mirror of
https://github.com/NVIDIA/TensorRT-LLM.git
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139 lines
3.5 KiB
C++
139 lines
3.5 KiB
C++
/*
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* Copyright (c) 2024, NVIDIA CORPORATION. All rights reserved.
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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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* http://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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*/
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#pragma once
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namespace tensorrt_llm
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{
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namespace runtime
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{
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class DecodingMode
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{
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public:
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static auto constexpr None()
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{
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return DecodingMode{kNone};
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}
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static auto constexpr TopK()
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{
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return DecodingMode{kTopK};
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}
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static auto constexpr TopP()
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{
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return DecodingMode{kTopP};
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}
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static auto constexpr TopKTopP()
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{
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return DecodingMode{kTopKTopP};
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}
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static auto constexpr BeamSearch()
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{
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return DecodingMode{kBeamSearch};
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}
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bool constexpr isNone()
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{
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return mState == 0;
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}
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bool constexpr isTopK()
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{
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return anyBitSet(kTopK);
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}
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bool constexpr isTopP()
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{
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return anyBitSet(kTopP);
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}
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bool constexpr isTopKorTopP()
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{
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return anyBitSet(kTopKTopP);
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}
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bool constexpr isTopKandTopP()
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{
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return allBitSet(kTopKTopP);
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}
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bool constexpr isBeamSearch()
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{
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return anyBitSet(kBeamSearch);
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}
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using UnderlyingType = uint8_t;
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private:
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constexpr DecodingMode(UnderlyingType state)
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: mState(state)
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{
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}
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// No mode specified. Config will be determined from the beam width of the first request at runtime
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// TopKTopP if beamWidth == 1, BeamSearch otherwise
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static UnderlyingType constexpr kNone{0};
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static UnderlyingType constexpr kTopK{1u << 0};
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static UnderlyingType constexpr kTopP{1u << 1};
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static UnderlyingType constexpr kBeamSearch{1u << 2};
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static UnderlyingType constexpr kTopKTopP{kTopK | kTopP};
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bool constexpr anyBitSet(UnderlyingType bits) const
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{
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return (mState & bits) != 0;
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}
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bool constexpr allBitSet(UnderlyingType bits) const
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{
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return (mState & bits) == bits;
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}
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UnderlyingType mState{};
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};
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static_assert(DecodingMode::None().isNone());
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static_assert(!DecodingMode::None().isTopK());
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static_assert(!DecodingMode::None().isTopP());
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static_assert(!DecodingMode::None().isBeamSearch());
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static_assert(DecodingMode::TopK().isTopK());
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static_assert(DecodingMode::TopK().isTopKorTopP());
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static_assert(!DecodingMode::TopK().isTopKandTopP());
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static_assert(!DecodingMode::TopK().isTopP());
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static_assert(!DecodingMode::TopK().isBeamSearch());
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static_assert(DecodingMode::TopP().isTopP());
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static_assert(DecodingMode::TopP().isTopKorTopP());
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static_assert(!DecodingMode::TopP().isTopKandTopP());
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static_assert(!DecodingMode::TopP().isTopK());
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static_assert(!DecodingMode::TopP().isBeamSearch());
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static_assert(DecodingMode::TopKTopP().isTopK());
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static_assert(DecodingMode::TopKTopP().isTopP());
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static_assert(DecodingMode::TopKTopP().isTopKorTopP());
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static_assert(DecodingMode::TopKTopP().isTopKandTopP());
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static_assert(!DecodingMode::TopKTopP().isBeamSearch());
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static_assert(DecodingMode::BeamSearch().isBeamSearch());
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static_assert(!DecodingMode::BeamSearch().isTopKorTopP());
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} // namespace runtime
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} // namespace tensorrt_llm
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