{"action":"created","issue":{"url":"https://api.github.com/repos/Theano/Theano/issues/4020","repository_url":"https://api.github.com/repos/Theano/Theano","labels_url":"https://api.github.com/repos/Theano/Theano/issues/4020/labels{/name}","comments_url":"https://api.github.com/repos/Theano/Theano/issues/4020/comments","events_url":"https://api.github.com/repos/Theano/Theano/issues/4020/events","html_url":"https://github.com/Theano/Theano/issues/4020","id":132426260,"number":4020,"title":"Segmentation fault (core dumped) after conv2d","user":{"login":"PaulZhutovsky","id":11158206,"avatar_url":"https://avatars.githubusercontent.com/u/11158206?v=3","gravatar_id":"","url":"https://api.github.com/users/PaulZhutovsky","html_url":"https://github.com/PaulZhutovsky","followers_url":"https://api.github.com/users/PaulZhutovsky/followers","following_url":"https://api.github.com/users/PaulZhutovsky/following{/other_user}","gists_url":"https://api.github.com/users/PaulZhutovsky/gists{/gist_id}","starred_url":"https://api.github.com/users/PaulZhutovsky/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/PaulZhutovsky/subscriptions","organizations_url":"https://api.github.com/users/PaulZhutovsky/orgs","repos_url":"https://api.github.com/users/PaulZhutovsky/repos","events_url":"https://api.github.com/users/PaulZhutovsky/events{/privacy}","received_events_url":"https://api.github.com/users/PaulZhutovsky/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":9,"created_at":"2016-02-09T14:01:13Z","updated_at":"2016-02-10T23:15:48Z","closed_at":"2016-02-10T17:44:11Z","body":"I originally opened an issue for the Lasagne library (https://github.com/Lasagne/Lasagne/issues/604) but was forwarded to Theano. Basically, I'll get a segmentation fault after performing a `conv2d` operation when using the newest Theano (and Lasagne) version. \r\nA minimal (Theano-only) example would be:\r\n\r\n```python\r\nimport numpy as np\r\nimport theano\r\nimport theano.tensor as T\r\n\r\ndata = np.random.rand(1, 3, 425, 620).astype(np.float32)\r\nW = theano.shared(np.random.rand(3, 3, 65, 65).astype(np.float32))\r\n\r\ninput_var = T.tensor4(name='input', dtype='float32')\r\n\r\nT.nnet.conv2d(input_var, W).eval({input_var: data})\r\n```\r\nOn the Lasagne tracker @ebenolson suggested that it has something to do with the switch to `abstract_conv` which appeared during Theano/Theano@51c6ef7"},"comment":{"url":"https://api.github.com/repos/Theano/Theano/issues/comments/182631205","html_url":"https://github.com/Theano/Theano/issues/4020#issuecomment-182631205","issue_url":"https://api.github.com/repos/Theano/Theano/issues/4020","id":182631205,"user":{"login":"JesseLivezey","id":2081702,"avatar_url":"https://avatars.githubusercontent.com/u/2081702?v=3","gravatar_id":"","url":"https://api.github.com/users/JesseLivezey","html_url":"https://github.com/JesseLivezey","followers_url":"https://api.github.com/users/JesseLivezey/followers","following_url":"https://api.github.com/users/JesseLivezey/following{/other_user}","gists_url":"https://api.github.com/users/JesseLivezey/gists{/gist_id}","starred_url":"https://api.github.com/users/JesseLivezey/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/JesseLivezey/subscriptions","organizations_url":"https://api.github.com/users/JesseLivezey/orgs","repos_url":"https://api.github.com/users/JesseLivezey/repos","events_url":"https://api.github.com/users/JesseLivezey/events{/privacy}","received_events_url":"https://api.github.com/users/JesseLivezey/received_events","type":"User","site_admin":false},"created_at":"2016-02-10T23:15:48Z","updated_at":"2016-02-10T23:15:48Z","body":"@f0k, haven't actually tried it yet, but I thought someone had. I can try it and see."}}