{"action":"created","issue":{"url":"https://api.github.com/repos/Theano/Theano/issues/2792","labels_url":"https://api.github.com/repos/Theano/Theano/issues/2792/labels{/name}","comments_url":"https://api.github.com/repos/Theano/Theano/issues/2792/comments","events_url":"https://api.github.com/repos/Theano/Theano/issues/2792/events","html_url":"https://github.com/Theano/Theano/issues/2792","id":69243593,"number":2792,"title":"Follow up Average pooling","user":{"login":"nouiz","id":180987,"avatar_url":"https://avatars.githubusercontent.com/u/180987?v=3","gravatar_id":"","url":"https://api.github.com/users/nouiz","html_url":"https://github.com/nouiz","followers_url":"https://api.github.com/users/nouiz/followers","following_url":"https://api.github.com/users/nouiz/following{/other_user}","gists_url":"https://api.github.com/users/nouiz/gists{/gist_id}","starred_url":"https://api.github.com/users/nouiz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nouiz/subscriptions","organizations_url":"https://api.github.com/users/nouiz/orgs","repos_url":"https://api.github.com/users/nouiz/repos","events_url":"https://api.github.com/users/nouiz/events{/privacy}","received_events_url":"https://api.github.com/users/nouiz/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/Theano/Theano/labels/C%20Code","name":"C Code","color":"0b02e1"},{"url":"https://api.github.com/repos/Theano/Theano/labels/CCW","name":"CCW","color":"f7c6c7"},{"url":"https://api.github.com/repos/Theano/Theano/labels/Memory","name":"Memory","color":"eb6420"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":4,"created_at":"2015-04-18T00:04:36Z","updated_at":"2015-11-03T02:41:17Z","closed_at":null,"body":"gh-2783 added average pooling on the CPU. Here is what is left:\r\n\r\n- [x] Refactor to have the grad average in a different op that do not that the input of the forward as input (lower memory usage) (The refactor, rename the ops, have a common PoolGrad op that contain the common code for AveragePoolGrad and MaxPoolGrad)\r\n- [x] the grad need support for pooling\r\n- [x] need c code on the CPU.\r\n- [x] no grad of grad (it return grad not implemented)\r\n- [ ] on the GPU, this is only supported by cudnn.\r\n- [ ] average grad python code don't support padding (but c code does)."},"comment":{"url":"https://api.github.com/repos/Theano/Theano/issues/comments/153221071","html_url":"https://github.com/Theano/Theano/issues/2792#issuecomment-153221071","issue_url":"https://api.github.com/repos/Theano/Theano/issues/2792","id":153221071,"user":{"login":"dwf","id":60206,"avatar_url":"https://avatars.githubusercontent.com/u/60206?v=3","gravatar_id":"","url":"https://api.github.com/users/dwf","html_url":"https://github.com/dwf","followers_url":"https://api.github.com/users/dwf/followers","following_url":"https://api.github.com/users/dwf/following{/other_user}","gists_url":"https://api.github.com/users/dwf/gists{/gist_id}","starred_url":"https://api.github.com/users/dwf/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dwf/subscriptions","organizations_url":"https://api.github.com/users/dwf/orgs","repos_url":"https://api.github.com/users/dwf/repos","events_url":"https://api.github.com/users/dwf/events{/privacy}","received_events_url":"https://api.github.com/users/dwf/received_events","type":"User","site_admin":false},"created_at":"2015-11-03T02:41:17Z","updated_at":"2015-11-03T02:41:17Z","body":"Okay, and it should probably warn or flat out error if the replacement fails and your GPU graph is executing partly on CPU, since I think, the majority of the time, this is going to make a model intolerably slow."}}