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-rw-r--r--libtommath/demo/timing.c118
1 files changed, 71 insertions, 47 deletions
diff --git a/libtommath/demo/timing.c b/libtommath/demo/timing.c
index bb3be52..1bd8489 100644
--- a/libtommath/demo/timing.c
+++ b/libtommath/demo/timing.c
@@ -1,5 +1,6 @@
#include <tommath.h>
#include <time.h>
+#include <unistd.h>
ulong64 _tt;
@@ -10,6 +11,12 @@ ulong64 _tt;
#define SLEEP
#endif
+#ifdef LTM_TIMING_REAL_RAND
+#define LTM_TIMING_RAND_SEED time(NULL)
+#else
+#define LTM_TIMING_RAND_SEED 23
+#endif
+
void ndraw(mp_int * a, char *name)
{
@@ -44,10 +51,12 @@ static ulong64 TIMFUNC(void)
{
#if defined __GNUC__
#if defined(__i386__) || defined(__x86_64__)
- unsigned long long a;
- __asm__ __volatile__("rdtsc\nmovl %%eax,%0\nmovl %%edx,4+%0\n"::
- "m"(a):"%eax", "%edx");
- return a;
+ /* version from http://www.mcs.anl.gov/~kazutomo/rdtsc.html
+ * the old code always got a warning issued by gcc, clang did not complain...
+ */
+ unsigned hi, lo;
+ __asm__ __volatile__ ("rdtsc" : "=a"(lo), "=d"(hi));
+ return ((ulong64)lo)|( ((ulong64)hi)<<32);
#else /* gcc-IA64 version */
unsigned long result;
__asm__ __volatile__("mov %0=ar.itc":"=r"(result)::"memory");
@@ -78,12 +87,24 @@ static ulong64 TIMFUNC(void)
//#define DO8(x) DO4(x); DO4(x);
//#define DO(x) DO8(x); DO8(x);
+#ifdef TIMING_NO_LOGS
+#define FOPEN(a, b) NULL
+#define FPRINTF(a,b,c,d)
+#define FFLUSH(a)
+#define FCLOSE(a) (void)(a)
+#else
+#define FOPEN(a,b) fopen(a,b)
+#define FPRINTF(a,b,c,d) fprintf(a,b,c,d)
+#define FFLUSH(a) fflush(a)
+#define FCLOSE(a) fclose(a)
+#endif
+
int main(void)
{
ulong64 tt, gg, CLK_PER_SEC;
FILE *log, *logb, *logc, *logd;
mp_int a, b, c, d, e, f;
- int n, cnt, ix, old_kara_m, old_kara_s;
+ int n, cnt, ix, old_kara_m, old_kara_s, old_toom_m, old_toom_s;
unsigned rr;
mp_init(&a);
@@ -93,19 +114,15 @@ int main(void)
mp_init(&e);
mp_init(&f);
- srand(time(NULL));
-
+ srand(LTM_TIMING_RAND_SEED);
- /* temp. turn off TOOM */
- TOOM_MUL_CUTOFF = TOOM_SQR_CUTOFF = 100000;
CLK_PER_SEC = TIMFUNC();
sleep(1);
CLK_PER_SEC = TIMFUNC() - CLK_PER_SEC;
printf("CLK_PER_SEC == %llu\n", CLK_PER_SEC);
- goto exptmod;
- log = fopen("logs/add.log", "w");
+ log = FOPEN("logs/add.log", "w");
for (cnt = 8; cnt <= 128; cnt += 8) {
SLEEP;
mp_rand(&a, cnt);
@@ -121,12 +138,12 @@ int main(void)
} while (++rr < 100000);
printf("Adding\t\t%4d-bit => %9llu/sec, %9llu cycles\n",
mp_count_bits(&a), CLK_PER_SEC / tt, tt);
- fprintf(log, "%d %9llu\n", cnt * DIGIT_BIT, tt);
- fflush(log);
+ FPRINTF(log, "%d %9llu\n", cnt * DIGIT_BIT, tt);
+ FFLUSH(log);
}
- fclose(log);
+ FCLOSE(log);
- log = fopen("logs/sub.log", "w");
+ log = FOPEN("logs/sub.log", "w");
for (cnt = 8; cnt <= 128; cnt += 8) {
SLEEP;
mp_rand(&a, cnt);
@@ -143,22 +160,26 @@ int main(void)
printf("Subtracting\t\t%4d-bit => %9llu/sec, %9llu cycles\n",
mp_count_bits(&a), CLK_PER_SEC / tt, tt);
- fprintf(log, "%d %9llu\n", cnt * DIGIT_BIT, tt);
- fflush(log);
+ FPRINTF(log, "%d %9llu\n", cnt * DIGIT_BIT, tt);
+ FFLUSH(log);
}
- fclose(log);
+ FCLOSE(log);
/* do mult/square twice, first without karatsuba and second with */
- multtest:
old_kara_m = KARATSUBA_MUL_CUTOFF;
old_kara_s = KARATSUBA_SQR_CUTOFF;
- for (ix = 0; ix < 2; ix++) {
- printf("With%s Karatsuba\n", (ix == 0) ? "out" : "");
-
- KARATSUBA_MUL_CUTOFF = (ix == 0) ? 9999 : old_kara_m;
- KARATSUBA_SQR_CUTOFF = (ix == 0) ? 9999 : old_kara_s;
-
- log = fopen((ix == 0) ? "logs/mult.log" : "logs/mult_kara.log", "w");
+ /* currently toom-cook cut-off is too high to kick in, so we just use the karatsuba values */
+ old_toom_m = old_kara_m;
+ old_toom_s = old_kara_m;
+ for (ix = 0; ix < 3; ix++) {
+ printf("With%s Karatsuba, With%s Toom\n", (ix == 0) ? "out" : "", (ix == 1) ? "out" : "");
+
+ KARATSUBA_MUL_CUTOFF = (ix == 1) ? old_kara_m : 9999;
+ KARATSUBA_SQR_CUTOFF = (ix == 1) ? old_kara_s : 9999;
+ TOOM_MUL_CUTOFF = (ix == 2) ? old_toom_m : 9999;
