276 lines
9.4 KiB
C++
276 lines
9.4 KiB
C++
/*
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//@HEADER
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// ************************************************************************
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//
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// Kokkos v. 3.0
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// Copyright (2020) National Technology & Engineering
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// Solutions of Sandia, LLC (NTESS).
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//
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// Under the terms of Contract DE-NA0003525 with NTESS,
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// the U.S. Government retains certain rights in this software.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// 1. Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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//
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// 3. Neither the name of the Corporation nor the names of the
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY NTESS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NTESS OR THE
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Questions? Contact Christian R. Trott (crtrott@sandia.gov)
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//
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// ************************************************************************
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//@HEADER
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*/
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#include <TestStdAlgorithmsCommon.hpp>
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#include <std_algorithms/Kokkos_BeginEnd.hpp>
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#include <std_algorithms/Kokkos_ModifyingSequenceOperations.hpp>
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#include <utility>
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#include <algorithm>
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namespace Test {
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namespace stdalgos {
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namespace Rotate {
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namespace KE = Kokkos::Experimental;
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template <class ValueType>
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struct UnifDist;
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template <>
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struct UnifDist<int> {
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using dist_type = std::uniform_int_distribution<int>;
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std::mt19937 m_gen;
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dist_type m_dist;
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UnifDist() : m_dist(-50, 50) { m_gen.seed(1034343); }
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int operator()() { return m_dist(m_gen); }
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};
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template <>
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struct UnifDist<double> {
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using dist_type = std::uniform_real_distribution<double>;
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std::mt19937 m_gen;
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dist_type m_dist;
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UnifDist() : m_dist(-90., 100.) { m_gen.seed(1034343); }
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double operator()() { return m_dist(m_gen); }
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};
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template <class ViewType>
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void fill_view(ViewType dest_view, const std::string& name) {
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using value_type = typename ViewType::value_type;
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using exe_space = typename ViewType::execution_space;
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const std::size_t ext = dest_view.extent(0);
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using aux_view_t = Kokkos::View<value_type*, exe_space>;
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aux_view_t aux_view("aux_view", ext);
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auto v_h = create_mirror_view(Kokkos::HostSpace(), aux_view);
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if (name == "empty") {
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// no op
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}
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else if (name == "one-element-a") {
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v_h(0) = static_cast<value_type>(1);
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}
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else if (name == "one-element-b") {
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v_h(0) = static_cast<value_type>(2);
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}
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else if (name == "two-elements-a") {
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v_h(0) = static_cast<value_type>(1);
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v_h(1) = static_cast<value_type>(2);
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}
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else if (name == "two-elements-b") {
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v_h(0) = static_cast<value_type>(2);
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v_h(1) = static_cast<value_type>(-1);
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}
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else if (name == "small-a") {
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v_h(0) = static_cast<value_type>(0);
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v_h(1) = static_cast<value_type>(1);
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v_h(2) = static_cast<value_type>(1);
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v_h(3) = static_cast<value_type>(-2);
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v_h(4) = static_cast<value_type>(3);
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v_h(5) = static_cast<value_type>(4);
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v_h(6) = static_cast<value_type>(-40);
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v_h(7) = static_cast<value_type>(4);
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v_h(8) = static_cast<value_type>(5);
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v_h(9) = static_cast<value_type>(62);
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v_h(10) = static_cast<value_type>(6);
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}
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else if (name == "small-b") {
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v_h(0) = static_cast<value_type>(1);
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v_h(1) = static_cast<value_type>(1);
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v_h(2) = static_cast<value_type>(-1);
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v_h(3) = static_cast<value_type>(2);
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v_h(4) = static_cast<value_type>(-3);
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v_h(5) = static_cast<value_type>(4);
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v_h(6) = static_cast<value_type>(4);
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v_h(7) = static_cast<value_type>(24);
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v_h(8) = static_cast<value_type>(5);
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v_h(9) = static_cast<value_type>(-46);
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v_h(10) = static_cast<value_type>(8);
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v_h(11) = static_cast<value_type>(9);
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v_h(12) = static_cast<value_type>(8);
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}
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else if (name == "medium" || name == "large") {
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UnifDist<value_type> randObj;
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for (std::size_t i = 0; i < ext; ++i) {
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v_h(i) = randObj();
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}
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}
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else {
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throw std::runtime_error("invalid choice");
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}
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Kokkos::deep_copy(aux_view, v_h);
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CopyFunctor<aux_view_t, ViewType> F1(aux_view, dest_view);
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Kokkos::parallel_for("copy", dest_view.extent(0), F1);
