X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fnnue%2Flayers%2Fclipped_relu.h;h=aab824b357266079c4d7bce15fe4c86b8d684c9b;hb=97f706ecc11459c8d0aa1901134d12fba00b4b15;hp=7e5fcf4ac59399ac0a2310763fd9e30da689d9bf;hpb=a6e89293df5af35931b61d86b6de3872a981c100;p=stockfish diff --git a/src/nnue/layers/clipped_relu.h b/src/nnue/layers/clipped_relu.h index 7e5fcf4a..aab824b3 100644 --- a/src/nnue/layers/clipped_relu.h +++ b/src/nnue/layers/clipped_relu.h @@ -1,6 +1,6 @@ /* Stockfish, a UCI chess playing engine derived from Glaurung 2.1 - Copyright (C) 2004-2020 The Stockfish developers (see AUTHORS file) + Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file) Stockfish is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -21,129 +21,162 @@ #ifndef NNUE_LAYERS_CLIPPED_RELU_H_INCLUDED #define NNUE_LAYERS_CLIPPED_RELU_H_INCLUDED +#include +#include +#include + #include "../nnue_common.h" -namespace Eval::NNUE::Layers { +namespace Stockfish::Eval::NNUE::Layers { // Clipped ReLU - template + template class ClippedReLU { public: // Input/output type - using InputType = typename PreviousLayer::OutputType; + using InputType = std::int32_t; using OutputType = std::uint8_t; - static_assert(std::is_same::value, ""); // Number of input/output dimensions - static constexpr IndexType kInputDimensions = - PreviousLayer::kOutputDimensions; - static constexpr IndexType kOutputDimensions = kInputDimensions; - - // Size of forward propagation buffer used in this layer - static constexpr std::size_t kSelfBufferSize = - CeilToMultiple(kOutputDimensions * sizeof(OutputType), kCacheLineSize); + static constexpr IndexType InputDimensions = InDims; + static constexpr IndexType OutputDimensions = InputDimensions; + static constexpr IndexType PaddedOutputDimensions = + ceil_to_multiple(OutputDimensions, 32); - // Size of the forward propagation buffer used from the input layer to this layer - static constexpr std::size_t kBufferSize = - PreviousLayer::kBufferSize + kSelfBufferSize; + using OutputBuffer = OutputType[PaddedOutputDimensions]; // Hash value embedded in the evaluation file - static constexpr std::uint32_t GetHashValue() { - std::uint32_t hash_value = 0x538D24C7u; - hash_value += PreviousLayer::GetHashValue(); - return hash_value; + static constexpr std::uint32_t get_hash_value(std::uint32_t prevHash) { + std::uint32_t hashValue = 0x538D24C7u; + hashValue += prevHash; + return hashValue; } // Read network parameters - bool ReadParameters(std::istream& stream) { - return previous_layer_.ReadParameters(stream); + bool read_parameters(std::istream&) { + return true; + } + + // Write network parameters + bool write_parameters(std::ostream&) const { + return true; } // Forward propagation - const OutputType* Propagate( - const TransformedFeatureType* transformed_features, char* buffer) const { - const auto input = previous_layer_.Propagate( - transformed_features, buffer + kSelfBufferSize); - const auto output = reinterpret_cast(buffer); + void propagate( + const InputType* input, OutputType* output) const { #if defined(USE_AVX2) - constexpr IndexType kNumChunks = kInputDimensions / kSimdWidth; - const __m256i kZero = _mm256_setzero_si256(); - const __m256i kOffsets = _mm256_set_epi32(7, 3, 6, 2, 5, 1, 4, 0); - const auto in = reinterpret_cast(input); - const auto out = reinterpret_cast<__m256i*>(output); - for (IndexType i = 0; i < kNumChunks; ++i) { - const __m256i words0 = _mm256_srai_epi16(_mm256_packs_epi32( - _mm256_load_si256(&in[i * 4 + 0]), - _mm256_load_si256(&in[i * 4 + 1])), kWeightScaleBits); - const __m256i words1 = _mm256_srai_epi16(_mm256_packs_epi32( - _mm256_load_si256(&in[i * 4 + 2]), - _mm256_load_si256(&in[i * 4 + 3])), kWeightScaleBits); - _mm256_store_si256( - &out[i], _mm256_permutevar8x32_epi32(_mm256_max_epi8( - _mm256_packs_epi16(words0, words1), kZero), kOffsets)); + if constexpr (InputDimensions % SimdWidth == 0) { + constexpr IndexType NumChunks = InputDimensions / SimdWidth; + const __m256i Zero = _mm256_setzero_si256(); + const __m256i Offsets = _mm256_set_epi32(7, 3, 6, 2, 5, 1, 4, 0); + const auto in = reinterpret_cast(input); + const auto out = reinterpret_cast<__m256i*>(output); + for (IndexType i = 0; i < NumChunks; ++i) { + const __m256i words0 = _mm256_srai_epi16(_mm256_packs_epi32( + _mm256_load_si256(&in[i * 4 + 0]), + _mm256_load_si256(&in[i * 4 + 1])), WeightScaleBits); + const __m256i words1 = _mm256_srai_epi16(_mm256_packs_epi32( + _mm256_load_si256(&in[i * 4 + 2]), + _mm256_load_si256(&in[i * 4 + 3])), WeightScaleBits); + _mm256_store_si256(&out[i], _mm256_permutevar8x32_epi32(_mm256_max_epi8( + _mm256_packs_epi16(words0, words1), Zero), Offsets)); + } + } else { + constexpr IndexType NumChunks = InputDimensions / (SimdWidth / 2); + const __m128i Zero = _mm_setzero_si128(); + const auto in = reinterpret_cast(input); + const auto out = reinterpret_cast<__m128i*>(output); + for (IndexType i = 0; i < NumChunks; ++i) { + const __m128i words0 = _mm_srai_epi16(_mm_packs_epi32( + _mm_load_si128(&in[i * 4 + 0]), + _mm_load_si128(&in[i * 4 + 1])), WeightScaleBits); + const __m128i words1 = _mm_srai_epi16(_mm_packs_epi32( + _mm_load_si128(&in[i * 4 + 2]), + _mm_load_si128(&in[i * 4 + 3])), WeightScaleBits); + const __m128i packedbytes = _mm_packs_epi16(words0, words1); + _mm_store_si128(&out[i], _mm_max_epi8(packedbytes, Zero)); + } } - constexpr IndexType kStart = kNumChunks * kSimdWidth; + constexpr IndexType Start = + InputDimensions % SimdWidth == 0 + ? InputDimensions / SimdWidth * SimdWidth + : InputDimensions / (SimdWidth / 2) * (SimdWidth / 2); - #elif defined(USE_SSSE3) - constexpr IndexType kNumChunks = kInputDimensions / kSimdWidth; + #elif defined(USE_SSE2) + constexpr IndexType NumChunks = InputDimensions / SimdWidth; #ifdef USE_SSE41 - const __m128i kZero = _mm_setzero_si128(); + const __m128i Zero = _mm_setzero_si128(); #else const __m128i k0x80s = _mm_set1_epi8(-128); #endif const auto in = reinterpret_cast(input); const auto out = reinterpret_cast<__m128i*>(output); - for (IndexType i = 0; i < kNumChunks; ++i) { + for (IndexType i = 0; i < NumChunks; ++i) { const __m128i words0 = _mm_srai_epi16(_mm_packs_epi32( _mm_load_si128(&in[i * 4 + 0]), - _mm_load_si128(&in[i * 4 + 1])), kWeightScaleBits); + _mm_load_si128(&in[i * 4 + 1])), WeightScaleBits); const __m128i words1 = _mm_srai_epi16(_mm_packs_epi32( _mm_load_si128(&in[i * 4 + 2]), - _mm_load_si128(&in[i * 4 + 3])), kWeightScaleBits); + _mm_load_si128(&in[i * 4 + 3])), WeightScaleBits); const __m128i packedbytes = _mm_packs_epi16(words0, words1); _mm_store_si128(&out[i], #ifdef USE_SSE41 - _mm_max_epi8(packedbytes, kZero) + _mm_max_epi8(packedbytes, Zero) #else _mm_subs_epi8(_mm_adds_epi8(packedbytes, k0x80s), k0x80s) #endif ); } - constexpr IndexType kStart = kNumChunks * kSimdWidth; + constexpr IndexType Start = NumChunks * SimdWidth; + + #elif defined(USE_MMX) + constexpr IndexType NumChunks = InputDimensions / SimdWidth; + const __m64 k0x80s = _mm_set1_pi8(-128); + const auto in = reinterpret_cast(input); + const auto out = reinterpret_cast<__m64*>(output); + for (IndexType i = 0; i < NumChunks; ++i) { + const __m64 words0 = _mm_srai_pi16( + _mm_packs_pi32(in[i * 4 + 0], in[i * 4 + 1]), + WeightScaleBits); + const __m64 words1 = _mm_srai_pi16( + _mm_packs_pi32(in[i * 4 + 2], in[i * 4 + 3]), + WeightScaleBits); + const __m64 packedbytes = _mm_packs_pi16(words0, words1); + out[i] = _mm_subs_pi8(_mm_adds_pi8(packedbytes, k0x80s), k0x80s); + } + _mm_empty(); + constexpr IndexType Start = NumChunks * SimdWidth; #elif defined(USE_NEON) - constexpr IndexType kNumChunks = kInputDimensions / (kSimdWidth / 2); - const int8x8_t kZero = {0}; + constexpr IndexType NumChunks = InputDimensions / (SimdWidth / 2); + const int8x8_t Zero = {0}; const auto in = reinterpret_cast(input); const auto out = reinterpret_cast(output); - for (IndexType i = 0; i < kNumChunks; ++i) { + for (IndexType i = 0; i < NumChunks; ++i) { int16x8_t shifted; const auto pack = reinterpret_cast(&shifted); - pack[0] = vqshrn_n_s32(in[i * 2 + 0], kWeightScaleBits); - pack[1] = vqshrn_n_s32(in[i * 2 + 1], kWeightScaleBits); - out[i] = vmax_s8(vqmovn_s16(shifted), kZero); + pack[0] = vqshrn_n_s32(in[i * 2 + 0], WeightScaleBits); + pack[1] = vqshrn_n_s32(in[i * 2 + 1], WeightScaleBits); + out[i] = vmax_s8(vqmovn_s16(shifted), Zero); } - constexpr IndexType kStart = kNumChunks * (kSimdWidth / 2); + constexpr IndexType Start = NumChunks * (SimdWidth / 2); #else - constexpr IndexType kStart = 0; + constexpr IndexType Start = 0; #endif - for (IndexType i = kStart; i < kInputDimensions; ++i) { + for (IndexType i = Start; i < InputDimensions; ++i) { output[i] = static_cast( - std::max(0, std::min(127, input[i] >> kWeightScaleBits))); + std::clamp(input[i] >> WeightScaleBits, 0, 127)); } - return output; } - - private: - PreviousLayer previous_layer_; }; -} // namespace Eval::NNUE::Layers +} // namespace Stockfish::Eval::NNUE::Layers #endif // NNUE_LAYERS_CLIPPED_RELU_H_INCLUDED