{"action":"opened","issue":{"url":"https://api.github.com/repos/caffe2/caffe2/issues/2376","repository_url":"https://api.github.com/repos/caffe2/caffe2","labels_url":"https://api.github.com/repos/caffe2/caffe2/issues/2376/labels{/name}","comments_url":"https://api.github.com/repos/caffe2/caffe2/issues/2376/comments","events_url":"https://api.github.com/repos/caffe2/caffe2/issues/2376/events","html_url":"https://github.com/caffe2/caffe2/issues/2376","id":307728313,"number":2376,"title":"MKL-DNN integration does not support backward pass","user":{"login":"Maratyszcza","id":1093985,"avatar_url":"https://avatars1.githubusercontent.com/u/1093985?v=4","gravatar_id":"","url":"https://api.github.com/users/Maratyszcza","html_url":"https://github.com/Maratyszcza","followers_url":"https://api.github.com/users/Maratyszcza/followers","following_url":"https://api.github.com/users/Maratyszcza/following{/other_user}","gists_url":"https://api.github.com/users/Maratyszcza/gists{/gist_id}","starred_url":"https://api.github.com/users/Maratyszcza/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Maratyszcza/subscriptions","organizations_url":"https://api.github.com/users/Maratyszcza/orgs","repos_url":"https://api.github.com/users/Maratyszcza/repos","events_url":"https://api.github.com/users/Maratyszcza/events{/privacy}","received_events_url":"https://api.github.com/users/Maratyszcza/received_events","type":"User","site_admin":false},"labels":[{"id":228959845,"url":"https://api.github.com/repos/caffe2/caffe2/labels/help%20wanted","name":"help wanted","color":"159818","default":true}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-03-22T16:51:06Z","updated_at":"2018-03-22T16:51:06Z","closed_at":null,"author_association":"CONTRIBUTOR","body":"MKL-DNN integration (in [caffe2/mkl](https://github.com/caffe2/caffe2/tree/master/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)."}}
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