Update Kokkos library in LAMMPS to v4.2

lib/kokkos/algorithms/unit_tests/TestStdAlgorithmsTeamReplaceIf.cpp

@@ -0,0 +1,138 @@
+//@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 TeamReplaceIf {
+
+namespace KE = Kokkos::Experimental;
+
+template <class ValueType>
+struct GreaterThanValueFunctor {
+  ValueType m_val;
+
+  KOKKOS_INLINE_FUNCTION
+  GreaterThanValueFunctor(ValueType val) : m_val(val) {}
+
+  KOKKOS_INLINE_FUNCTION
+  bool operator()(ValueType val) const { return (val > m_val); }
+};
+
+template <class ViewType, class ValueType>
+struct TestFunctorA {
+  ViewType m_view;
+  ValueType m_threshold;
+  ValueType m_newVal;
+  int m_apiPick;
+
+  TestFunctorA(const ViewType view, ValueType threshold, ValueType newVal,
+               int apiPick)
+      : m_view(view),
+        m_threshold(threshold),
+        m_newVal(newVal),
+        m_apiPick(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());
+
+    GreaterThanValueFunctor predicate(m_threshold);
+    if (m_apiPick == 0) {
+      KE::replace_if(member, KE::begin(myRowView), KE::end(myRowView),
+                     predicate, m_newVal);
+    } else if (m_apiPick == 1) {
+      KE::replace_if(member, myRowView, predicate, m_newVal);
+    }
+  }
+};
+
+template <class LayoutTag, class ValueType>
+void test_A(std::size_t numTeams, std::size_t numCols, int apiId) {
+  /* description:
+     use a rank-2 view randomly filled with values,
+     and run a team-level replace_if where the values strictly greater
+     than a threshold are replaced with a new value.
+   */
+  const auto threshold = static_cast<ValueType>(151);
+  const auto newVal    = static_cast<ValueType>(1);
+
+  // -----------------------------------------------
+  // 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>{5, 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, threshold, newVal, apiId);
+  Kokkos::parallel_for(policy, fnc);
+
+  // -----------------------------------------------
+  // run cpp-std kernel
+  // -----------------------------------------------
+  Kokkos::View<ValueType**, Kokkos::HostSpace> stdDataView("stdDataView",
+                                                           numTeams, numCols);
+  // ensure that we use the same data to run the std algo on
+  for (std::size_t i = 0; i < dataView.extent(0); ++i) {
+    for (std::size_t j = 0; j < dataView.extent(1); ++j) {
+      stdDataView(i, j) = cloneOfDataViewBeforeOp_h(i, j);
+    }
+  }
+  GreaterThanValueFunctor predicate(threshold);
+  for (std::size_t i = 0; i < dataView.extent(0); ++i) {
+    auto thisRow = Kokkos::subview(stdDataView, i, Kokkos::ALL());
+    std::replace_if(KE::begin(thisRow), KE::end(thisRow), predicate, newVal);
+  }
+
+  // -----------------------------------------------
+  // check
+  // -----------------------------------------------
+  auto dataViewAfterOp_h = create_host_space_copy(dataView);
+  expect_equal_host_views(stdDataView, dataViewAfterOp_h);
+}
+
+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_replace_if_team_test, test) {
+  run_all_scenarios<DynamicTag, double>();
+  run_all_scenarios<StridedTwoRowsTag, int>();
+  run_all_scenarios<StridedThreeRowsTag, unsigned>();
+}
+
+}  // namespace TeamReplaceIf
+}  // namespace stdalgos
+}  // namespace Test