TensorRT-LLMs/cpp/tensorrt_llm/kernels/decoderMaskedMultiheadAttention/decoderXQAConstants.h
Kaiyu Xie e06f537e08
Update TensorRT-LLM (#1019)
* Update TensorRT-LLM

---------

Co-authored-by: erenup <ping.nie@pku.edu.cn>
Co-authored-by: Shixiaowei02 <39303645+Shixiaowei02@users.noreply.github.com>
2024-01-31 21:55:32 +08:00

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1.3 KiB
C++

/*
* Copyright (c) 2020-2023, NVIDIA CORPORATION. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file contains constants that decoderXQA*.{h,cpp} need.
*/
#pragma once
namespace tensorrt_llm
{
namespace kernels
{
// max number of CTAs for each KV head, multiple CTAs for one KV head is multi-block mode.
// this number defines the maximum number when reaches both max_batch_size and max_beam_width.
// If batch_size or beam_width doesn't reach maximum value, it is possible to have more CTAs per KV head than this
// value.
static constexpr int kMaxNbCtaPerKVHeadFactor = 8;
static constexpr int kMinHistoryTokensPerBlock = 512;
static constexpr float kEnableMinBlockFactor = 4.0;
static constexpr int kTargetWaveFactor = 8;
} // namespace kernels
} // namespace tensorrt_llm