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125 lines
4.5 KiB
C++
125 lines
4.5 KiB
C++
// Copyright 2015-2019 Hans Dembinski
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt
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// or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/histogram.hpp>
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#include "../test/utility_histogram.hpp"
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#include <cassert>
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#include <cstdio>
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#include <ctime>
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#include <memory>
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#include <random>
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using namespace boost::histogram;
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using reg = axis::regular<>;
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std::unique_ptr<double[]> random_array(unsigned n, int type) {
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std::unique_ptr<double[]> r(new double[n]);
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std::default_random_engine gen(1);
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if (type) { // type == 1
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std::normal_distribution<> d(0.5, 0.3);
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for (unsigned i = 0; i < n; ++i) r[i] = d(gen);
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} else { // type == 0
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std::uniform_real_distribution<> d(0.0, 1.0);
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for (unsigned i = 0; i < n; ++i) r[i] = d(gen);
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}
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return r;
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}
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double baseline(unsigned n) {
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auto r = random_array(n, 0);
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auto t = clock();
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for (auto it = r.get(), end = r.get() + n; it != end;) {
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volatile auto x = *it++;
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(void)(x);
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}
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return (double(clock()) - t) / CLOCKS_PER_SEC / n * 1e9;
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}
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template <typename Tag, typename Storage>
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double compare_1d(unsigned n, int distrib) {
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auto r = random_array(n, distrib);
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auto h = make_s(Tag(), Storage(), reg(100, 0, 1));
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auto t = clock();
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for (auto it = r.get(), end = r.get() + n; it != end;) h(*it++);
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return (double(clock()) - t) / CLOCKS_PER_SEC / n * 1e9;
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}
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template <typename Tag, typename Storage>
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double compare_2d(unsigned n, int distrib) {
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auto r = random_array(n, distrib);
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auto best = std::numeric_limits<double>::max();
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auto h = make_s(Tag(), Storage(), reg(100, 0, 1), reg(100, 0, 1));
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auto t = clock();
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for (auto it = r.get(), end = r.get() + n; it != end;) {
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const auto x = *it++;
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const auto y = *it++;
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h(x, y);
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}
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return (double(clock()) - t) / CLOCKS_PER_SEC / n * 1e9;
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}
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template <typename Tag, typename Storage>
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double compare_3d(unsigned n, int distrib) {
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auto r = random_array(n, distrib);
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auto h = make_s(Tag(), Storage(), reg(100, 0, 1), reg(100, 0, 1), reg(100, 0, 1));
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auto t = clock();
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for (auto it = r.get(), end = r.get() + n; it != end;) {
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const auto x = *it++;
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const auto y = *it++;
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const auto z = *it++;
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h(x, y, z);
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}
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return (double(clock()) - t) / CLOCKS_PER_SEC / n * 1e9;
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}
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template <typename Tag, typename Storage>
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double compare_6d(unsigned n, int distrib) {
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auto r = random_array(n, distrib);
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auto h = make_s(Tag(), Storage(), reg(10, 0, 1), reg(10, 0, 1), reg(10, 0, 1),
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reg(10, 0, 1), reg(10, 0, 1), reg(10, 0, 1));
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auto t = clock();
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for (auto it = r.get(), end = r.get() + n; it != end;) {
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const auto x1 = *it++;
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const auto x2 = *it++;
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const auto x3 = *it++;
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const auto x4 = *it++;
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const auto x5 = *it++;
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const auto x6 = *it++;
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h(x1, x2, x3, x4, x5, x6);
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}
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return (double(clock()) - t) / CLOCKS_PER_SEC / n * 1e9;
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}
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int main() {
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const unsigned nfill = 6000000;
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using SStore = std::vector<int>;
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using DStore = unlimited_storage<>;
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printf("baseline %.1f\n", baseline(nfill));
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for (int itype = 0; itype < 2; ++itype) {
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const char* d = itype == 0 ? "uniform" : "normal ";
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printf("1D-boost:SS-%s %5.1f\n", d, compare_1d<static_tag, SStore>(nfill, itype));
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printf("1D-boost:SD-%s %5.1f\n", d, compare_1d<static_tag, DStore>(nfill, itype));
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printf("1D-boost:DS-%s %5.1f\n", d, compare_1d<dynamic_tag, SStore>(nfill, itype));
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printf("1D-boost:DD-%s %5.1f\n", d, compare_1d<dynamic_tag, DStore>(nfill, itype));
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printf("2D-boost:SS-%s %5.1f\n", d, compare_2d<static_tag, SStore>(nfill, itype));
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printf("2D-boost:SD-%s %5.1f\n", d, compare_2d<static_tag, DStore>(nfill, itype));
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printf("2D-boost:DS-%s %5.1f\n", d, compare_2d<dynamic_tag, SStore>(nfill, itype));
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printf("2D-boost:DD-%s %5.1f\n", d, compare_2d<dynamic_tag, DStore>(nfill, itype));
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printf("3D-boost:SS-%s %5.1f\n", d, compare_3d<static_tag, SStore>(nfill, itype));
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printf("3D-boost:SD-%s %5.1f\n", d, compare_3d<static_tag, DStore>(nfill, itype));
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printf("3D-boost:DS-%s %5.1f\n", d, compare_3d<dynamic_tag, SStore>(nfill, itype));
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printf("3D-boost:DD-%s %5.1f\n", d, compare_3d<dynamic_tag, DStore>(nfill, itype));
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printf("6D-boost:SS-%s %5.1f\n", d, compare_6d<static_tag, SStore>(nfill, itype));
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printf("6D-boost:SD-%s %5.1f\n", d, compare_6d<static_tag, DStore>(nfill, itype));
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printf("6D-boost:DS-%s %5.1f\n", d, compare_6d<dynamic_tag, SStore>(nfill, itype));
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printf("6D-boost:DD-%s %5.1f\n", d, compare_6d<dynamic_tag, DStore>(nfill, itype));
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}
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}
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