120 lines
3.9 KiB
C++
120 lines
3.9 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 <gtest/gtest.h>
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#include <Kokkos_Core.hpp>
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#include <stdexcept>
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#include <sstream>
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#include <iostream>
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namespace Test {
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template <class Space>
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struct NestedView {
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Kokkos::View<int *, Space> member;
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public:
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KOKKOS_INLINE_FUNCTION
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NestedView() : member() {}
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KOKKOS_INLINE_FUNCTION
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NestedView &operator=(const Kokkos::View<int *, Space> &lhs) {
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member = lhs;
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if (member.extent(0)) Kokkos::atomic_add(&member(0), 1);
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return *this;
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}
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KOKKOS_INLINE_FUNCTION
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~NestedView() {
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if (member.extent(0)) {
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Kokkos::atomic_add(&member(0), -1);
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}
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}
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};
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template <class Space>
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struct NestedViewFunctor {
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Kokkos::View<NestedView<Space> *, Space> nested;
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Kokkos::View<int *, Space> array;
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NestedViewFunctor(const Kokkos::View<NestedView<Space> *, Space> &arg_nested,
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const Kokkos::View<int *, Space> &arg_array)
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: nested(arg_nested), array(arg_array) {}
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KOKKOS_INLINE_FUNCTION
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void operator()(int i) const { nested[i] = array; }
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};
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template <class Space>
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void view_nested_view() {
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Kokkos::View<int *, Space> tracking("tracking", 1);
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typename Kokkos::View<int *, Space>::HostMirror host_tracking =
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Kokkos::create_mirror(tracking);
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{
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Kokkos::View<NestedView<Space> *, Space> a("a_nested_view", 2);
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Kokkos::parallel_for(Kokkos::RangePolicy<Space>(0, 2),
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NestedViewFunctor<Space>(a, tracking));
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Kokkos::deep_copy(host_tracking, tracking);
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ASSERT_EQ(2, host_tracking(0));
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Kokkos::View<NestedView<Space> *, Space> b("b_nested_view", 2);
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Kokkos::parallel_for(Kokkos::RangePolicy<Space>(0, 2),
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NestedViewFunctor<Space>(b, tracking));
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Kokkos::deep_copy(host_tracking, tracking);
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ASSERT_EQ(4, host_tracking(0));
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}
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Kokkos::deep_copy(host_tracking, tracking);
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ASSERT_EQ(0, host_tracking(0));
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}
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TEST(TEST_CATEGORY, view_nested_view) { view_nested_view<TEST_EXECSPACE>(); }
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} // namespace Test
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