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}
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template <class ViewType, class ResultIt, class ViewHostType>
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void verify_data(ResultIt result_it, ViewType view, ViewHostType data_view_host,
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std::size_t rotation_point) {
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// run std::rotate
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auto n_it = KE::begin(data_view_host) + rotation_point;
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auto std_rit =
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std::rotate(KE::begin(data_view_host), n_it, KE::end(data_view_host));
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// make sure results match
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const auto my_diff = result_it - KE::begin(view);
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const auto std_diff = std_rit - KE::begin(data_view_host);
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EXPECT_TRUE(my_diff == std_diff);
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// check views match
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auto view_h = create_host_space_copy(view);
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const std::size_t ext = view_h.extent(0);
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for (std::size_t i = 0; i < ext; ++i) {
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EXPECT_TRUE(view_h(i) == data_view_host[i]);
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// std::cout << "i= " << i << " "
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// << "mine: " << view_h(i) << " "
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// << "std: " << data_view_host(i)
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// << '\n';
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}
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}
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std::string value_type_to_string(int) { return "int"; }
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std::string value_type_to_string(double) { return "double"; }
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template <class Tag, class ValueType>
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void print_scenario_details(const std::string& name,
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std::size_t rotation_point) {
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std::cout << "rotate: "
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<< " at " << rotation_point << ", " << name << ", "
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<< view_tag_to_string(Tag{}) << ", "
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<< value_type_to_string(ValueType()) << std::endl;
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}
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template <class Tag, class ValueType, class InfoType>
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void run_single_scenario(const InfoType& scenario_info,
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std::size_t rotation_point) {
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const auto name = std::get<0>(scenario_info);
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const std::size_t view_ext = std::get<1>(scenario_info);
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// print_scenario_details<Tag, ValueType>(name, rotation_point);
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{
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auto view = create_view<ValueType>(Tag{}, view_ext, "rotate_data_view");
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fill_view(view, name);
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// create host copy BEFORE rotate or view will be modified
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auto view_h = create_host_space_copy(view);
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auto n_it = KE::begin(view) + rotation_point;
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auto rit = KE::rotate(exespace(), KE::begin(view), n_it, KE::end(view));
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verify_data(rit, view, view_h, rotation_point);
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}
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{
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auto view = create_view<ValueType>(Tag{}, view_ext, "rotate_data_view");
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fill_view(view, name);
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// create host copy BEFORE rotate or view will be modified
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auto view_h = create_host_space_copy(view);
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auto n_it = KE::begin(view) + rotation_point;
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auto rit =
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KE::rotate("label", exespace(), KE::begin(view), n_it, KE::end(view));
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verify_data(rit, view, view_h, rotation_point);
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}
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{
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auto view = create_view<ValueType>(Tag{}, view_ext, "rotate_data_view");
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fill_view(view, name);
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// create host copy BEFORE rotate or view will be modified
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auto view_h = create_host_space_copy(view);
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auto rit = KE::rotate(exespace(), view, rotation_point);
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// verify_data(rit, view, view_h, rotation_point);
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}
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{
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auto view = create_view<ValueType>(Tag{}, view_ext, "rotate_data_view");
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fill_view(view, name);
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// create host copy BEFORE rotate or view will be modified
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auto view_h = create_host_space_copy(view);
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auto rit = KE::rotate("label", exespace(), view, rotation_point);
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verify_data(rit, view, view_h, rotation_point);
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}
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Kokkos::fence();
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}
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template <class Tag, class ValueType>
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void run_all_scenarios() {
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const std::map<std::string, std::size_t> scenarios = {
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{"empty", 0}, {"one-element-a", 1}, {"one-element-b", 1},
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{"two-elements-a", 2}, {"two-elements-b", 2}, {"small-a", 11},
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{"small-b", 13}, {"medium", 21103}, {"large", 101513}};
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std::vector<std::size_t> rotation_points = {0, 1, 2, 3, 8,
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56, 101, 1003, 101501};
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for (const auto& it : scenarios) {
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for (const auto& it2 : rotation_points) {
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// for each view scenario, we rotate at multiple points
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// but only if the view has an extent that is >= rotation point
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const auto view_ext = it.second;
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if (view_ext >= it2) {
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run_single_scenario<Tag, ValueType>(it, it2);
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}
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}
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}
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}
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TEST(std_algorithms_mod_seq_ops, rotate) {
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run_all_scenarios<DynamicTag, int>();
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run_all_scenarios<StridedThreeTag, int>();
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run_all_scenarios<DynamicTag, double>();
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run_all_scenarios<StridedThreeTag, double>();
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}
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} // namespace Rotate
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} // namespace stdalgos
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} // namespace Test
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