+ TOOM_SQR_CUTOFF = (ix == 2) ? old_toom_s : 9999;
+
+ log = FOPEN((ix == 0) ? "logs/mult.log" : (ix == 1) ? "logs/mult_kara.log" : "logs/mult_toom.log", "w");
for (cnt = 4; cnt <= 10240 / DIGIT_BIT; cnt += 2) {
SLEEP;
mp_rand(&a, cnt);
@@ -174,12 +195,12 @@ int main(void)
} while (++rr < 100);
printf("Multiplying\t%4d-bit => %9llu/sec, %9llu cycles\n",
mp_count_bits(&a), CLK_PER_SEC / tt, tt);
- fprintf(log, "%d %9llu\n", mp_count_bits(&a), tt);
- fflush(log);
+ FPRINTF(log, "%d %9llu\n", mp_count_bits(&a), tt);
+ FFLUSH(log);
}
- fclose(log);
+ FCLOSE(log);
- log = fopen((ix == 0) ? "logs/sqr.log" : "logs/sqr_kara.log", "w");
+ log = FOPEN((ix == 0) ? "logs/sqr.log" : (ix == 1) ? "logs/sqr_kara.log" : "logs/sqr_toom.log", "w");
for (cnt = 4; cnt <= 10240 / DIGIT_BIT; cnt += 2) {
SLEEP;
mp_rand(&a, cnt);
@@ -194,13 +215,12 @@ int main(void)
} while (++rr < 100);
printf("Squaring\t%4d-bit => %9llu/sec, %9llu cycles\n",
mp_count_bits(&a), CLK_PER_SEC / tt, tt);
- fprintf(log, "%d %9llu\n", mp_count_bits(&a), tt);
- fflush(log);
+ FPRINTF(log, "%d %9llu\n", mp_count_bits(&a), tt);
+ FFLUSH(log);
}
- fclose(log);
+ FCLOSE(log);
}
- exptmod:
{
char *primes[] = {
@@ -235,10 +255,10 @@ int main(void)
"1214855636816562637502584060163403830270705000634713483015101384881871978446801224798536155406895823305035467591632531067547890948695117172076954220727075688048751022421198712032848890056357845974246560748347918630050853933697792254955890439720297560693579400297062396904306270145886830719309296352765295712183040773146419022875165382778007040109957609739589875590885701126197906063620133954893216612678838507540777138437797705602453719559017633986486649523611975865005712371194067612263330335590526176087004421363598470302731349138773205901447704682181517904064735636518462452242791676541725292378925568296858010151852326316777511935037531017413910506921922450666933202278489024521263798482237150056835746454842662048692127173834433089016107854491097456725016327709663199738238442164843147132789153725513257167915555162094970853584447993125488607696008169807374736711297007473812256272245489405898470297178738029484459690836250560495461579533254473316340608217876781986188705928270735695752830825527963838355419762516246028680280988020401914551825487349990306976304093109384451438813251211051597392127491464898797406789175453067960072008590614886532333015881171367104445044718144312416815712216611576221546455968770801413440778423979",
NULL
};
- log = fopen("logs/expt.log", "w");
- logb = fopen("logs/expt_dr.log", "w");
- logc = fopen("logs/expt_2k.log", "w");
- logd = fopen("logs/expt_2kl.log", "w");
+ log = FOPEN("logs/expt.log", "w");
+ logb = FOPEN("logs/expt_dr.log", "w");
+ logc = FOPEN("logs/expt_2k.log", "w");
+ logd = FOPEN("logs/expt_2kl.log", "w");
for (n = 0; primes[n]; n++) {
SLEEP;
mp_read_radix(&a, primes[n], 10);
@@ -271,17 +291,17 @@ int main(void)
}
printf("Exponentiating\t%4d-bit => %9llu/sec, %9llu cycles\n",
mp_count_bits(&a), CLK_PER_SEC / tt, tt);
- fprintf(n < 4 ? logd : (n < 9) ? logc : (n < 16) ? logb : log,
+ FPRINTF(n < 4 ? logd : (n < 9) ? logc : (n < 16) ? logb : log,
"%d %9llu\n", mp_count_bits(&a), tt);
}
}
- fclose(log);
- fclose(logb);
- fclose(logc);
- fclose(logd);
+ FCLOSE(log);
+ FCLOSE(logb);
+ FCLOSE(logc);
+ FCLOSE(logd);
- log = fopen("logs/invmod.log", "w");
- for (cnt = 4; cnt <= 128; cnt += 4) {
+ log = FOPEN("logs/invmod.log", "w");
+ for (cnt = 4; cnt <= 32; cnt += 4) {
SLEEP;
mp_rand(&a, cnt);
mp_rand(&b, cnt);
@@ -307,9 +327,13 @@ int main(void)
}
printf("Inverting mod\t%4d-bit => %9llu/sec, %9llu cycles\n",
mp_count_bits(&a), CLK_PER_SEC / tt, tt);
- fprintf(log, "%d %9llu\n", cnt * DIGIT_BIT, tt);
+ FPRINTF(log, "%d %9llu\n", cnt * DIGIT_BIT, tt);
}
- fclose(log);
+ FCLOSE(log);
return 0;
}
+
+/* $Source$ */
+/* $Revision$ */
+/* $Date$ */
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