mirror of https://github.com/google/gemma.cpp.git
120 lines
4.2 KiB
C++
120 lines
4.2 KiB
C++
// Copyright 2024 Google LLC
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// SPDX-License-Identifier: Apache-2.0
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Include guard for headers.
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#ifndef THIRD_PARTY_GEMMA_CPP_COMPRESSION_TEST_UTIL_INL_H_
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#define THIRD_PARTY_GEMMA_CPP_COMPRESSION_TEST_UTIL_INL_H_
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// IWYU pragma: begin_exports
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#include "compression/distortion.h"
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#include "util/mat.h"
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// IWYU pragma: end_exports
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#include "compression/compress.h"
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#include "hwy/contrib/thread_pool/thread_pool.h"
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#endif // THIRD_PARTY_GEMMA_CPP_COMPRESSION_TEST_UTIL_INL_H_
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// Include guard for (potentially) SIMD code.
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#if defined(THIRD_PARTY_GEMMA_CPP_COMPRESS_TEST_UTIL_TOGGLE) == \
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defined(HWY_TARGET_TOGGLE) // NOLINT
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#ifdef THIRD_PARTY_GEMMA_CPP_COMPRESS_TEST_UTIL_TOGGLE
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#undef THIRD_PARTY_GEMMA_CPP_COMPRESS_TEST_UTIL_TOGGLE
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#else
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#define THIRD_PARTY_GEMMA_CPP_COMPRESS_TEST_UTIL_TOGGLE
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#endif
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#include "hwy/highway.h"
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// After highway.h
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#include "compression/compress-inl.h"
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#include "hwy/tests/test_util-inl.h" // IWYU pragma: export
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HWY_BEFORE_NAMESPACE();
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namespace gcpp {
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namespace HWY_NAMESPACE {
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namespace hn = hwy::HWY_NAMESPACE;
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// `Packed` is the type passed to `TestT`.
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template <typename Packed, template <class> class TestT>
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void ForeachRawType() {
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const hn::ForGEVectors<128, TestT<Packed>> test;
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// The argument selects the type to decode to: BF16 or float.
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test(BF16());
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test(float());
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// Do not include double because it is not supported as an input type - we
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// would also have to implement double -> Packed Compress().
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}
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template <template <class> class TestT>
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void ForeachPackedAndRawType() {
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ForeachRawType<BF16, TestT>();
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ForeachRawType<float, TestT>();
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ForeachRawType<SfpStream, TestT>();
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ForeachRawType<NuqStream, TestT>();
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}
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// Generates inputs: deterministic, within max SfpStream range.
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template <typename MatT>
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MatStorageT<MatT> GenerateMat(const Extents2D& extents, hwy::ThreadPool& pool) {
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gcpp::CompressWorkingSet ws;
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MatStorageT<float> raw("raw", extents, MatPadding::kPacked);
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MatStorageT<MatT> compressed("mat", extents, MatPadding::kPacked);
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const float scale = SfpStream::kMax / extents.Area();
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pool.Run(0, extents.rows, [&](const size_t r, size_t /*thread*/) {
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float* HWY_RESTRICT row = raw.Row(r);
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for (size_t c = 0; c < extents.cols; c++) {
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float f = static_cast<float>(r * extents.cols + c) * scale;
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if ((r + c) & 1) f = -f; // Also generate some negative values.
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row[c] = f;
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}
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});
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Compress(raw.Packed(), raw.Extents().Area(), ws, compressed.Span(),
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/*packed_ofs=*/0, pool);
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compressed.SetScale(0.6f); // Arbitrary value, different from 1.
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return compressed;
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}
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// `extents` describes the transposed matrix.
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template <typename MatT>
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MatStorageT<MatT> GenerateTransposedMat(const Extents2D extents,
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hwy::ThreadPool& pool) {
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gcpp::CompressWorkingSet ws;
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MatStorageT<float> raw("raw", extents, MatPadding::kPacked);
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MatStorageT<MatT> compressed("trans", extents, MatPadding::kPacked);
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const float scale = SfpStream::kMax / extents.Area();
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pool.Run(0, extents.rows, [&](const size_t r, size_t /*thread*/) {
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float* HWY_RESTRICT row = raw.Row(r);
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for (size_t c = 0; c < extents.cols; c++) {
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float f = static_cast<float>(c * extents.rows + r) * scale;
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if ((r + c) & 1) f = -f; // Also generate some negative values.
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row[c] = f;
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}
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});
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Compress(raw.Packed(), raw.Extents().Area(), ws, compressed.Span(),
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/*packed_ofs=*/0, pool);
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// Arbitrary value, different from 1, must match `GenerateMat`.
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compressed.SetScale(0.6f);
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return compressed;
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}
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// NOLINTNEXTLINE(google-readability-namespace-comments)
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} // namespace HWY_NAMESPACE
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} // namespace gcpp
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HWY_AFTER_NAMESPACE();
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#endif // NOLINT
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