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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// SPDX-FileCopyrightText: Copyright Contributors to the Kokkos project
#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
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