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49 lines
2.3 KiB
C++
49 lines
2.3 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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#include "tensorrt_llm/kernels/decodingCommon.h"
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#include "tensorrt_llm/kernels/speculativeDecoding/common.h"
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#include "tensorrt_llm/runtime/common.h"
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#include <cuda_fp16.h>
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#include <cuda_runtime.h>
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#include <curand_kernel.h>
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namespace tensorrt_llm::kernels::speculative_decoding
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{
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//! \brief assembles draft tokens to treeDraftIds from sourceDraftIds using indices of treeIds
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//!
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//! \param treeDraftIds output buffer [maxBatchSize, maxDecodingTokens-1], output draft tokens
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//! scattered from sourceDraftIds according to treeIds111
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//! \param sourceDraftIds input buffer [maxBatchSize, maxDecodingTokens], draft tokens saved leanearly after
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//! sampling from Medusa heads with TopK.
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//! \param treeIds input buffer [maxBatchSize, maxDecodingTokens-1], address map from sourceDraftIds to treeDraftIds
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//! [0, unqiueDraftTokens] -> [0, maxDecodingTokens], where unqiueDraftTokens = sum(MedusaHeadsTopK)
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//! unqiueDraftTokens <= maxDraftTokens
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//! \param tokensPerStep input buffer [maxBatchSize], number of output draft tokens
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//! \param batchSlots input buffer [maxBatchSize], address map from local index
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//! to global index [0, batchSize] -> [0, maxBatchSize]
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//! \param maxDecodingTokens maximum number of tokens per step configured in the system
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//! \param batchSize current batch size
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//! \param stream cuda stream
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void scatterMedusaDraftTokens(runtime::TokenIdType* treeDraftIds, runtime::TokenIdType const* sourceDraftIds,
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runtime::SizeType32 const* treeIds, runtime::SizeType32 const* tokensPerStep, runtime::SizeType32 const* batchSlots,
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runtime::SizeType32 maxDecodingTokens, runtime::SizeType32 batchSize, cudaStream_t stream);
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} // namespace tensorrt_llm::kernels::speculative_decoding
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