Update Kokkos library in LAMMPS to v4.2

lib/kokkos/algorithms/unit_tests/TestStdAlgorithmsTeamReplace.cpp

@@ -0,0 +1,135 @@
+//@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>
+#include <algorithm>
+
+namespace Test {
+namespace stdalgos {
+namespace TeamReplace {
+
+namespace KE = Kokkos::Experimental;
+
+template <class ValueType>
+struct UnifDist;
+
+template <>
+struct UnifDist<int> {
+  using dist_type = std::uniform_int_distribution<int>;
+  std::mt19937 m_gen;
+  dist_type m_dist;
+
+  UnifDist(int b, std::size_t seedIn) : m_dist(0, b) { m_gen.seed(seedIn); }
+
+  int operator()() { return m_dist(m_gen); }
+};
+
+template <class ViewType, class ValueType>
+struct TestFunctorA {
+  ViewType m_view;
+  ValueType m_targetValue;
+  ValueType m_newValue;
+  int m_apiPick;
+
+  TestFunctorA(const ViewType view, ValueType oldVal, ValueType newVal,
+               int apiPick)
+      : m_view(view),
+        m_targetValue(oldVal),
+        m_newValue(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());
+
+    if (m_apiPick == 0) {
+      KE::replace(member, KE::begin(myRowView), KE::end(myRowView),
+                  m_targetValue, m_newValue);
+    } else if (m_apiPick == 1) {
+      KE::replace(member, myRowView, m_targetValue, m_newValue);
+    }
+  }
+};
+
+template <class LayoutTag, class ValueType>
+void test_A(std::size_t numTeams, std::size_t numCols, int apiId) {
+  /* description:
+     Randomly fill a view with some elements equal to a target value that we
+     want to replace with a new value. Do the operation via a team parfor with
+     one row per team.
+   */
+
+  const auto targetVal = static_cast<ValueType>(531);
+  const auto newVal    = static_cast<ValueType>(123);
+
+  // -----------------------------------------------
+  // 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. Pick range so that some of the values are equal to target.
+  auto [dataView, dataViewBeforeOp_h] = create_random_view_and_host_clone(
+      LayoutTag{}, numTeams, numCols,
+      Kokkos::pair<ValueType, ValueType>{targetVal - 1, targetVal + 1},
+      "dataView");
+
+  // -----------------------------------------------
+  // launch kokkos kernel
+  // -----------------------------------------------
+  using space_t = Kokkos::DefaultExecutionSpace;
+  Kokkos::TeamPolicy<space_t> policy(numTeams, Kokkos::AUTO());
+  // use CTAD for functor
+  TestFunctorA fnc(dataView, targetVal, newVal, apiId);
+  Kokkos::parallel_for(policy, fnc);
+
+  // -----------------------------------------------
+  // conditions for test passing:
+  // - the target elements are replaced with the new value
+  // - all other elements are unchanged
+  // -----------------------------------------------
+  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) {
+      const auto correctVal = (dataViewBeforeOp_h(i, j) == targetVal)
+                                  ? newVal
+                                  : dataViewBeforeOp_h(i, j);
+      ASSERT_EQ(dataViewAfterOp_h(i, j), correctVal)
+          << "i, j = " << i << ", " << j;
+    }
+  }
+}
+
+template <class LayoutTag, class ValueType>
+void run_all_scenarios() {
+  for (int numTeams : teamSizesToTest) {
+    for (const auto& numCols : {0, 1, 2, 13, 101, 1444, 11113}) {
+      for (int apiId : {0, 1}) {
+        test_A<LayoutTag, ValueType>(numTeams, numCols, apiId);
+      }
+    }
+  }
+}
+
+TEST(std_algorithms_replace_team_test, test) {
+  run_all_scenarios<DynamicTag, double>();
+  run_all_scenarios<StridedTwoRowsTag, int>();
+  run_all_scenarios<StridedThreeRowsTag, unsigned>();
+}
+
+}  // namespace TeamReplace
+}  // namespace stdalgos
+}  // namespace Test