{"action":"created","issue":{"url":"https://api.github.com/repos/dmlc/mxnet/issues/1092","labels_url":"https://api.github.com/repos/dmlc/mxnet/issues/1092/labels{/name}","comments_url":"https://api.github.com/repos/dmlc/mxnet/issues/1092/comments","events_url":"https://api.github.com/repos/dmlc/mxnet/issues/1092/events","html_url":"https://github.com/dmlc/mxnet/issues/1092","id":124057163,"number":1092,"title":"accuracy  of train_mnist.py are different on single gpu and multi-gpus ","user":{"login":"chenjx1005","id":3807357,"avatar_url":"https://avatars.githubusercontent.com/u/3807357?v=3","gravatar_id":"","url":"https://api.github.com/users/chenjx1005","html_url":"https://github.com/chenjx1005","followers_url":"https://api.github.com/users/chenjx1005/followers","following_url":"https://api.github.com/users/chenjx1005/following{/other_user}","gists_url":"https://api.github.com/users/chenjx1005/gists{/gist_id}","starred_url":"https://api.github.com/users/chenjx1005/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/chenjx1005/subscriptions","organizations_url":"https://api.github.com/users/chenjx1005/orgs","repos_url":"https://api.github.com/users/chenjx1005/repos","events_url":"https://api.github.com/users/chenjx1005/events{/privacy}","received_events_url":"https://api.github.com/users/chenjx1005/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2015-12-28T11:53:29Z","updated_at":"2015-12-28T14:17:42Z","closed_at":null,"body":"I run the examples/image_classification/train_mnist.py on single gpu and double gpus. what out of my expectation is that accuracies are slightly different.(around 0.1% different). though it is not a big issue but still i am very confused because they should be completely equal in theory. can you explain what cause this slight difference? thank u!"},"comment":{"url":"https://api.github.com/repos/dmlc/mxnet/issues/comments/167578937","html_url":"https://github.com/dmlc/mxnet/issues/1092#issuecomment-167578937","issue_url":"https://api.github.com/repos/dmlc/mxnet/issues/1092","id":167578937,"user":{"login":"qiaohaijun","id":1198833,"avatar_url":"https://avatars.githubusercontent.com/u/1198833?v=3","gravatar_id":"","url":"https://api.github.com/users/qiaohaijun","html_url":"https://github.com/qiaohaijun","followers_url":"https://api.github.com/users/qiaohaijun/followers","following_url":"https://api.github.com/users/qiaohaijun/following{/other_user}","gists_url":"https://api.github.com/users/qiaohaijun/gists{/gist_id}","starred_url":"https://api.github.com/users/qiaohaijun/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/qiaohaijun/subscriptions","organizations_url":"https://api.github.com/users/qiaohaijun/orgs","repos_url":"https://api.github.com/users/qiaohaijun/repos","events_url":"https://api.github.com/users/qiaohaijun/events{/privacy}","received_events_url":"https://api.github.com/users/qiaohaijun/received_events","type":"User","site_admin":false},"created_at":"2015-12-28T14:17:42Z","updated_at":"2015-12-28T14:17:42Z","body":"why you think they should be equal in theory?"}}