You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
111 lines
3.9 KiB
111 lines
3.9 KiB
/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
|
|
|
|
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. */
|
|
#include <fstream>
|
|
|
|
#include "paddle/fluid/framework/op_registry.h"
|
|
#include "paddle/fluid/platform/device_context.h"
|
|
|
|
namespace paddle {
|
|
namespace operators {
|
|
|
|
class LoadCombineOp : public framework::OperatorBase {
|
|
public:
|
|
LoadCombineOp(const std::string &type,
|
|
const framework::VariableNameMap &inputs,
|
|
const framework::VariableNameMap &outputs,
|
|
const framework::AttributeMap &attrs)
|
|
: OperatorBase(type, inputs, outputs, attrs) {}
|
|
|
|
private:
|
|
void RunImpl(const framework::Scope &scope,
|
|
const platform::Place &place) const override {
|
|
auto filename = Attr<std::string>("file_path");
|
|
|
|
std::ifstream fin(filename);
|
|
PADDLE_ENFORCE(static_cast<bool>(fin),
|
|
"Cannot open file %s for load_combine op", filename);
|
|
|
|
auto out_var_names = Outputs("Out");
|
|
PADDLE_ENFORCE_GT(
|
|
static_cast<int>(out_var_names.size()), 0,
|
|
"The number of output variables should be greater than 0.");
|
|
|
|
platform::DeviceContextPool &pool = platform::DeviceContextPool::Instance();
|
|
auto &dev_ctx = *pool.Get(place);
|
|
|
|
for (size_t i = 0; i < out_var_names.size(); i++) {
|
|
auto *out_var = scope.FindVar(out_var_names[i]);
|
|
|
|
PADDLE_ENFORCE(out_var != nullptr, "Output variable %s cannot be found",
|
|
out_var_names[i]);
|
|
|
|
auto *tensor = out_var->GetMutable<framework::LoDTensor>();
|
|
|
|
// Error checking
|
|
PADDLE_ENFORCE(static_cast<bool>(fin), "Cannot read more from file %s",
|
|
filename);
|
|
|
|
// Get data from fin to tensor
|
|
DeserializeFromStream(fin, tensor, dev_ctx);
|
|
|
|
if (platform::is_gpu_place(place)) {
|
|
// copy CPU to GPU
|
|
framework::LoDTensor cpu_tensor;
|
|
cpu_tensor.ShareDataWith(*tensor);
|
|
cpu_tensor.set_lod(tensor->lod());
|
|
|
|
// reset tensor
|
|
out_var->Clear();
|
|
tensor = out_var->GetMutable<framework::LoDTensor>();
|
|
tensor->set_lod(cpu_tensor.lod());
|
|
Copy(cpu_tensor, place, dev_ctx, tensor);
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
class LoadCombineOpProtoMaker : public framework::OpProtoAndCheckerMaker {
|
|
public:
|
|
LoadCombineOpProtoMaker(OpProto *proto, OpAttrChecker *op_checker)
|
|
: OpProtoAndCheckerMaker(proto, op_checker) {
|
|
AddOutput(
|
|
"Out",
|
|
"(vector) The output LoDTensors that will be read from the input file.")
|
|
.AsDuplicable();
|
|
AddAttr<std::string>("file_path",
|
|
"(string) "
|
|
"LoDTensors will be loaded from \"file_path\".")
|
|
.AddCustomChecker(
|
|
[](const std::string &path) { return !path.empty(); });
|
|
AddComment(R"DOC(
|
|
LoadCombine Operator.
|
|
|
|
LoadCombine operator loads LoDTensor variables from a file. The file should
|
|
contain one or more LoDTensors serialized using the SaveCombine operator. The
|
|
LoadCombine operator applies a deserialization strategy to appropriately load
|
|
the LodTensors, and this strategy complements the serialization strategy used
|
|
in the SaveCombine operator. Hence, the LoadCombine operator is tightly coupled
|
|
with the SaveCombine operator, and can only deserialize one or more LoDTensors
|
|
that were saved using the SaveCombine operator.
|
|
|
|
)DOC");
|
|
}
|
|
};
|
|
} // namespace operators
|
|
} // namespace paddle
|
|
namespace ops = paddle::operators;
|
|
|
|
REGISTER_OPERATOR(load_combine, ops::LoadCombineOp,
|
|
ops::LoadCombineOpProtoMaker);
|