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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 <gridtools/sid/block.hpp>
#include <gtest/gtest.h>
#include <gridtools/common/hymap.hpp>
#include <gridtools/common/integral_constant.hpp>
#include <gridtools/common/tuple_util.hpp>
#include <gridtools/sid/composite.hpp>
#include <gridtools/sid/synthetic.hpp>
#include <gridtools/stencil/common/dim.hpp>
#include <gridtools/stencil/positional.hpp>
namespace gridtools {
namespace {
using namespace stencil;
struct some_dim;
using positional_t = sid::composite::keys<dim::i, dim::j, dim::k>::
values<positional<dim::i>, positional<dim::j>, positional<dim::k>>;
TEST(sid_block, smoke) {
const int domain_size_i = 12;
const int domain_size_j = 14;
const int domain_size_k = 4;
constexpr int block_size_i = 3;
const int block_size_j = 7;
auto blocks = hymap::keys<dim::i, dim::j, some_dim>::make_values(
integral_constant<int_t, block_size_i>{}, block_size_j, 5);
positional_t s;
auto blocked_s = sid::block(s, blocks);
static_assert(is_sid<decltype(blocked_s)>());
auto strides = sid::get_strides(blocked_s);
for (int ib = 0; ib < domain_size_i; ib += block_size_i) {
for (int jb = 0; jb < domain_size_j; jb += block_size_j) {
auto ptr = sid::get_origin(blocked_s)();
sid::shift(ptr, sid::get_stride<sid::blocked_dim<dim::i>>(strides), ib / block_size_i);
sid::shift(ptr, sid::get_stride<sid::blocked_dim<dim::j>>(strides), jb / block_size_j);
for (int i = ib; i < ib + block_size_i; ++i) {
for (int j = jb; j < jb + block_size_j; ++j) {
for (int k = 0; k < domain_size_k; ++k) {
EXPECT_EQ(*at_key<dim::i>(ptr), i);
EXPECT_EQ(*at_key<dim::j>(ptr), j);
EXPECT_EQ(*at_key<dim::k>(ptr), k);
sid::shift(ptr, sid::get_stride<dim::k>(strides), 1);
}
sid::shift(ptr, sid::get_stride<dim::k>(strides), -domain_size_k);
sid::shift(ptr, sid::get_stride<dim::j>(strides), 1);
}
sid::shift(ptr, sid::get_stride<dim::j>(strides), -block_size_j);
sid::shift(ptr, sid::get_stride<dim::i>(strides), 1);
}
}
}
}
TEST(sid_block, multilevel) {
positional_t s;
const int domain_size = 20;
const int block_size_1 = 5;
const int block_size_2 = 2;
auto blocked_s = sid::block(s, hymap::keys<dim::i>::make_values(block_size_1));
static_assert(is_sid<decltype(blocked_s)>());
auto blocked_blocked_s =
sid::block(blocked_s, hymap::keys<sid::blocked_dim<dim::i>>::make_values(block_size_2));
static_assert(is_sid<decltype(blocked_blocked_s)>());
auto ptr = sid::get_origin(blocked_blocked_s)();
auto strides = sid::get_strides(blocked_blocked_s);
for (int ib2 = 0; ib2 < domain_size; ib2 += block_size_1 * block_size_2) {
for (int ib = ib2; ib < ib2 + block_size_1 * block_size_2; ib += block_size_1) {
for (int i = ib; i < ib + block_size_1; ++i) {
EXPECT_EQ(*at_key<dim::i>(ptr), i);
EXPECT_EQ(*at_key<dim::j>(ptr), 0);
EXPECT_EQ(*at_key<dim::k>(ptr), 0);
sid::shift(ptr, sid::get_stride<dim::i>(strides), 1);
}
sid::shift(ptr, sid::get_stride<dim::i>(strides), -block_size_1);
sid::shift(ptr, sid::get_stride<sid::blocked_dim<dim::i>>(strides), 1);
}
sid::shift(ptr, sid::get_stride<sid::blocked_dim<dim::i>>(strides), -block_size_2);
sid::shift(ptr, sid::get_stride<sid::blocked_dim<sid::blocked_dim<dim::i>>>(strides), 1);
}
}
TEST(sid_block, do_nothing) {
positional_t s;
auto same_s = sid::block(s, hymap::keys<some_dim>::make_values(42));
static_assert(std::is_same_v<decltype(s), decltype(same_s)>);
}
TEST(sid_block, reference_wrapper) {
positional_t s;
const int domain_size = 20;
const int block_size = 5;
auto blocked_s = sid::block(std::ref(s), hymap::keys<dim::i>::make_values(block_size));
static_assert(is_sid<decltype(blocked_s)>());
auto ptr = sid::get_origin(blocked_s)();
auto strides = sid::get_strides(blocked_s);
for (int ib = 0; ib < domain_size; ib += block_size) {
for (int i = ib; i < ib + block_size; ++i) {
EXPECT_EQ(*at_key<dim::i>(ptr), i);
EXPECT_EQ(*at_key<dim::j>(ptr), 0);
EXPECT_EQ(*at_key<dim::k>(ptr), 0);
sid::shift(ptr, sid::get_stride<dim::i>(strides), 1);
}
sid::shift(ptr, sid::get_stride<dim::i>(strides), -block_size);
sid::shift(ptr, sid::get_stride<sid::blocked_dim<dim::i>>(strides), 1);
}
}
TEST(sid_block, integral_strides_types) {
using namespace literals;
using dims_t = hymap::keys<dim::i, dim::j, dim::k, some_dim>;
auto strides = dims_t::make_values(1, 2, 4_c, 8_c);
auto blocks = dims_t::make_values(2, 2_c, 2, 2_c);
auto s = sid::synthetic()
.set<sid::property::origin>(sid::simple_ptr_holder<int *>{nullptr})
.set<sid::property::strides>(strides)
.set<sid::property::strides_kind, void>();
static_assert(is_sid<decltype(s)>());
auto blocked_s = sid::block(s, blocks);
static_assert(is_sid<decltype(blocked_s)>());
auto blocked_strides = sid::get_strides(blocked_s);
EXPECT_EQ(sid::get_stride<sid::blocked_dim<dim::i>>(blocked_strides), 2);
EXPECT_EQ(sid::get_stride<sid::blocked_dim<dim::j>>(blocked_strides), 4);
EXPECT_EQ(sid::get_stride<sid::blocked_dim<dim::k>>(blocked_strides), 8);
EXPECT_EQ(sid::get_stride<sid::blocked_dim<some_dim>>(blocked_strides), 16_c);
}
} // namespace
} // namespace gridtools
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