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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_and_flush,
(vertical_test_environment<0, axis_t>),
stencil_backend_t,
(double, inlined_params<6, 6, 2, 6, 2>));
struct shift_acc_forward_fill_and_flush {
using in = inout_accessor<0, extent<0, 0, 0, 0, -1, 0>>;
using param_list = make_param_list<in>;
template <class Eval>
GT_FUNCTION static void apply(Eval &&eval, kfull::modify<1, 0>) {
eval(in()) = eval(in()) + eval(in(0, 0, -1));
}
template <class Eval>
GT_FUNCTION static void apply(Eval &&eval, kfull::first_level) {
eval(in()) = eval(in());
}
};
GT_ENVIRONMENT_TYPED_TEST(test_kcache_fill_and_flush, forward) {
auto field = TypeParam::make_storage(in);
auto spec = [](auto in) {
return execute_forward()
.k_cached(cache_io_policy::fill(), cache_io_policy::flush(), in)
.stage(shift_acc_forward_fill_and_flush(), in);
};
run(spec, stencil_backend_t(), TypeParam::make_grid(), field);
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);
for (int k = 1; k < TypeParam::k_size(); ++k)
refv(i, j, k) = in(i, j, k) + refv(i, j, k - 1);
}
TypeParam::verify(ref, field);
}
struct shift_acc_backward_fill_and_flush {
using in = inout_accessor<0, extent<0, 0, 0, 0, 0, 1>>;
using param_list = make_param_list<in>;
template <class Eval>
GT_FUNCTION static void apply(Eval &&eval, kfull::modify<0, -1>) {
eval(in()) = eval(in()) + eval(in(0, 0, 1));
}
template <class Eval>
GT_FUNCTION static void apply(Eval &&eval, kfull::last_level) {
eval(in()) = eval(in());
}
};
GT_ENVIRONMENT_TYPED_TEST(test_kcache_fill_and_flush, backward) {
auto field = TypeParam::make_storage(in);
auto spec = [](auto in) {
return execute_backward()
.k_cached(cache_io_policy::fill(), cache_io_policy::flush(), in)
.stage(shift_acc_backward_fill_and_flush(), in);
};
run(spec, stencil_backend_t(), TypeParam::make_grid(), field);
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);
for (int k = TypeParam::k_size() - 2; k >= 0; --k)
refv(i, j, k) = refv(i, j, k + 1) + in(i, j, k);
}
TypeParam::verify(ref, field);
}
struct copy_fill {
using in = inout_accessor<0>;
using param_list = make_param_list<in>;
template <class Eval>
GT_FUNCTION static void apply(Eval &&eval, kfull) {
eval(in()) = eval(in());
}
};
GT_ENVIRONMENT_TYPED_TEST(test_kcache_fill_and_flush, copy_forward) {
auto field = TypeParam::make_storage(in);
auto spec = [](auto in) {
return execute_forward()
.k_cached(cache_io_policy::fill(), cache_io_policy::flush(), in)
.stage(copy_fill(), in);
};
run(spec, stencil_backend_t(), TypeParam::make_grid(), field);
TypeParam::verify(in, field);
}
struct scale_fill {
using in = inout_accessor<0>;
using param_list = make_param_list<in>;
template <class Eval>
GT_FUNCTION static void apply(Eval &&eval, kfull) {
eval(in()) = 2 * eval(in());
}
};
GT_ENVIRONMENT_TYPED_TEST(test_kcache_fill_and_flush, scale_forward) {
auto field = TypeParam::make_storage(in);
auto spec = [](auto in) {
return execute_forward()
.k_cached(cache_io_policy::fill(), cache_io_policy::flush(), in)
.stage(scale_fill(), in);
};
run(spec, stencil_backend_t(), TypeParam::make_grid(), field);
TypeParam::verify([](int i, int j, int k) { return 2 * in(i, j, k); }, field);
}
} // namespace
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