histogram/benchmark/histogram_filling_root.cpp
Hans Dembinski 016532f011
Histogram fill method (#54)
huge refactor, various speed improvements, potential for further improvements and parallelization
2019-08-19 23:55:43 +02:00

68 lines
2.0 KiB
C++

// Copyright 2015-2019 Hans Dembinski
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt
// or copy at http://www.boost.org/LICENSE_1_0.txt)
#include <TH1I.h>
#include <TH2I.h>
#include <TH3I.h>
#include <THn.h>
#include <benchmark/benchmark.h>
#include "generator.hpp"
#include <boost/assert.hpp>
struct assert_check {
assert_check() {
BOOST_ASSERT(false); // don't run with asserts enabled
}
} _;
template <class Distribution>
static void fill_1d(benchmark::State& state) {
TH1I h("", "", 100, 0, 1);
generator<Distribution> gen;
for (auto _ : state) benchmark::DoNotOptimize(h.Fill(gen()));
state.SetItemsProcessed(state.iterations());
}
template <class Distribution>
static void fill_2d(benchmark::State& state) {
TH2I h("", "", 100, 0, 1, 100, 0, 1);
generator<Distribution> gen;
for (auto _ : state) benchmark::DoNotOptimize(h.Fill(gen(), gen()));
state.SetItemsProcessed(state.iterations() * 2);
}
template <class Distribution>
static void fill_3d(benchmark::State& state) {
TH3I h("", "", 100, 0, 1, 100, 0, 1, 100, 0, 1);
generator<Distribution> gen;
for (auto _ : state) benchmark::DoNotOptimize(h.Fill(gen(), gen(), gen()));
state.SetItemsProcessed(state.iterations() * 3);
}
template <class Distribution>
static void fill_6d(benchmark::State& state) {
int bin[] = {10, 10, 10, 10, 10, 10};
double min[] = {0, 0, 0, 0, 0, 0};
double max[] = {1, 1, 1, 1, 1, 1};
THnI h("", "", 6, bin, min, max);
generator<Distribution> gen;
for (auto _ : state) {
const double buf[6] = {gen(), gen(), gen(), gen(), gen(), gen()};
benchmark::DoNotOptimize(h.Fill(buf));
}
state.SetItemsProcessed(state.iterations() * 6);
}
BENCHMARK_TEMPLATE(fill_1d, uniform);
BENCHMARK_TEMPLATE(fill_2d, uniform);
BENCHMARK_TEMPLATE(fill_3d, uniform);
BENCHMARK_TEMPLATE(fill_6d, uniform);
BENCHMARK_TEMPLATE(fill_1d, normal);
BENCHMARK_TEMPLATE(fill_2d, normal);
BENCHMARK_TEMPLATE(fill_3d, normal);
BENCHMARK_TEMPLATE(fill_6d, normal);