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 "src/include/surf/surf.h"
10 #include "surf/maxmin.h"
11 #include "xbt/module.h"
12 #include "xbt/xbt_os_time.h"
13 #include "xbt/sysdep.h" /* time manipulation for benchmarking */
15 #define MYRANDMAX 1000
24 static int myrand(void) {
25 seedx=seedx * 16807 % 2147483647;
26 return (int32_t) seedx%1000;
29 static double float_random(double max)
31 return ((max * myrand()) / (MYRANDMAX + 1.0));
34 static unsigned int int_random(int max)
36 return (uint32_t) (((max * 1.0) * myrand()) / (MYRANDMAX + 1.0));
39 static void test(int nb_cnst, int nb_var, int nb_elem, unsigned int pw_base_limit, unsigned int pw_max_limit,
40 float rate_no_limit, int max_share, int mode)
42 lmm_system_t Sys = NULL;
43 lmm_constraint_t *cnst = xbt_new0(lmm_constraint_t, nb_cnst);
44 lmm_variable_t *var = xbt_new0(lmm_variable_t, nb_var);
45 int *used = xbt_new0(int, nb_cnst);
50 int concurrency_share;
52 Sys = lmm_system_new(1);
54 for (i = 0; i < nb_cnst; i++) {
55 cnst[i] = lmm_constraint_new(Sys, NULL, float_random(10.0));
56 if(rate_no_limit>float_random(1.0))
57 //Look at what happens when there is no concurrency limit
60 //Badly logarithmically random concurrency limit in [2^pw_base_limit+1,2^pw_base_limit+2^pw_max_limit]
61 l=(1<<pw_base_limit)+(1<<int_random(pw_max_limit));
63 lmm_constraint_concurrency_limit_set(cnst[i],l );
66 for (i = 0; i < nb_var; i++) {
67 var[i] = lmm_variable_new(Sys, NULL, 1.0, -1.0, nb_elem);
68 //Have a few variables with a concurrency share of two (e.g. cross-traffic in some cases)
69 concurrency_share=1+int_random(max_share);
70 lmm_variable_concurrency_share_set(var[i],concurrency_share);
72 for (j = 0; j < nb_cnst; j++)
74 for (j = 0; j < nb_elem; j++) {
75 k = int_random(nb_cnst);
76 if (used[k]>=concurrency_share) {
80 lmm_expand(Sys, cnst[k], var[i], float_random(1.5));
81 lmm_expand_add(Sys, cnst[k], var[i], float_random(1.5));
86 fprintf(stderr,"Starting to solve(%i)\n",myrand()%1000);
87 date = xbt_os_time() * 1000000;
89 date = xbt_os_time() * 1000000 - date;
92 fprintf(stderr,"Max concurrency:\n");
94 for (i = 0; i < nb_cnst; i++) {
95 j=lmm_constraint_concurrency_maximum_get(cnst[i]);
96 k=lmm_constraint_concurrency_limit_get(cnst[i]);
97 xbt_assert(k<0 || j<=k);
100 fprintf(stderr,"(%i):%i/%i ",i,j,k);
101 lmm_constraint_concurrency_maximum_reset(cnst[i]);
102 xbt_assert(!lmm_constraint_concurrency_maximum_get(cnst[i]));
104 fprintf(stderr,"\n");
106 fprintf(stderr,"\nTotal maximum concurrency is %i\n",l);
111 for (i = 0; i < nb_var; i++)
112 lmm_variable_free(Sys, var[i]);
113 lmm_system_free(Sys);
119 unsigned int TestClasses [][4]=
120 //Nbcnst Nbvar Baselimit Maxlimit
121 {{ 10 ,10 ,1 ,2 }, //small
122 { 100 ,100 ,3 ,6 }, //medium
123 { 2000,2000 ,5 ,8 }, //big
124 { 20000,20000 ,7 ,10} //huge
127 int main(int argc, char **argv)
129 float rate_no_limit=0.2;
135 fprintf(stderr, "Syntax: <small|medium|big|huge> <count> [test|debug|perf]\n");
140 if(!strcmp(argv[1],"small"))
142 else if(!strcmp(argv[1],"medium"))
144 else if(!strcmp(argv[1],"big"))
146 else if(!strcmp(argv[1],"huge"))
149 fprintf(stderr, "Unknown class \"%s\", aborting!\n",argv[1]);
154 int testcount=atoi(argv[2]);
156 //Show me everything (debug or performance)!
158 if(argc>=4 && strcmp(argv[3],"test")==0)
160 if(argc>=4 && strcmp(argv[3],"debug")==0)
162 if(argc>=4 && strcmp(argv[3],"perf")==0)
166 xbt_log_control_set("surf/maxmin.threshold:DEBUG surf/maxmin.fmt:\'[%r]: [%c/%p] %m%n\'\
167 surf.threshold:DEBUG surf.fmt:\'[%r]: [%c/%p] %m%n\' ");
170 xbt_log_control_set("surf/maxmin.threshold:DEBUG surf.threshold:DEBUG");
172 unsigned int nb_cnst= TestClasses[testclass][0];
173 unsigned int nb_var= TestClasses[testclass][1];
174 unsigned int pw_base_limit= TestClasses[testclass][2];
175 unsigned int pw_max_limit= TestClasses[testclass][3];
176 unsigned int max_share=2; //1<<(pw_base_limit/2+1);
178 //If you want to test concurrency, you need nb_elem >> 2^pw_base_limit:
179 unsigned int nb_elem= (1<<pw_base_limit)+(1<<(8*pw_max_limit/10));
180 //Otherwise, just set it to a constant value (and set rate_no_limit to 1.0):
183 surf_init(&argc, argv);
185 for(int i=0;i<testcount;i++){
187 fprintf(stderr, "Starting %i: (%i)\n",i,myrand()%1000);
188 test(nb_cnst, nb_var, nb_elem, pw_base_limit, pw_max_limit, rate_no_limit,max_share,mode);
190 acc_date2+=date*date;
193 float mean_date= acc_date/(float)testcount;
194 float stdev_date= sqrt(acc_date2/(float)testcount-mean_date*mean_date);
197 "%ix One shot execution time for a total of %d constraints, "
198 "%d variables with %d active constraint each, concurrency in [%i,%i] and max concurrency share %i\n",
199 testcount,nb_cnst, nb_var, nb_elem, (1<<pw_base_limit), (1<<pw_base_limit)+(1<<pw_max_limit), max_share);
201 fprintf(stderr, "Execution time: %g +- %g microseconds \n",mean_date, stdev_date);