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269 lines
11 KiB
Plaintext
269 lines
11 KiB
Plaintext
// Copyright (c) 2024 PaddlePaddle Authors. 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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#include "helper.h" // NOLINT
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template <typename T, int VecSize>
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__global__ void RebuildPaddingKernel(T *output_data,
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const T *input_data,
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const int *cu_seqlens_q,
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const int *seq_len_this_time,
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const int *seq_len_decoder,
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const int *seq_len_encoder,
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const int max_input_length,
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const int dim_embed,
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const int elem_nums) {
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using LoadT = AlignedVector<T, VecSize>;
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LoadT src_vec;
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const int global_idx = blockDim.x * blockIdx.x + threadIdx.x;
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for (int i = global_idx * VecSize; i < elem_nums;
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i += gridDim.x * blockDim.x * VecSize) {
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const int bi = i / dim_embed;
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const int bias_idx = i % dim_embed;
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int seq_id = 0;
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if (seq_len_this_time[bi] == 0) continue;
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if (seq_len_decoder[bi] == 0 && seq_len_encoder[bi] == 0) continue;
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if (seq_len_encoder[bi] > 0) seq_id = seq_len_encoder[bi] - 1;
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const int ori_token_idx =
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cu_seqlens_q[bi] + seq_id;
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const int src_offset = ori_token_idx * dim_embed + bias_idx;
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Load<T, VecSize>(&input_data[src_offset], &src_vec);
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Store<T, VecSize>(src_vec, &output_data[i]);
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}
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}
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template <typename T, int VecSize>
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__global__ void RebuildAppendPaddingKernel(T *output_data,
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const T *input_data,
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const int *cu_seqlens_q,
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const int *seq_len_this_time,
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const int *seq_len_decoder,
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const int *seq_len_encoder,
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const int *output_padding_offset,
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const int max_input_length,
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const int dim_embed,
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const int64_t output_elem_nums,
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const int bsz) {
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AlignedVector<T, VecSize> src_vec;
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const int64_t global_idx = blockDim.x * blockIdx.x + threadIdx.x;
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for (int64_t i = global_idx * VecSize; i < output_elem_nums;
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i += gridDim.x * blockDim.x * VecSize) {
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const int out_token_id = i / dim_embed;
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const int ori_token_id = out_token_id + output_padding_offset[out_token_id];
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const int bi = ori_token_id / max_input_length;
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int seq_id = 0;
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if (seq_len_this_time[bi] == 0) continue;
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if (seq_len_decoder[bi] == 0 && seq_len_encoder[bi] == 0) continue;
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if (seq_len_encoder[bi] > 0) seq_id = seq_len_encoder[bi] - 1;
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const int cum_offset_bi = bi * max_input_length - cu_seqlens_q[bi];
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const int input_token_id = ori_token_id - cum_offset_bi + seq_id;
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const int bias_idx = i % dim_embed;
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Load<T, VecSize>(&input_data[input_token_id * dim_embed + bias_idx],
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&src_vec);
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Store<T, VecSize>(src_vec, &output_data[i]);
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}
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}
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template <paddle::DataType D>
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std::vector<paddle::Tensor> rebuild_padding(
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const paddle::Tensor &tmp_out, // [token_num, dim_embed]
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const paddle::Tensor &cu_seqlens_q, // [bsz+1, 1]
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const paddle::Tensor &seq_len_this_time,
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const paddle::Tensor &seq_lens_decoder,
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const paddle::Tensor &seq_lens_encoder,
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const paddle::optional<paddle::Tensor> &output_padding_offset,
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int max_input_length) {
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typedef PDTraits<D> traits_;
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typedef typename traits_::DataType DataType_;
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typedef typename traits_::data_t data_t;
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#ifdef PADDLE_WITH_CUSTOM_DEVICE
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auto dev_ctx = static_cast<const phi::CustomContext*>(paddle::experimental::DeviceContextPool::Instance().Get(tmp_out.place()));
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auto cu_stream = dev_ctx->stream();
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#else
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auto cu_stream = tmp_out.stream();
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#endif
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std::vector<int64_t> tmp_out_shape = tmp_out.shape();
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const int token_num = tmp_out_shape[0];
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const int dim_embed = tmp_out_shape[1];
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const int bsz = cu_seqlens_q.shape()[0] - 1;
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paddle::Tensor out;
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if (output_padding_offset) {
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int need_delete_token_num = 0;
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auto seq_lens_encoder_cpu =
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seq_lens_encoder.copy_to(paddle::CPUPlace(), true);
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for (int i = 0; i < bsz; ++i) {
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if (seq_lens_encoder_cpu.data<int>()[i] > 0) {
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need_delete_token_num +=
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seq_lens_encoder_cpu.data<int>()[i] - 1;
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}
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}
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out = paddle::full({token_num - need_delete_token_num, dim_embed},
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0,
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D,
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tmp_out.place());
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} else {
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out =
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paddle::full({bsz, dim_embed}, 0, tmp_out.dtype(), tmp_out.place());
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}
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constexpr int PackSize = VEC_16B / sizeof(DataType_);
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int elem_nums = out.numel();
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int pack_num = elem_nums / PackSize;
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const int blocksize = 128;
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const int grid_size = (pack_num + blocksize - 1) / blocksize;
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if (output_padding_offset) {
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RebuildAppendPaddingKernel<DataType_, PackSize>
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<<<grid_size, blocksize, 0, cu_stream>>>(
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reinterpret_cast<DataType_ *>(out.data<data_t>()),
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reinterpret_cast<const DataType_ *>(tmp_out.data<data_t>()),
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cu_seqlens_q.data<int>(),
