j<=k);
96 printf("(%i):%i/%i ",i,j,k);
97 lmm_constraint_concurrency_maximum_reset(cnst[i]);
98 xbt_assert(!lmm_constraint_concurrency_maximum_get(cnst[i]));
102 printf("\nTotal maximum concurrency is %i\n",l);
107 for (i = 0; i < nb_var; i++)
108 lmm_variable_free(Sys, var[i]);
109 lmm_system_free(Sys);
115 int TestClasses [][4]=
116 //Nbcnst Nbvar Baselimit Maxlimit
117 {{ 10 ,10 ,1 ,2 }, //small
118 { 100 ,100 ,3 ,6 }, //medium
119 { 2000,2000 ,5 ,8 }, //big
120 { 20000,20000 ,7 ,10} //huge
123 int main(int argc, char **argv)
125 int nb_cnst, nb_var,nb_elem,pw_base_limit,pw_max_limit,max_share;
126 float rate_no_limit=0.2;
127 float acc_date=0,acc_date2=0;
128 int testclass,mode,testcount;
132 printf("Syntax: <small|medium|big|huge> <count> [test|debug|perf]\n");
137 if(!strcmp(argv[1],"small"))
139 else if(!strcmp(argv[1],"medium"))
141 else if(!strcmp(argv[1],"big"))
143 else if(!strcmp(argv[1],"huge"))
146 printf("Unknown class \"%s\", aborting!\n",argv[1]);
151 testcount=atoi(argv[2]);
153 //Show me everything (debug or performance)!
155 if(argc>=4 && strcmp(argv[3],"test")==0)
157 if(argc>=4 && strcmp(argv[3],"debug")==0)
159 if(argc>=4 && strcmp(argv[3],"perf")==0)
163 xbt_log_control_set("surf/maxmin.threshold:DEBUG surf/maxmin.fmt:\'[%r]: [%c/%p] %m%n\'\
164 surf.threshold:DEBUG surf.fmt:\'[%r]: [%c/%p] %m%n\' ");
167 xbt_log_control_set("surf/maxmin.threshold:DEBUG surf.threshold:DEBUG");
169 nb_cnst= TestClasses[testclass][0];
170 nb_var= TestClasses[testclass][1];
171 pw_base_limit= TestClasses[testclass][2];
172 pw_max_limit= TestClasses[testclass][3];
173 max_share=2; //1<<(pw_base_limit/2+1);
175 //If you want to test concurrency, you need nb_elem >> 2^pw_base_limit:
176 nb_elem= (1<<pw_base_limit)+(1<<(8*pw_max_limit/10));
177 //Otherwise, just set it to a constant value (and set rate_no_limit to 1.0):
180 xbt_init(&argc, argv);
182 for(i=0;i<testcount;i++){
184 printf("Starting %i: (%i)\n",i,myrand()%1000);
185 test(nb_cnst, nb_var, nb_elem, pw_base_limit, pw_max_limit, rate_no_limit,max_share,mode);
187 acc_date2+=date*date;
190 float mean_date= acc_date/(float)testcount;
191 float stdev_date= sqrt(acc_date2/(float)testcount-mean_date*mean_date);
193 printf("%ix One shot execution time for a total of %d constraints, "
194 "%d variables with %d active constraint each, concurrency in [%i,%i] and max concurrency share %i\n",
195 testcount,nb_cnst, nb_var, nb_elem, (1<<pw_base_limit), (1<<pw_base_limit)+(1<<pw_max_limit), max_share);
197 printf("Execution time: %g +- %g microseconds \n",mean_date, stdev_date);