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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
#ifndef KOKKOS_TEST_SIMD_WHERE_EXPRESSIONS_HPP
#define KOKKOS_TEST_SIMD_WHERE_EXPRESSIONS_HPP
#include <Kokkos_SIMD.hpp>
#include <SIMDTesting_Utilities.hpp>
template <typename Abi, typename DataType>
inline void host_check_where_expr_scatter_to() {
if constexpr (is_simd_avail_v<DataType, Abi>) {
using simd_type = Kokkos::Experimental::basic_simd<DataType, Abi>;
using index_type = Kokkos::Experimental::basic_simd<std::int32_t, Abi>;
using mask_type = typename simd_type::mask_type;
constexpr std::size_t nlanes = simd_type::size();
DataType init[] = {11, 13, 17, 19, 23, 29, 31, 37,
53, 71, 79, 83, 89, 93, 97, 103};
simd_type src;
src.copy_from(init, Kokkos::Experimental::simd_flag_default);
for (std::size_t idx = 0; idx < nlanes; ++idx) {
if constexpr (std::is_same_v<Abi,
Kokkos::Experimental::simd_abi::scalar>) {
mask_type mask(KOKKOS_LAMBDA(std::size_t i) { return i != idx; });
DataType dst[nlanes] = {0};
for (std::size_t i = 0; i < nlanes; ++i) {
dst[i] = (2 + (i * 2));
}
index_type index(KOKKOS_LAMBDA(std::size_t i) { return i; });
simd_type expected_result(KOKKOS_LAMBDA(std::size_t i) {
return (mask[i]) ? src[index[i]] : dst[i];
});
where(mask, src).scatter_to(dst, index);
simd_type dst_simd;
dst_simd.copy_from(dst, Kokkos::Experimental::simd_flag_default);
host_check_equality(expected_result, dst_simd, nlanes);
} else {
mask_type mask([=](std::size_t i) { return i != idx; });
DataType dst[nlanes] = {0};
for (std::size_t i = 0; i < nlanes; ++i) {
dst[i] = (2 + (i * 2));
}
index_type index([=](std::size_t i) { return i; });
simd_type expected_result(
[=](std::size_t i) { return (mask[i]) ? src[index[i]] : dst[i]; });
where(mask, src).scatter_to(dst, index);
simd_type dst_simd;
dst_simd.copy_from(dst, Kokkos::Experimental::simd_flag_default);
host_check_equality(expected_result, dst_simd, nlanes);
}
}
}
}
template <typename Abi, typename DataType>
inline void host_check_where_expr_gather_from() {
if constexpr (is_simd_avail_v<DataType, Abi>) {
using simd_type = Kokkos::Experimental::basic_simd<DataType, Abi>;
using index_type = Kokkos::Experimental::basic_simd<std::int32_t, Abi>;
using mask_type = typename simd_type::mask_type;
std::size_t nlanes = simd_type::size();
DataType src[] = {11, 13, 17, 19, 23, 29, 31, 37,
53, 71, 79, 83, 89, 93, 97, 103};
for (std::size_t idx = 0; idx < nlanes; ++idx) {
if constexpr (std::is_same_v<Abi,
Kokkos::Experimental::simd_abi::scalar>) {
mask_type mask(KOKKOS_LAMBDA(std::size_t i) { return i != idx; });
simd_type dst(KOKKOS_LAMBDA(std::size_t i) { return (2 + (i * 2)); });
index_type index(KOKKOS_LAMBDA(std::size_t i) { return i; });
simd_type expected_result(KOKKOS_LAMBDA(std::size_t i) {
return (mask[i]) ? src[index[i]] : dst[i];
});
where(mask, dst).gather_from(src, index);
host_check_equality(expected_result, dst, nlanes);
} else {
mask_type mask([=](std::size_t i) { return i != idx; });
simd_type dst([=](std::size_t i) { return (2 + (i * 2)); });
index_type index([=](std::size_t i) { return i; });
simd_type expected_result(
[=](std::size_t i) { return (mask[i]) ? src[index[i]] : dst[i]; });
where(mask, dst).gather_from(src, index);
host_check_equality(expected_result, dst, nlanes);
}
}
}
}
template <class Abi, typename DataType>
inline void host_check_where_expr() {
host_check_where_expr_scatter_to<Abi, DataType>();
host_check_where_expr_gather_from<Abi, DataType>();
}
template <typename Abi, typename... DataTypes>
