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[Revise] add latency and bandwidth in benchmark #9

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[Revise] add latency and bandwidth in benchmark #9

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25 changes: 20 additions & 5 deletions FastMemcpy.c
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Original file line number Diff line number Diff line change
Expand Up @@ -77,9 +77,16 @@ void benchmark(int dstalign, int srcalign, size_t size, int times)
free(DATA1);
free(DATA2);

printf("result(dst %s, src %s): memcpy_fast=%dms memcpy=%d ms\n",
dstalign? "aligned" : "unalign",
srcalign? "aligned" : "unalign", (int)t2, (int)t1);
float lat1 = (float)t1 * 1000000 / times;
float lat2 = (float)t2 * 1000000 / times;

float bw1 = (float)size * times / 1024 / 1024 / 1024 / t1 * 1000;
float bw2 = (float)size * times / 1024 / 1024 / 1024 / t2 * 1000;

printf("result(dst %s, src %s): \tlatency(memcpy_fast:%.1fns memcpy=%.1fns) \tbandwith(memcpy_fast:%.1fGB/s memcpy=%.1fGB/s)\n",
dstalign? "aligned" : "unalign",
srcalign? "aligned" : "unalign",
lat2, lat1, bw2, bw1);
}


Expand Down Expand Up @@ -126,8 +133,16 @@ void random_bench(int maxsize, int times)
memcpy_fast(A + offset1, B + offset2, size);
}
t2 = gettime() - t2;
printf("benchmark random access:\n");
printf("memcpy_fast=%dms memcpy=%dms\n\n", (int)t2, (int)t1);

float lat1 = (float)t1 * 1000000 / times;
float lat2 = (float)t2 * 1000000 / times;

float bw1 = (float)maxsize / 2 * times / 1024 / 1024 / 1024 / t1 * 1000;
float bw2 = (float)maxsize / 2 * times / 1024 / 1024 / 1024 / t2 * 1000;

printf("benchmark random access(size=1~%d bytes, times=%d):\n", maxsize, times);
printf("result: \tlatency(memcpy_fast:%.1fns memcpy=%.1fns) \tbandwith(memcpy_fast:%.1fGB/s memcpy=%.1fGB/s)\n",
lat2, lat1, bw2, bw1);
}


Expand Down
24 changes: 19 additions & 5 deletions FastMemcpy_Avx.c
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Original file line number Diff line number Diff line change
Expand Up @@ -79,10 +79,16 @@ void benchmark(int dstalign, int srcalign, size_t size, int times)

free(DATA1);
free(DATA2);
float lat1 = (float)t1 * 1000000 / times;
float lat2 = (float)t2 * 1000000 / times;

printf("result(dst %s, src %s): memcpy_fast=%dms memcpy=%d ms\n",
dstalign? "aligned" : "unalign",
srcalign? "aligned" : "unalign", (int)t2, (int)t1);
float bw1 = (float)size * times / 1024 / 1024 / 1024 / t1 * 1000;
float bw2 = (float)size * times / 1024 / 1024 / 1024 / t2 * 1000;

printf("result(dst %s, src %s): \tlatency(memcpy_fast:%.1fns memcpy=%.1fns) \tbandwith(memcpy_fast:%.1fGB/s memcpy=%.1fGB/s)\n",
dstalign? "aligned" : "unalign",
srcalign? "aligned" : "unalign",
lat2, lat1, bw2, bw1);
}


Expand Down Expand Up @@ -129,8 +135,16 @@ void random_bench(int maxsize, int times)
memcpy_fast(A + offset1, B + offset2, size);
}
t2 = gettime() - t2;
printf("benchmark random access:\n");
printf("memcpy_fast=%dms memcpy=%dms\n\n", (int)t2, (int)t1);

float lat1 = (float)t1 * 1000000 / times;
float lat2 = (float)t2 * 1000000 / times;

float bw1 = (float)maxsize / 2 * times / 1024 / 1024 / 1024 / t1 * 1000;
float bw2 = (float)maxsize / 2 * times / 1024 / 1024 / 1024 / t2 * 1000;

printf("benchmark random access(size=1~%d bytes, times=%d):\n", maxsize, times);
printf("result: \tlatency(memcpy_fast:%.1fns memcpy=%.1fns) \tbandwith(memcpy_fast:%.1fGB/s memcpy=%.1fGB/s)\n",
lat2, lat1, bw2, bw1);
}


Expand Down