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 unsigned int int_random(int max)
35 return (u_int32_t) (((max * 1.0) * myrand()) / (MYRANDMAX + 1.0));
38 static void test(int nb_cnst, int nb_var, int nb_elem, unsigned int pw_base_limit, unsigned int pw_max_limit,
39 float rate_no_limit, 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);
49 int concurrency_share;
51 Sys = lmm_system_new(1);
53 for (i = 0; i < nb_cnst; i++) {
54 cnst[i] = lmm_constraint_new(Sys, NULL, float_random(10.0));
55 if(rate_no_limit>float_random(1.0))
56 //Look at what happens when there is no concurrency limit
59 //Badly logarithmically random concurrency limit in [2^pw_base_limit+1,2^pw_base_limit+2^pw_max_limit]
60 l=(1<<pw_base_limit)+(1<<int_random(pw_max_limit));
62 lmm_constraint_concurrency_limit_set(cnst[i],l );
65 for (i = 0; i < nb_var; i++) {
66 var[i] = lmm_variable_new(Sys, NULL, 1.0, -1.0, nb_elem);
67 //Have a few variables with a concurrency share of two (e.g. cross-traffic in some cases)
68 concurrency_share=1+int_random(max_share);
69 lmm_variable_concurrency_share_set(var[i],concurrency_share);
71 for (j = 0; j < nb_cnst; j++)
73 for (j = 0; j < nb_elem; j++) {
74 k = int_random(nb_cnst);
75 if (used[k]>=concurrency_share) {
79 lmm_expand(Sys, cnst[k], var[i], float_random(1.5));
80 lmm_expand_add(Sys, cnst[k], var[i], float_random(1.5));
85 printf("Starting to solve(%i)\n",myrand()%1000);
86 date = xbt_os_time() * 1000000;
88 date = xbt_os_time() * 1000000 - date;
91 printf("Max concurrency:\n");
93 for (i = 0; i < nb_cnst; i++) {
94 j=lmm_constraint_concurrency_maximum_get(cnst[i]);
95 k=lmm_constraint_concurrency_limit_get(cnst[i]);
96 xbt_assert(k<0 || j<=k);
99 printf("(%i):%i/%i ",i,j,k);
100 lmm_constraint_concurrency_maximum_reset(cnst[i]);
101 xbt_assert(!lmm_constraint_concurrency_maximum_get(cnst[i]));
105 printf("\nTotal maximum concurrency is %i\n",l);
110 for (i = 0; i < nb_var; i++)
111 lmm_variable_free(Sys, var[i]);
112 lmm_system_free(Sys);
118 unsigned int TestClasses [][4]=
119 //Nbcnst Nbvar Baselimit Maxlimit
120 {{ 10 ,10 ,1 ,2 }, //small
121 { 100 ,100 ,3 ,6 }, //medium
122 { 2000,2000 ,5 ,8 }, //big
123 { 20000,20000 ,7 ,10} //huge
126 int main(int argc, char **argv)
128 float rate_no_limit=0.2;
134 fprintf(stderr, "Syntax: <small|medium|big|huge> <count> [test|debug|perf]\n");
139 if(!strcmp(argv[1],"small"))
141 else if(!strcmp(argv[1],"medium"))
143 else if(!strcmp(argv[1],"big"))
145 else if(!strcmp(argv[1],"huge"))
148 fprintf(stderr, "Unknown class \"%s\", aborting!\n",argv[1]);
153 int testcount=atoi(argv[2]);
155 //Show me everything (debug or performance)!
157 if(argc>=4 && strcmp(argv[3],"test")==0)
159 if(argc>=4 && strcmp(argv[3],"debug")==0)
161 if(argc>=4 && strcmp(argv[3],"perf")==0)
165 xbt_log_control_set("surf/maxmin.threshold:DEBUG surf/maxmin.fmt:\'[%r]: [%c/%p] %m%n\'\
166 surf.threshold:DEBUG surf.fmt:\'[%r]: [%c/%p] %m%n\' ");
169 xbt_log_control_set("surf/maxmin.threshold:DEBUG surf.threshold:DEBUG");
171 unsigned int nb_cnst= TestClasses[testclass][0];
172 unsigned int nb_var= TestClasses[testclass][1];
173 unsigned int pw_base_limit= TestClasses[testclass][2];
174 unsigned int pw_max_limit= TestClasses[testclass][3];
175 unsigned int max_share=2; //1<<(pw_base_limit/2+1);
177 //If you want to test concurrency, you need nb_elem >> 2^pw_base_limit:
178 unsigned int nb_elem= (1<<pw_base_limit)+(1<<(8*pw_max_limit/10));
179 //Otherwise, just set it to a constant value (and set rate_no_limit to 1.0):
182 xbt_init(&argc, argv);
184 for(int i=0;i<testcount;i++){
186 fprintf(stderr, "Starting %i: (%i)\n",i,myrand()%1000);
187 test(nb_cnst, nb_var, nb_elem, pw_base_limit, pw_max_limit, rate_no_limit,max_share,mode);
189 acc_date2+=date*date;
192 float mean_date= acc_date/(float)testcount;
193 float stdev_date= sqrt(acc_date2/(float)testcount-mean_date*mean_date);
196 "%ix One shot execution time for a total of %d constraints, "
197 "%d variables with %d active constraint each, concurrency in [%i,%i] and max concurrency share %i\n",
198 testcount,nb_cnst, nb_var, nb_elem, (1<<pw_base_limit), (1<<pw_base_limit)+(1<<pw_max_limit), max_share);
200 fprintf(stderr, "Execution time: %g +- %g microseconds \n",mean_date, stdev_date);