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.
66 lines
2.2 KiB
66 lines
2.2 KiB
/* Copyright (c) 2016 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. */
|
|
|
|
#pragma once
|
|
|
|
#include "paddle/framework/data_type.h"
|
|
#include "paddle/framework/framework.pb.h"
|
|
#include "paddle/framework/op_registry.h"
|
|
#include "paddle/platform/transform.h"
|
|
|
|
namespace paddle {
|
|
namespace operators {
|
|
|
|
template <typename InT, typename OutT>
|
|
struct CastOpTransformFunctor {
|
|
HOSTDEVICE OutT operator()(InT in) const { return static_cast<OutT>(in); }
|
|
};
|
|
|
|
template <typename DeviceContext, typename InT>
|
|
struct CastOpFunctor {
|
|
const framework::Tensor* in_;
|
|
framework::Tensor* out_;
|
|
const DeviceContext& ctx_;
|
|
CastOpFunctor(const framework::Tensor* in, framework::Tensor* out,
|
|
const DeviceContext& ctx)
|
|
: in_(in), out_(out), ctx_(ctx) {}
|
|
|
|
template <typename OutT>
|
|
void operator()() const {
|
|
auto* in_begin = in_->data<InT>();
|
|
auto numel = in_->numel();
|
|
auto* in_end = in_begin + numel;
|
|
auto* out_begin = out_->mutable_data<OutT>(ctx_.GetPlace());
|
|
platform::Transform<DeviceContext> trans;
|
|
trans(ctx_, in_begin, in_end, out_begin,
|
|
CastOpTransformFunctor<InT, OutT>());
|
|
}
|
|
};
|
|
|
|
template <typename DeviceContext, typename InT>
|
|
class CastOpKernel : public framework::OpKernel<InT> {
|
|
public:
|
|
void Compute(const framework::ExecutionContext& context) const override {
|
|
auto* in = context.Input<framework::Tensor>("X");
|
|
auto* out = context.Output<framework::Tensor>("Out");
|
|
framework::VisitDataType(
|
|
static_cast<framework::proto::DataType>(context.Attr<int>("out_dtype")),
|
|
CastOpFunctor<DeviceContext, InT>(
|
|
in, out, context.template device_context<DeviceContext>()));
|
|
}
|
|
};
|
|
|
|
} // namespace operators
|
|
} // namespace paddle
|