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75 lines
2.8 KiB
Plaintext
75 lines
2.8 KiB
Plaintext
/*
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* Copyright (c) 2020-2023, 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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#include <cuda_runtime_api.h>
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#include <cub/device/device_scan.cuh>
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#include "cumsumLastDim.h"
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namespace tensorrt_llm
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{
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namespace kernels
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{
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template <typename input_t>
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size_t invokeComputeCumsumLastDimWorkspaceSize(int input_length)
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{
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input_t* iodata = nullptr;
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size_t temp_storage_bytes;
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cub::DeviceScan::InclusiveSum(nullptr, temp_storage_bytes, iodata, iodata, input_length);
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return temp_storage_bytes;
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}
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#define INSTANTIATE_COMPUTE_CUMSUM_LastDim_WORKSPACE_SIZE_DATA_TYPE(input_t) \
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template size_t invokeComputeCumsumLastDimWorkspaceSize<input_t>(int input_length)
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INSTANTIATE_COMPUTE_CUMSUM_LastDim_WORKSPACE_SIZE_DATA_TYPE(int);
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INSTANTIATE_COMPUTE_CUMSUM_LastDim_WORKSPACE_SIZE_DATA_TYPE(float);
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INSTANTIATE_COMPUTE_CUMSUM_LastDim_WORKSPACE_SIZE_DATA_TYPE(half);
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#ifdef ENABLE_BF16
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INSTANTIATE_COMPUTE_CUMSUM_LastDim_WORKSPACE_SIZE_DATA_TYPE(__nv_bfloat16);
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#endif
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#undef INSTANTIATE_COMPUTE_CUMSUM_LastDim_WORKSPACE_SIZE_DATA_TYPE
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///////////////
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template <typename input_t>
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void invokeCumsumLastDim(int batch_size, int input_length, void const* __restrict__ input, void* __restrict__ output,
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void* d_temp_storage, size_t temp_storage_bytes, cudaStream_t stream)
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{
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for (int i = 0; i < batch_size; i++)
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{
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input_t const* input_ptr = reinterpret_cast<input_t const*>(input) + i * input_length;
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input_t* output_ptr = reinterpret_cast<input_t*>(output) + i * input_length;
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cub::DeviceScan::InclusiveSum(d_temp_storage, temp_storage_bytes, input_ptr, output_ptr, input_length, stream);
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}
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}
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#define INSTANTIATE_CUMSUM_LastDim_DATA_TYPE(input_t) \
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template void invokeCumsumLastDim<input_t>(int batch_size, int input_length, const void* __restrict__ input, \
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void* __restrict__ output, void* workspace, size_t temp_storage_bytes, cudaStream_t stream)
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INSTANTIATE_CUMSUM_LastDim_DATA_TYPE(int);
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INSTANTIATE_CUMSUM_LastDim_DATA_TYPE(float);
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INSTANTIATE_CUMSUM_LastDim_DATA_TYPE(half);
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#ifdef ENABLE_BF16
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INSTANTIATE_CUMSUM_LastDim_DATA_TYPE(__nv_bfloat16);
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#endif
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#undef INSTANTIATE_CUMSUM_LastDim_DATA_TYPE
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} // namespace kernels
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} // namespace tensorrt_llm
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