Merge branch 'develop' of https://github.com/PaddlePaddle/Paddle into develop
zchen0211
8 years ago
commit
0a0f194836
@ -1,53 +1,65 @@
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/* 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 <memory>
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#include <random>
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#include "paddle/platform/dynload/curand.h"
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#include "paddle/platform/gpu_info.h"
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#include <thrust/device_ptr.h>
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#include <thrust/iterator/counting_iterator.h>
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#include <thrust/random.h>
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#include <thrust/transform.h>
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#include "paddle/framework/op_registry.h"
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#include "paddle/framework/operator.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 GaussianRandomKernel : public framework::OpKernel {
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struct GaussianGenerator {
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T mean_, std_;
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unsigned int seed_;
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__host__ __device__ GaussianGenerator(T mean, T std, int seed)
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: mean_(mean), std_(std), seed_(seed) {}
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__host__ __device__ T operator()(const unsigned int n) const {
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thrust::minstd_rand rng;
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rng.seed(seed_);
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thrust::normal_distribution<T> dist(mean_, std_);
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rng.discard(n);
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return dist(rng);
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}
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};
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template <typename T>
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class GPUGaussianRandomKernel : public framework::OpKernel {
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public:
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void Compute(const framework::ExecutionContext& context) const override {
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float mean = context.op_.GetAttr<float>("mean");
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float std = context.op_.GetAttr<float>("std");
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auto* tensor = context.Output<framework::Tensor>(0);
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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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int seed = context.op_.GetAttr<int>("seed");
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unsigned int seed =
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static_cast<unsigned int>(context.op_.GetAttr<int>("seed"));
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if (seed == 0) {
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std::random_device rd;
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seed = rd();
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}
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curandGenerator_t g;
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PADDLE_ENFORCE(platform::dynload::curandCreateGenerator(
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&g, CURAND_RNG_PSEUDO_DEFAULT));
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PADDLE_ENFORCE(
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platform::dynload::curandSetPseudoRandomGeneratorSeed(g, seed));
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platform::dynload::curandGenerateNormal(
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g, data, framework::product(tensor->dims()), mean, std);
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T mean = static_cast<T>(context.op_.GetAttr<float>("mean"));
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T std = static_cast<T>(context.op_.GetAttr<float>("std"));
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thrust::counting_iterator<unsigned int> index_sequence_begin(0);
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ssize_t N = framework::product(tensor->dims());
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thrust::transform(index_sequence_begin, index_sequence_begin + N,
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thrust::device_ptr<T>(data),
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GaussianGenerator<T>(mean, std, seed));
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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_GPU_KERNEL(gaussian_random, ops::GaussianRandomKernel<float>);
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REGISTER_OP_GPU_KERNEL(gaussian_random,
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paddle::operators::GPUGaussianRandomKernel<float>);
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