#pragma once
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#include "caffe2/core/common_omp.h"
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#include "caffe2/core/operator.h"
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namespace caffe2 {
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template <typename Context>
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void rmsprop_update(
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int N,
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const float* g,
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const float* ms,
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const float* mom,
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float* ng,
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float* nms,
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float* nmom,
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float decay,
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float momentum,
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float epsilon,
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const float* lr,
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Context* context);
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template <typename T, class Context>
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class RmsPropOp final : public Operator<Context> {
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public:
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USE_OPERATOR_CONTEXT_FUNCTIONS;
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RmsPropOp(const OperatorDef& operator_def, Workspace* ws)
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: Operator<Context>(operator_def, ws),
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decay_(this->template GetSingleArgument<float>("decay", 0.9f)),
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momentum_(this->template GetSingleArgument<float>("momentum", 0.0f)),
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epsilon_(this->template GetSingleArgument<float>("epsilon", 1e-5f)) {}
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bool RunOnDevice() override {
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CAFFE_ENFORCE(Input(LR).numel() == 1);
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CAFFE_ENFORCE(Input(GRAD).numel() == Input(MEAN_SQUARES).numel());
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CAFFE_ENFORCE(Input(GRAD).numel() == Input(OUTPUT_MOMENTUM).numel());
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Output(OUTPUT_GRAD)->ResizeLike(Input(GRAD));
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Output(OUTPUT_GRAD)->ResizeLike(Input(GRAD));
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Output(OUTPUT_MEAN_SQUARES)->ResizeLike(Input(MEAN_SQUARES));
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Output(OUTPUT_MOMENTUM)->ResizeLike(Input(MOMENTUM));
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rmsprop_update<Context>(
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Input(GRAD).numel(),
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Input(GRAD).template data<T>(),
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Input(MEAN_SQUARES).template data<T>(),
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Input(MOMENTUM).template data<T>(),
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Output(OUTPUT_GRAD)->template mutable_data<T>(),
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Output(OUTPUT_MEAN_SQUARES)->template mutable_data<T>(),
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Output(OUTPUT_MOMENTUM)->template mutable_data<T>(),
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decay_,
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momentum_,
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epsilon_,
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Input(LR).template data<T>(),
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&context_);
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return true;
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}
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protected:
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T decay_{0.9};
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T momentum_{0.0};
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T epsilon_{1e-8};
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INPUT_TAGS(GRAD, MEAN_SQUARES, MOMENTUM, LR);
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OUTPUT_TAGS(OUTPUT_GRAD, OUTPUT_MEAN_SQUARES, OUTPUT_MOMENTUM);
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};
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}
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