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/*
* GridTools
*
* Copyright (c) 2014-2023, ETH Zurich
* All rights reserved.
*
* Please, refer to the LICENSE file in the root directory.
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <gtest/gtest.h>
#include <gridtools/stencil/cartesian.hpp>
#include <stencil_select.hpp>
#include <test_environment.hpp>
namespace {
using namespace gridtools;
using namespace stencil;
using namespace cartesian;
using axis_t = axis<3, axis_config::offset_limit<3>>;
using kfull = axis_t::full_interval;
double in(int i, int j, int k) { return i + j + k + 1; }
GT_ENVIRONMENT_TEST_SUITE(test_kcache_fill,
(vertical_test_environment<0, axis_t>),
stencil_backend_t,
(double, inlined_params<6, 6, 2, 6, 2>));
struct shift_acc_forward_fill {
using in = in_accessor<0, extent<0, 0, 0, 0, -1, 1>>;
using out = inout_accessor<1>;
using param_list = make_param_list<in, out>;
template <class Eval>
GT_FUNCTION static void apply(Eval &&eval, kfull::first_level) {
eval(out()) = eval(in()) + eval(in(0, 0, 1));
}
template <class Eval>
GT_FUNCTION static void apply(Eval &&eval, kfull::modify<1, -1>) {
eval(out()) = eval(in(0, 0, -1)) + eval(in()) + eval(in(0, 0, 1));
}
template <class Eval>
GT_FUNCTION static void apply(Eval &&eval, kfull::last_level) {
eval(out()) = eval(in(0, 0, -1)) + eval(in());
}
};
GT_ENVIRONMENT_TYPED_TEST(test_kcache_fill, forward) {
auto out = TypeParam::make_storage();
auto spec = [](auto in, auto out) {
return execute_forward().k_cached(cache_io_policy::fill(), in).stage(shift_acc_forward_fill(), in, out);
};
run(spec, stencil_backend_t(), TypeParam::make_grid(), TypeParam::make_storage(in), out);
auto ref = TypeParam::make_storage();
auto refv = ref->host_view();
for (int i = 0; i < TypeParam::d(0); ++i) {
for (int j = 0; j < TypeParam::d(1); ++j) {
refv(i, j, 0) = in(i, j, 0) + in(i, j, 1);
for (int k = 1; k < TypeParam::k_size() - 1; ++k)
refv(i, j, k) = in(i, j, k - 1) + in(i, j, k) + in(i, j, k + 1);
refv(i, j, TypeParam::k_size() - 1) =
in(i, j, TypeParam::k_size() - 1) + in(i, j, TypeParam::k_size() - 2);
}
}
TypeParam::verify(ref, out);
}
struct shift_acc_backward_fill {
using in = in_accessor<0, extent<0, 0, 0, 0, -1, 1>>;
using out = inout_accessor<1>;
using param_list = make_param_list<in, out>;
template <class Eval>
GT_FUNCTION static void apply(Eval &&eval, kfull::last_level) {
eval(out()) = eval(in()) + eval(in(0, 0, -1));
}
template <class Eval>
GT_FUNCTION static void apply(Eval &&eval, kfull::modify<1, -1>) {
eval(out()) = eval(in(0, 0, 1)) + eval(in()) + eval(in(0, 0, -1));
}
template <class Eval>
GT_FUNCTION static void apply(Eval &&eval, kfull::first_level) {
eval(out()) = eval(in()) + eval(in(0, 0, 1));
}
};
GT_ENVIRONMENT_TYPED_TEST(test_kcache_fill, backward) {
auto out = TypeParam::make_storage();
auto spec = [](auto in, auto out) {
return execute_backward().k_cached(cache_io_policy::fill(), in).stage(shift_acc_backward_fill(), in, out);
};
run(spec, stencil_backend_t(), TypeParam::make_grid(), TypeParam::make_storage(in), out);
auto ref = TypeParam::make_storage();
auto refv = ref->host_view();
for (int i = 0; i < TypeParam::d(0); ++i) {
for (int j = 0; j < TypeParam::d(1); ++j) {
refv(i, j, TypeParam::k_size() - 1) =
in(i, j, TypeParam::k_size() - 1) + in(i, j, TypeParam::k_size() - 2);
for (int_t k = TypeParam::k_size() - 2; k >= 1; --k)
refv(i, j, k) = in(i, j, k + 1) + in(i, j, k) + in(i, j, k - 1);
refv(i, j, 0) = in(i, j, 1) + in(i, j, 0);
}
}
TypeParam::verify(ref, out);
}
struct copy_fill {
using in = in_accessor<0>;
using out = inout_accessor<1>;
using param_list = make_param_list<in, out>;
template <class Eval>
GT_FUNCTION static void apply(Eval &&eval, kfull) {
eval(out()) = eval(in());
}
};
GT_ENVIRONMENT_TYPED_TEST(test_kcache_fill, fill_copy_forward) {
auto out = TypeParam::make_storage();
auto spec = [](auto in, auto out) {
return execute_forward().k_cached(cache_io_policy::fill(), in).stage(copy_fill(), in, out);
};
run(spec, stencil_backend_t(), TypeParam::make_grid(), TypeParam::make_storage(in), out);
TypeParam::verify(in, out);
}
} // namespace
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