facebookarchive/caffe2

MKL-DNN integration does not support backward pass

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#2,376 创建于 2018年3月22日

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help wanted

描述

MKL-DNN integration (in caffe2/mkl) implements only forward pass operators, although MKL-DNN itself provides primitives for both forward and backward pass. Implementation of ConvGradient operator would let Caffe2 use MKL-DNN for training on CPU, and support some models which need backprop (e.g. deep dream).

贡献者指南

技术栈
cpppythonshell
领域
machine learningai
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
4
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
3-5 days
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
Knowledge of MKL DNN primitiveC++ development experienceFamiliarity with Caffe2 operator registration
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
15
研究方向
Review existing forward pass implementation in caffe2/mkl directory to understand operator structure. Study MKL DNN documentation for backward pass primitives, particularly for convolution. Examine Caffe2's gradient operator patterns elsewhere (e.g., CPU or CUDA operators) to define ConvGradient. Propose a plan with specific files to modify and tests to add.