{"action":"created","issue":{"url":"https://api.github.com/repos/Theano/libgpuarray/issues/192","repository_url":"https://api.github.com/repos/Theano/libgpuarray","labels_url":"https://api.github.com/repos/Theano/libgpuarray/issues/192/labels{/name}","comments_url":"https://api.github.com/repos/Theano/libgpuarray/issues/192/comments","events_url":"https://api.github.com/repos/Theano/libgpuarray/issues/192/events","html_url":"https://github.com/Theano/libgpuarray/pull/192","id":159265479,"number":192,"title":"Add a shortcut to cuda_waits() in case we are on the same stream.","user":{"login":"abergeron","id":1002504,"avatar_url":"https://avatars.githubusercontent.com/u/1002504?v=3","gravatar_id":"","url":"https://api.github.com/users/abergeron","html_url":"https://github.com/abergeron","followers_url":"https://api.github.com/users/abergeron/followers","following_url":"https://api.github.com/users/abergeron/following{/other_user}","gists_url":"https://api.github.com/users/abergeron/gists{/gist_id}","starred_url":"https://api.github.com/users/abergeron/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/abergeron/subscriptions","organizations_url":"https://api.github.com/users/abergeron/orgs","repos_url":"https://api.github.com/users/abergeron/repos","events_url":"https://api.github.com/users/abergeron/events{/privacy}","received_events_url":"https://api.github.com/users/abergeron/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":5,"created_at":"2016-06-08T20:39:51Z","updated_at":"2016-06-10T20:28:15Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/Theano/libgpuarray/pulls/192","html_url":"https://github.com/Theano/libgpuarray/pull/192","diff_url":"https://github.com/Theano/libgpuarray/pull/192.diff","patch_url":"https://github.com/Theano/libgpuarray/pull/192.patch"},"body":"This helps lower the overhead of cuda_wait() for the single-stream case."},"comment":{"url":"https://api.github.com/repos/Theano/libgpuarray/issues/comments/225287194","html_url":"https://github.com/Theano/libgpuarray/pull/192#issuecomment-225287194","issue_url":"https://api.github.com/repos/Theano/libgpuarray/issues/192","id":225287194,"user":{"login":"abergeron","id":1002504,"avatar_url":"https://avatars.githubusercontent.com/u/1002504?v=3","gravatar_id":"","url":"https://api.github.com/users/abergeron","html_url":"https://github.com/abergeron","followers_url":"https://api.github.com/users/abergeron/followers","following_url":"https://api.github.com/users/abergeron/following{/other_user}","gists_url":"https://api.github.com/users/abergeron/gists{/gist_id}","starred_url":"https://api.github.com/users/abergeron/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/abergeron/subscriptions","organizations_url":"https://api.github.com/users/abergeron/orgs","repos_url":"https://api.github.com/users/abergeron/repos","events_url":"https://api.github.com/users/abergeron/events{/privacy}","received_events_url":"https://api.github.com/users/abergeron/received_events","type":"User","site_admin":false},"created_at":"2016-06-10T20:28:15Z","updated_at":"2016-06-10T20:28:15Z","body":"In single-stream mode no.  There is a speedup actually.  But a profiling run shows that GpuCAReduce, GpuAdvancedSubtensor1 and GpuAdvancedSubtensor1_dev20 still have some slowdown and the amount of GpuElemwise node is not the same (which does lead to GpuElemwise taking more total time on the new backend).\r\n\r\nI don't think we should wait on a PR to Theano simply because this does not introduce any backwards incompatibilities."}}
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