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seq_len_this_time.data<int>(),
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seq_lens_decoder.data<int>(),
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seq_lens_encoder.data<int>(),
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output_padding_offset.get_ptr()->data<int>(),
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max_input_length,
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dim_embed,
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elem_nums,
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bsz);
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} else {
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RebuildPaddingKernel<DataType_, PackSize>
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<<<grid_size, blocksize, 0, cu_stream>>>(
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reinterpret_cast<DataType_ *>(out.data<data_t>()),
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reinterpret_cast<DataType_ *>(
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const_cast<data_t *>(tmp_out.data<data_t>())),
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cu_seqlens_q.data<int>(),
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seq_len_this_time.data<int>(),
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seq_lens_decoder.data<int>(),
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seq_lens_encoder.data<int>(),
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max_input_length,
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dim_embed,
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elem_nums);
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}
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return {out};
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}
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paddle::Tensor RebuildPaddingFunc(
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const paddle::Tensor &tmp_out, // [token_num, dim_embed]
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const paddle::Tensor &cu_seqlens_q, // [bsz+1, 1]
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const paddle::Tensor &seq_len_this_time,
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const paddle::Tensor &seq_lens_decoder,
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const paddle::Tensor &seq_lens_encoder,
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const paddle::optional<paddle::Tensor> &output_padding_offset,
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int max_input_length) {
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switch (tmp_out.type()) {
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case paddle::DataType::BFLOAT16: {
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return rebuild_padding<paddle::DataType::BFLOAT16>(
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tmp_out,
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cu_seqlens_q,
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seq_len_this_time,
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seq_lens_decoder,
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seq_lens_encoder,
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output_padding_offset,
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max_input_length)[0];
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}
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case paddle::DataType::FLOAT16: {
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return rebuild_padding<paddle::DataType::FLOAT16>(
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tmp_out,
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cu_seqlens_q,
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seq_len_this_time,
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seq_lens_decoder,
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seq_lens_encoder,
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output_padding_offset,
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max_input_length)[0];
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}
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case paddle::DataType::FLOAT32: {
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return rebuild_padding<paddle::DataType::FLOAT32>(
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tmp_out,
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cu_seqlens_q,
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seq_len_this_time,
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seq_lens_decoder,
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seq_lens_encoder,
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output_padding_offset,
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max_input_length)[0];
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}
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default: {
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PD_THROW(
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"NOT supported data type. "
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"Only float16, bfloat16 and float32 are supported. ");
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break;
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}
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}
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}
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std::vector<paddle::Tensor> RebuildPadding(
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const paddle::Tensor &tmp_out, // [token_num, dim_embed]
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const paddle::Tensor &cu_seqlens_q, // [bsz+1, 1]
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const paddle::Tensor &seq_len_this_time,
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const paddle::Tensor &seq_lens_decoder,
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const paddle::Tensor &seq_lens_encoder,
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const paddle::optional<paddle::Tensor> &output_padding_offset,
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int max_input_length) {
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return {RebuildPaddingFunc(tmp_out,
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cu_seqlens_q,
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seq_len_this_time,
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seq_lens_decoder,
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seq_lens_encoder,
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output_padding_offset,
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max_input_length)};
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}
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std::vector<std::vector<int64_t>> RebuildPaddingInferShape(
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const std::vector<int64_t> &tmp_out_shape,
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const std::vector<int64_t> &cu_seqlens_q_shape,
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const std::vector<int64_t> &seq_len_this_time_shape,
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const std::vector<int64_t> &seq_lens_decoder_shape,
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const std::vector<int64_t> &seq_lens_encoder_shape,
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const paddle::optional<std::vector<int64_t>> &output_padding_offset_shape) {
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int64_t dim_embed = tmp_out_shape[1];
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// whether speculative decoding
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if (output_padding_offset_shape) {
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return {{-1, dim_embed}};
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} else {
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int64_t bsz = cu_seqlens_q_shape[0] - 1;
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return {{bsz, dim_embed}};
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}
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}
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std::vector<paddle::DataType> RebuildPaddingInferDtype(
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const paddle::DataType &tmp_out_dtype,
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const paddle::DataType &cu_seqlens_q_dtype,
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const paddle::DataType &seq_len_this_time_dtype,
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const paddle::DataType &seq_lens_decoder_dtype,
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const paddle::DataType &seq_lens_encoder_dtype,
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const paddle::optional<paddle::DataType> &output_padding_offset_dtype) {
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return {tmp_out_dtype};
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}
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PD_BUILD_STATIC_OP(rebuild_padding)
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.Inputs({"tmp_out",
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"cu_seqlens_q",
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"seq_len_this_time",
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"seq_lens_decoder",
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"seq_lens_encoder",
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paddle::Optional("output_padding_offset")})
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.Outputs({"out"})
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.Attrs({"max_input_length: int"})
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.SetKernelFn(PD_KERNEL(RebuildPadding))
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.SetInferShapeFn(PD_INFER_SHAPE(RebuildPaddingInferShape))
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.SetInferDtypeFn(PD_INFER_DTYPE(RebuildPaddingInferDtype));
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