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//@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<ValueType> 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
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