derek/TheBandwidthBenchmark
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add affinity module.

Browse Source 
Enable configuration in config.mk file.
Introduce timer resolution report.
This commit is contained in:
Jan Eitzinger
2019-03-13 14:41:11 +01:00
parent 36c2adfc81
commit 4dadbdf4b3
6 changed files with 183 additions and 33 deletions
Download Patch File Download Diff File Expand all files Collapse all files

83
src/main.c
View File

@@ -35,13 +35,11 @@
#include <omp.h>
#endif
#include <timing.h>
#include <allocate.h>
#include <affinity.h>
#define ARRAY_ALIGNMENT 64
#define SIZE 20000000ull
#define NTIMES 10
# define HLINE "-------------------------------------------------------------\n"
#define HLINE "----------------------------------------------------------------------------\n"
#ifndef MIN
#define MIN(x,y) ((x)<(y)?(x):(y))
@@ -65,6 +63,12 @@ typedef enum benchmark {
NUMBENCH
} benchmark;
typedef struct {
char* label;
int words;
int flops;
} benchmarkType;
extern double init(double*, double, int);
extern double sum(double*, int);
extern double copy(double*, double*, int);
@@ -82,6 +86,7 @@ int main (int argc, char** argv)
size_t N = SIZE;
double *a, *b, *c, *d;
double scalar, tmp;
double E, S;
double avgtime[NUMBENCH],
maxtime[NUMBENCH],
@@ -89,33 +94,29 @@ int main (int argc, char** argv)
double times[NUMBENCH][NTIMES];
double bytes[NUMBENCH] = {
1 * sizeof(double) * N, /* init */
1 * sizeof(double) * N, /* sum */
2 * sizeof(double) * N, /* copy */
2 * sizeof(double) * N, /* update */
3 * sizeof(double) * N, /* triad */
3 * sizeof(double) * N, /* daxpy */
4 * sizeof(double) * N, /* striad */
4 * sizeof(double) * N /* sdaxpy */
benchmarkType benchmarks[NUMBENCH] = {
{"Init: ", 1, 0},
{"Sum: ", 1, 1},
{"Copy: ", 2, 0},
{"Update: ", 2, 1},
{"Triad: ", 3, 2},
{"Daxpy: ", 3, 2},
{"STriad: ", 4, 2},
{"SDaxpy: ", 4, 2}
};
char *label[NUMBENCH] = {
"Init: ",
"Sum: ",
"Copy: ",
"Update: ",
"Triad: ",
"Daxpy: ",
"STriad: ",
"SDaxpy: "};
a = (double*) allocate( ARRAY_ALIGNMENT, N * bytesPerWord );
b = (double*) allocate( ARRAY_ALIGNMENT, N * bytesPerWord );
c = (double*) allocate( ARRAY_ALIGNMENT, N * bytesPerWord );
d = (double*) allocate( ARRAY_ALIGNMENT, N * bytesPerWord );
printf(HLINE);
printf ("Total allocated datasize: %8.2f MB\n", 4.0 * bytesPerWord * N * 1.0E-06);
for (int i=0; i<NUMBENCH; i++) {
#ifdef VERBOSE_DATASIZE
printf ("\t%s: %8.2f MB\n", benchmarks[i].label, benchmarks[i].words * bytesPerWord * N * 1.0E-06);
#endif
avgtime[i] = 0;
maxtime[i] = 0;
mintime[i] = FLT_MAX;
@@ -126,12 +127,18 @@ int main (int argc, char** argv)
#pragma omp parallel
{
int k = omp_get_num_threads();
int i = omp_get_thread_num();
#pragma omp single
printf ("OpenMP enabled, running with %d threads\n", k);
#ifdef VERBOSE_AFFINITY
printf ("\tThread %d running on processor %d\n", i, affinity_getProcessorId());
#endif
}
#endif
S = getTimeStamp();
#pragma omp parallel for
for (int i=0; i<N; i++) {
a[i] = 2.0;
@@ -139,6 +146,11 @@ int main (int argc, char** argv)
c[i] = 0.5;
d[i] = 1.0;
}
E = getTimeStamp();
#ifdef VERBOSE_TIMER
printf ("Timer resolution %.2e ", getTimeResolution());
printf ("Ticks used %.0e\n", (E-S) / getTimeResolution());
#endif
scalar = 3.0;
@@ -164,15 +176,26 @@ int main (int argc, char** argv)
}
printf(HLINE);
printf("Function Rate (MB/s) Avg time Min time Max time\n");
printf("Function Rate(MB/s) Rate(MFlop/s) Avg time Min time Max time\n");
for (int j=0; j<NUMBENCH; j++) {
avgtime[j] = avgtime[j]/(double)(NTIMES-1);
double bytes = (double) benchmarks[j].words * sizeof(double) * N;
double flops = (double) benchmarks[j].flops * sizeof(double) * N;
printf("%s%11.4f %11.4f %11.4f %11.4f\n", label[j],
1.0E-06 * bytes[j]/mintime[j],
avgtime[j],
mintime[j],
maxtime[j]);
if (flops > 0){
printf("%s%11.2f %11.2f %11.4f %11.4f %11.4f\n", benchmarks[j].label,
1.0E-06 * bytes/mintime[j],
1.0E-06 * flops/mintime[j],
avgtime[j],
mintime[j],
maxtime[j]);
} else {
printf("%s%11.2f - %11.4f %11.4f %11.4f\n", benchmarks[j].label,
1.0E-06 * bytes/mintime[j],
avgtime[j],
mintime[j],
maxtime[j]);
}
}
printf(HLINE);