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114 lines
3.8 KiB
114 lines
3.8 KiB
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 <random>
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#include "paddle/framework/op_registry.h"
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namespace paddle {
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namespace operators {
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template <typename T>
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class CPUGaussianRandomKernel : public framework::OpKernel<T> {
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public:
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void Compute(const framework::ExecutionContext& context) const override {
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float mean = context.Attr<float>("mean");
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float std = context.Attr<float>("std");
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auto* tensor = context.Output<framework::Tensor>("Out");
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T* data = tensor->mutable_data<T>(context.GetPlace());
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unsigned int seed = static_cast<unsigned int>(context.Attr<int>("seed"));
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std::minstd_rand engine;
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if (seed == 0) {
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seed = std::random_device()();
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}
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engine.seed(seed);
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std::normal_distribution<T> dist(mean, std);
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int64_t size = tensor->numel();
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for (int64_t i = 0; i < size; ++i) {
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data[i] = dist(engine);
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}
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}
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};
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class GaussianRandomOp : public framework::OperatorWithKernel {
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public:
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using framework::OperatorWithKernel::OperatorWithKernel;
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void InferShape(framework::InferShapeContext* ctx) const override {
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PADDLE_ENFORCE(ctx->HasOutput("Out"),
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"Output(Out) of GaussianRandomOp should not be null.");
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auto shape = ctx->Attrs().Get<std::vector<int>>("shape");
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std::vector<int64_t> temp;
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temp.reserve(shape.size());
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for (auto dim : shape) {
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temp.push_back(static_cast<int64_t>(dim));
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}
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PADDLE_ENFORCE(shape.size() > 0UL,
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"shape can be one int or array. shape must be set.");
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ctx->SetOutputDim("Out", framework::make_ddim(temp));
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}
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protected:
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framework::OpKernelType GetExpectedKernelType(
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const framework::ExecutionContext& ctx) const override {
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return framework::OpKernelType(
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static_cast<framework::proto::DataType>(ctx.Attr<int>("dtype")),
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ctx.device_context());
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}
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};
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class GaussianRandomOpMaker : public framework::OpProtoAndCheckerMaker {
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public:
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GaussianRandomOpMaker(OpProto* proto, OpAttrChecker* op_checker)
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: framework::OpProtoAndCheckerMaker(proto, op_checker) {
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AddOutput("Out", "Output matrix of gaussian random op");
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AddAttr<std::vector<int>>("shape",
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"(vector<int>) "
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"The dimension of random tensor.");
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AddAttr<float>("mean",
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"(float, default 0.0) "
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"mean of random tensor.")
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.SetDefault(.0f);
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AddAttr<float>("std",
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"(float, default 1.0) "
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"std of random tensor.")
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.SetDefault(1.0f);
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AddAttr<int>("seed",
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"(int, default 0) "
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"Random seed of generator."
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"0 means use system wide seed.")
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.SetDefault(0);
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AddAttr<int>("dtype",
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"(int, default 5(FP32)) "
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"Output data type.")
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.SetDefault(framework::proto::DataType::FP32);
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AddComment(R"DOC(
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GaussianRandom Operator.
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Used to initialize tensors with gaussian random generator.
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)DOC");
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}
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};
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} // namespace operators
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} // namespace paddle
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namespace ops = paddle::operators;
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REGISTER_OP_WITHOUT_GRADIENT(gaussian_random, ops::GaussianRandomOp,
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ops::GaussianRandomOpMaker);
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REGISTER_OP_CPU_KERNEL(gaussian_random, ops::CPUGaussianRandomKernel<float>);
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