Update Kokkos library in LAMMPS to v4.2

lib/kokkos/algorithms/unit_tests/TestStdAlgorithmsTeamReverse.cpp

@@ -0,0 +1,105 @@
+//@HEADER
+// ************************************************************************
+//
+//                        Kokkos v. 4.0
+//       Copyright (2022) National Technology & Engineering
+//               Solutions of Sandia, LLC (NTESS).
+//
+// Under the terms of Contract DE-NA0003525 with NTESS,
+// the U.S. Government retains certain rights in this software.
+//
+// Part of Kokkos, under the Apache License v2.0 with LLVM Exceptions.
+// See https://kokkos.org/LICENSE for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//@HEADER
+
+#include <TestStdAlgorithmsCommon.hpp>
+
+namespace Test {
+namespace stdalgos {
+namespace TeamReverse {
+
+namespace KE = Kokkos::Experimental;
+
+template <class ViewType>
+struct TestFunctorA {
+  ViewType m_view;
+  int m_api_pick;
+
+  TestFunctorA(const ViewType view, int apiPick)
+      : m_view(view), m_api_pick(apiPick) {}
+
+  template <class MemberType>
+  KOKKOS_INLINE_FUNCTION void operator()(const MemberType& member) const {
+    const auto myRowIndex = member.league_rank();
+    auto myRowView        = Kokkos::subview(m_view, myRowIndex, Kokkos::ALL());
+
+    if (m_api_pick == 0) {
+      KE::reverse(member, KE::begin(myRowView), KE::end(myRowView));
+    } else if (m_api_pick == 1) {
+      KE::reverse(member, myRowView);
+    }
+  }
+};
+
+template <class LayoutTag, class ValueType>
+void test_A(std::size_t numTeams, std::size_t numCols, int apiId) {
+  /* description:
+     create a rank-2 view, randomly fill, and do a team-level
+     KE::reverse for each row where each team is
+     responsible for a single row
+   */
+
+  // -----------------------------------------------
+  // prepare data
+  // -----------------------------------------------
+  // create a view in the memory space associated with default exespace
+  // with as many rows as the number of teams and fill it with random
+  // values from an arbitrary range
+  auto [dataView, cloneOfDataViewBeforeOp_h] =
+      create_random_view_and_host_clone(
+          LayoutTag{}, numTeams, numCols,
+          Kokkos::pair<ValueType, ValueType>{11, 523}, "dataView");
+
+  // -----------------------------------------------
+  // launch kokkos kernel
+  // -----------------------------------------------
+  using space_t = Kokkos::DefaultExecutionSpace;
+  Kokkos::TeamPolicy<space_t> policy(numTeams, Kokkos::AUTO());
+  // use CTAD for functor
+  TestFunctorA fnc(dataView, apiId);
+  Kokkos::parallel_for(policy, fnc);
+
+  // -----------------------------------------------
+  // check
+  // -----------------------------------------------
+  auto dataViewAfterOp_h = create_host_space_copy(dataView);
+  for (std::size_t i = 0; i < dataViewAfterOp_h.extent(0); ++i) {
+    for (std::size_t j = 0; j < dataViewAfterOp_h.extent(1); ++j) {
+      EXPECT_TRUE(dataViewAfterOp_h(i, j) ==
+                  cloneOfDataViewBeforeOp_h(i, numCols - j - 1));
+    }
+  }
+}
+
+template <class LayoutTag, class ValueType>
+void run_all_scenarios() {
+  for (int numTeams : teamSizesToTest) {
+    for (const auto& numCols : {0, 1, 2, 13, 101, 1444, 8153}) {
+      for (int apiId : {0, 1}) {
+        test_A<LayoutTag, ValueType>(numTeams, numCols, apiId);
+      }
+    }
+  }
+}
+
+TEST(std_algorithms_reverse_team_test, test) {
+  run_all_scenarios<DynamicTag, double>();
+  run_all_scenarios<StridedTwoRowsTag, int>();
+  run_all_scenarios<StridedThreeRowsTag, unsigned>();
+}
+
+}  // namespace TeamReverse
+}  // namespace stdalgos
+}  // namespace Test