sglang_v0.5.2/flashinfer_0.3.1/include/flashinfer/trtllm/fmha/fmhaRunner.cuh

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/*
* 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.
*/
#pragma once
#include <cuda_runtime.h>
#include "fmhaKernels.cuh"
#include "fmhaRunnerParams.h"
class TllmGenFmhaRunner {
public:
// Constructor.
explicit TllmGenFmhaRunner(Data_type dtypeQ, Data_type dtypeKv, Data_type dtypeOut)
: mSM(getSMVersion()), mDtypeQ(dtypeQ), mDtypeKv(dtypeKv), mDtypeOut(dtypeOut) {
TORCH_CHECK(mSM == kSM_100 || mSM == kSM_103, "Unsupported architecture");
TORCH_CHECK(mDtypeQ == DATA_TYPE_E4M3 || mDtypeQ == DATA_TYPE_FP16 || mDtypeQ == DATA_TYPE_BF16,
"Unsupported Q data type: " + std::string(toStr(mDtypeQ)));
TORCH_CHECK(
mDtypeKv == DATA_TYPE_E4M3 || mDtypeKv == DATA_TYPE_FP16 || mDtypeKv == DATA_TYPE_BF16,
"Unsupported Kv data type: " + std::string(toStr(mDtypeKv)));
TORCH_CHECK(mDtypeOut == DATA_TYPE_E4M3 || mDtypeOut == DATA_TYPE_FP16 ||
mDtypeOut == DATA_TYPE_BF16 || mDtypeOut == DATA_TYPE_E2M1,
"Unsupported Output data type: " + std::string(toStr(mDtypeOut)));
mKernel = getTllmFmhaKernels(mDtypeQ, mDtypeKv, mDtypeOut, mSM);
}
TllmGenFmhaRunner() = default;
// Check if fmha is supported.
bool isSupported(TllmGenFmhaRunnerParams const& runnerParams) {
return mKernel->checkIfKernelExist(runnerParams).first;
}
// Check if fmha is supported with additional info.
std::pair<bool, std::string> isSupportedWithInfo(
TllmGenFmhaRunnerParams const& runnerParams) const {
return mKernel->checkIfKernelExist(runnerParams);
}
// Run the fmha kernel.
void run(TllmGenFmhaRunnerParams const& runnerParams) { mKernel->run(runnerParams); }
private:
// The input/output datatype.
Data_type mDtypeQ, mDtypeKv, mDtypeOut;
// The SM version.
int mSM;
// The class that stores all the kernels.
TllmGenFmhaKernel const* mKernel;
};