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Added some final changes to benchmarking

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This commit is contained in:
jpekkila
2019-12-15 21:47:41 +02:00
parent 8bd81db63c
commit ecff5c3041
2 changed files with 39 additions and 10 deletions
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28
src/standalone/benchmark.cc
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@@ -49,14 +49,15 @@ smaller_than(const double& a, const double& b)
int
run_benchmark(const char* config_path)
{
const int nn = 256;
const int nn = 512;
const int num_iters = 100;
#define BENCH_STRONG_SCALING (1)
const int num_processes = acGetNumDevicesPerNode();
AcMeshInfo mesh_info;
load_config(config_path, &mesh_info);
mesh_info.int_params[AC_nx] = nn;
mesh_info.int_params[AC_ny] = mesh_info.int_params[AC_nx];
mesh_info.int_params[AC_nz] = mesh_info.int_params[AC_nx];
mesh_info.int_params[AC_nx] = mesh_info.int_params[AC_ny] = nn;
mesh_info.int_params[AC_nz] = BENCH_STRONG_SCALING ? nn : nn * num_processes;
update_config(&mesh_info);
AcMesh* mesh = acmesh_create(mesh_info);
@@ -74,6 +75,7 @@ run_benchmark(const char* config_path)
}
acSynchronize();
const AcReal dt = FLT_EPSILON;
printf("Using dt = %g\n", dt);
Timer total_time;
timer_reset(&total_time);
@@ -89,13 +91,25 @@ run_benchmark(const char* config_path)
}
acSynchronize();
const double ms_elapsed = timer_diff_nsec(total_time) / 1e6;
const double nth_percentile = 0.95;
const double nth_percentile = 0.90;
std::sort(results.begin(), results.end(), smaller_than);
printf("vertices: %d^3, iterations: %d\n", nn, num_iters);
printf("Total time: %f ms\n", ms_elapsed);
printf("%dth percentile per step: %f ms\n", int(100 * nth_percentile),
results[int(nth_percentile * num_iters)]);
printf("Time per step: %f ms\n", ms_elapsed / num_iters);
const size_t nth_index = int(nth_percentile * num_iters);
printf("%dth percentile per step: %f ms\n", int(100 * nth_percentile), results[nth_index]);
// Write out
char buf[256];
sprintf(buf, "nprocs_%d_result_%s.bench", num_processes,
BENCH_STRONG_SCALING ? "strong" : "weak");
FILE* fp = fopen(buf, "w");
ERRCHK_ALWAYS(fp);
fprintf(fp, "num_processes, percentile (%dth)\n", int(100 * nth_percentile));
fprintf(fp, "%d, %g\n", num_processes, results[nth_index]);
fclose(fp);
acQuit();
acmesh_destroy(mesh);