Tao Luo
7 years ago
parent
461ca35be1
commit
405b2486db
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cc_library(load_combine_impl SRCS load_combine.cc DEPS scope lod_tensor device_context op_registry data_type_transform)
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// Copyright (c) 2018 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 "paddle/fluid/operators/impl/load_combine.h"
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namespace paddle {
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namespace operators {
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namespace impl {
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void LoadParamsFromStream(const std::vector<std::string> &out_var_names,
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const paddle::platform::Place &place,
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bool load_as_fp16, std::istream *buffer,
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const paddle::framework::Scope *scope) {
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auto *dev_ctx = platform::DeviceContextPool::Instance().Get(place);
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for (size_t i = 0; i < out_var_names.size(); i++) {
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auto *out_var = scope->FindVar(out_var_names[i]);
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PADDLE_ENFORCE(out_var != nullptr, "Output variable %s cannot be found",
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out_var_names[i]);
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auto *tensor = out_var->GetMutable<framework::LoDTensor>();
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// Get data from fin to tensor
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DeserializeFromStream(*buffer, tensor, *dev_ctx);
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auto in_dtype = framework::ToDataType(tensor->type());
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auto out_dtype = load_as_fp16 ? framework::proto::VarType::FP16 : in_dtype;
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if (in_dtype != out_dtype) {
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// convert to float16 tensor
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auto in_kernel_type = framework::OpKernelType(in_dtype, place);
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auto out_kernel_type = framework::OpKernelType(out_dtype, place);
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framework::LoDTensor fp16_tensor;
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// copy LoD info to the new tensor
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fp16_tensor.set_lod(tensor->lod());
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framework::TransDataType(in_kernel_type, out_kernel_type, *tensor,
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&fp16_tensor);
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// reset output tensor
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out_var->Clear();
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tensor = out_var->GetMutable<framework::LoDTensor>();
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tensor->set_lod(fp16_tensor.lod());
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tensor->ShareDataWith(fp16_tensor);
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}
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}
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}
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} // namespace impl
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} // namespace operators
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} // namespace paddle
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// Copyright (c) 2018 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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#pragma once
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#include <string>
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#include <vector>
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#include "paddle/fluid/framework/data_type_transform.h"
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#include "paddle/fluid/framework/op_registry.h"
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#include "paddle/fluid/platform/device_context.h"
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namespace paddle {
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namespace operators {
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namespace impl {
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// Load parameters from a single stream.
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void LoadParamsFromStream(const std::vector<std::string> &out_var_names,
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const platform::Place &place, bool load_as_fp16,
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std::istream *buffer, const framework::Scope *scope);
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} // namespace impl
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} // namespace operators
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} // namespace paddle
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