inline void host_check_where_expr_all_types(
Kokkos::Experimental::Impl::data_types<DataTypes...>) {
(host_check_where_expr<Abi, DataTypes>(), ...);
}
template <typename... Abis>
inline void host_check_where_expr_all_abis(
Kokkos::Experimental::Impl::abi_set<Abis...>) {
using DataTypes = Kokkos::Experimental::Impl::data_type_set;
(host_check_where_expr_all_types<Abis>(DataTypes()), ...);
}
template <typename Abi, typename DataType>
KOKKOS_INLINE_FUNCTION void device_check_where_expr_scatter_to() {
if constexpr (is_type_v<Kokkos::Experimental::basic_simd<DataType, Abi>>) {
using simd_type = Kokkos::Experimental::basic_simd<DataType, Abi>;
using index_type = Kokkos::Experimental::basic_simd<std::int32_t, Abi>;
using mask_type = typename simd_type::mask_type;
constexpr std::size_t nlanes = simd_type::size();
DataType init[] = {11, 13, 17, 19, 23, 29, 31, 37,
53, 71, 79, 83, 89, 93, 97, 103};
simd_type src;
src.copy_from(init, Kokkos::Experimental::simd_flag_default);
for (std::size_t idx = 0; idx < nlanes; ++idx) {
mask_type mask(KOKKOS_LAMBDA(std::size_t i) { return i != idx; });
DataType dst[nlanes] = {0};
for (std::size_t i = 0; i < nlanes; ++i) {
dst[i] = (2 + (i * 2));
}
index_type index([=](std::size_t i) { return i; });
simd_type expected_result(KOKKOS_LAMBDA(std::size_t i) {
return (mask[i]) ? src[index[i]] : dst[i];
});
where(mask, src).scatter_to(dst, index);
simd_type dst_simd;
dst_simd.copy_from(dst, Kokkos::Experimental::simd_flag_default);
device_check_equality(expected_result, dst_simd, nlanes);
}
}
}
template <typename Abi, typename DataType>
KOKKOS_INLINE_FUNCTION void device_check_where_expr_gather_from() {
using simd_type = Kokkos::Experimental::basic_simd<DataType, Abi>;
using index_type = Kokkos::Experimental::basic_simd<std::int32_t, Abi>;
using mask_type = typename simd_type::mask_type;
std::size_t nlanes = simd_type::size();
DataType src[] = {11, 13, 17, 19, 23, 29, 31, 37,
53, 71, 79, 83, 89, 93, 97, 103};
for (std::size_t idx = 0; idx < nlanes; ++idx) {
mask_type mask(KOKKOS_LAMBDA(std::size_t i) { return i != idx; });
simd_type dst([=](std::size_t i) { return (2 + (i * 2)); });
index_type index([=](std::size_t i) { return i; });
simd_type expected_result(KOKKOS_LAMBDA(std::size_t i) {
return (mask[i]) ? src[index[i]] : dst[i];
});
where(mask, dst).gather_from(src, index);
device_check_equality(expected_result, dst, nlanes);
}
}
template <class Abi, typename DataType>
KOKKOS_INLINE_FUNCTION void device_check_where_expr() {
device_check_where_expr_scatter_to<Abi, DataType>();
device_check_where_expr_gather_from<Abi, DataType>();
}
template <typename Abi, typename... DataTypes>
KOKKOS_INLINE_FUNCTION void device_check_where_expr_all_types(
Kokkos::Experimental::Impl::data_types<DataTypes...>) {
(device_check_where_expr<Abi, DataTypes>(), ...);
}
template <typename... Abis>
KOKKOS_INLINE_FUNCTION void device_check_where_expr_all_abis(
Kokkos::Experimental::Impl::abi_set<Abis...>) {
using DataTypes = Kokkos::Experimental::Impl::data_type_set;
(device_check_where_expr_all_types<Abis>(DataTypes()), ...);
}
class simd_device_where_expr_functor {
public:
KOKKOS_INLINE_FUNCTION void operator()(int) const {
device_check_where_expr_all_abis(
Kokkos::Experimental::Impl::device_abi_set());
}
};
TEST(simd, host_where_expressions) {
host_check_where_expr_all_abis(Kokkos::Experimental::Impl::host_abi_set());
}
TEST(simd, device_where_expressions) {
Kokkos::parallel_for(1, simd_device_where_expr_functor());
}
#endif
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