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Update benchmark statistical time function 

The function gettimeofday does not count the time，when testing the axpy small data volume use case.
Use the function clock_gettime to replace the gettimeofday function to count the time.
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MacChen02 2020-03-02 14:36:27 +08:00 committed by GitHub
parent 445ca2f418
commit 917d243580
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1 changed files with 5 additions and 5 deletions
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benchmark/axpy.c
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@ -128,7 +128,7 @@ int main(int argc, char *argv[]){
int to = 200;
int step = 1;
struct timeval start, stop;
struct timespec start, stop;
double time1,timeg;
argc--;argv++;
@ -175,13 +175,13 @@ int main(int argc, char *argv[]){
for(i = 0; i < m * COMPSIZE * abs(inc_y); i++){
y[i] = ((FLOAT) rand() / (FLOAT) RAND_MAX) - 0.5;
}
gettimeofday( &start, (struct timezone *)0);
clock_gettime( CLOCK_REALTIME, &start);
AXPY (&m, alpha, x, &inc_x, y, &inc_y );
gettimeofday( &stop, (struct timezone *)0);
clock_gettime( CLOCK_REALTIME, &stop);
time1 = (double)(stop.tv_sec - start.tv_sec) + (double)((stop.tv_usec - start.tv_usec)) * 1.e-6;
time1 = (double)(stop.tv_sec - start.tv_sec) + (double)((stop.tv_nsec - start.tv_nsec)) * 1.e-9;
timeg += time1;
@ -190,7 +190,7 @@ int main(int argc, char *argv[]){
timeg /= loops;
fprintf(stderr,
" %10.2f MFlops %10.6f sec\n",
" %10.2f MFlops %10.9f sec\n",
COMPSIZE * COMPSIZE * 2. * (double)m / timeg * 1.e-6, timeg);
}