1 /* Copyright (c) 2013-2014. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 /* Copy to src/include/xbt/ folder */
9 /* Injecting timings for previously benchmarked code blocks */
11 /* Use functions from bench.h to benchmark execution time of the desired block,
12 * then Rhist.R script to read all timings and produce histograms
13 * and finally inject.h to inject values instead of executing block*/
23 #include "xbt/RngStream.h"
25 #include "xbt/sysdep.h"
27 #define MAX_LINE_INJ 10000
30 * Histogram entry for each measured block
31 * Each entry is guarded inside xbt dictionary which is read from the file */
32 typedef struct xbt_hist {
41 extern RngStream get_randgen(void);
42 typedef RngStream (*get_randgen_func_t)(void);
44 extern xbt_dict_t get_dict(void);
45 typedef xbt_dict_t (*get_dict_func_t)(void);
47 static inline void xbt_inject_init(char *inputfile);
48 static inline void inject_init_starpu(char *inputfile, xbt_dict_t *dict, RngStream *rng);
50 static inline double xbt_inject_time(char *key);
51 static inline double xbt_mean_time(char *key);
52 static inline double xbt_hist_time(char *key);
54 /* Initializing xbt dictionary for SMPI version, reading xbt_hist_t entries line by line */
55 static inline void xbt_inject_init(char *inputfile)
57 xbt_dict_t mydict = get_dict();
58 FILE* fpInput = fopen(inputfile, "r");
60 printf("Error while opening the inputfile");
68 if (fgets(line, 200, fpInput) == NULL)
69 printf("Error input file is empty!");//Skipping first row
70 while (fgets(line, 200, fpInput) != NULL)
72 key = strtok(line, "\t");
74 data = xbt_dict_get_or_null(mydict, key);
76 printf("Error, data with that block_id already exists!");
78 data = (xbt_hist_t *) xbt_new(xbt_hist_t, 1);
81 data->counts = atoi(strtok(NULL, "\t"));
82 data->mean = atof(strtok(NULL, "\t"));
83 data->n = atoi(strtok(NULL, "\t"));
85 data->breaks = (double*) malloc(sizeof(double) * data->n);
86 data->percentage = (double*) malloc(sizeof(double) * (data->n - 1));
87 for (i = 0; i < data->n; i++)
88 data->breaks[i] = atof(strtok(NULL, "\t"));
89 for (i = 0; i < (data->n - 1); i++)
90 data->percentage[i] = atof(strtok(NULL, "\t"));
92 xbt_dict_set(mydict, key, data, NULL);
96 /* Initializing xbt dictionary for StarPU version, reading xbt_hist_t entries line by line */
97 static inline void inject_init_starpu(char *inputfile, xbt_dict_t *dict, RngStream *rng)
99 *dict = xbt_dict_new_homogeneous(free);
100 *rng = RngStream_CreateStream("Randgen1");
101 unsigned long seed[] = {134, 233445, 865, 2634, 424242, 876541};
102 RngStream_SetSeed(*rng, seed);
104 xbt_dict_t mydict = *dict;
106 FILE* fpInput = fopen(inputfile, "r");
109 printf("Error while opening the inputfile");
113 fseek(fpInput, 0, 0);
115 char line[MAX_LINE_INJ];
120 if (fgets(line, MAX_LINE_INJ, fpInput) == NULL)
122 printf("Error input file is empty!");//Skipping first row
127 while (fgets(line, MAX_LINE_INJ, fpInput) != NULL)
129 key = strtok(line, "\t");
131 data = xbt_dict_get_or_null(mydict, key);
133 printf("Error, data with that block_id already exists!");
135 data = (xbt_hist_t *) xbt_new(xbt_hist_t, 1);
136 data->block_id = key;
137 data->counts = atoi(strtok(NULL, "\t"));
138 data->mean = atof(strtok(NULL, "\t"));
139 data->n = atoi(strtok(NULL, "\t"));
140 data->breaks = (double*) malloc(sizeof(double) * data->n);
141 data->percentage = (double*) malloc(sizeof(double) * (data->n - 1));
143 for (i = 0; i < data->n; i++)
144 data->breaks[i] = atof(strtok(NULL, "\t"));
145 for (i = 0; i < (data->n - 1); i++)
147 data->percentage[i] = atof(strtok(NULL, "\t"));
150 xbt_dict_set(mydict, key, data, NULL);
155 static inline double xbt_inject_time(char *key)
157 return xbt_hist_time(key);
158 //return xbt_mean_time(key);
161 /* Injecting mean value */
162 static inline double xbt_mean_time(char *key)
164 xbt_dict_t mydict = get_dict();
165 xbt_hist_t* data = xbt_dict_get_or_null(mydict, key);
169 printf("Warning: element with specified key does not exist (%s)\n",key);
176 /* Injecting random value from the histogram */
177 static inline double xbt_hist_time(char *key)
180 double left = 0, right = 1;
182 RngStream rng_stream;
185 xbt_dict_t mydict = get_dict();
186 xbt_hist_t* data = xbt_dict_get_or_null(mydict, key);
190 printf("Warning: element with specified key does not exist (%s)\n",key);
194 /* Choosing random interval of the histogram */
195 rng_stream = get_randgen();
196 r = RngStream_RandU01(rng_stream);
197 for (i = 0; i < (data->n - 1); i++)
199 left += (i == 0) ? 0 : data->percentage[i - 1];
200 right += data->percentage[i];
201 if (left < r && r <= right)
205 /* Choosing random value inside the interval of the histogram */
206 r2 = RngStream_RandU01(rng_stream);
207 timer = data->breaks[k] + r2 * (data->breaks[k + 1] - data->breaks[k]);
212 #endif // __INJECT_H__