{"action":"created","issue":{"url":"https://api.github.com/repos/dmlc/minpy/issues/170","repository_url":"https://api.github.com/repos/dmlc/minpy","labels_url":"https://api.github.com/repos/dmlc/minpy/issues/170/labels{/name}","comments_url":"https://api.github.com/repos/dmlc/minpy/issues/170/comments","events_url":"https://api.github.com/repos/dmlc/minpy/issues/170/events","html_url":"https://github.com/dmlc/minpy/issues/170","id":220837311,"number":170,"title":"minpy.core.Function handling top-down gradients w.r.t. multiple outputs","user":{"login":"GaiYu0","id":17979843,"avatar_url":"https://avatars2.githubusercontent.com/u/17979843?v=3","gravatar_id":"","url":"https://api.github.com/users/GaiYu0","html_url":"https://github.com/GaiYu0","followers_url":"https://api.github.com/users/GaiYu0/followers","following_url":"https://api.github.com/users/GaiYu0/following{/other_user}","gists_url":"https://api.github.com/users/GaiYu0/gists{/gist_id}","starred_url":"https://api.github.com/users/GaiYu0/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/GaiYu0/subscriptions","organizations_url":"https://api.github.com/users/GaiYu0/orgs","repos_url":"https://api.github.com/users/GaiYu0/repos","events_url":"https://api.github.com/users/GaiYu0/events{/privacy}","received_events_url":"https://api.github.com/users/GaiYu0/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":2,"created_at":"2017-04-11T04:35:23Z","updated_at":"2017-05-25T22:12:31Z","closed_at":"2017-05-25T22:12:31Z","body":"Hi! I am using `minpy.core.Function` to call a MXNet symbol yielding multiple outputs. I am not sure whether `minpy.core.Function` works in backward phase if there are top-down gradients w.r.t. all these outputs. \r\n\r\nIt appears that `minpy.core.Function` only provides gradient w.r.t. one of these outputs to executor.backward: https://github.com/dmlc/minpy/blob/master/minpy/core.py#L169\r\n\r\n(But I might be wrong)"},"comment":{"url":"https://api.github.com/repos/dmlc/minpy/issues/comments/304138723","html_url":"https://github.com/dmlc/minpy/issues/170#issuecomment-304138723","issue_url":"https://api.github.com/repos/dmlc/minpy/issues/170","id":304138723,"user":{"login":"GaiYu0","id":17979843,"avatar_url":"https://avatars2.githubusercontent.com/u/17979843?v=3","gravatar_id":"","url":"https://api.github.com/users/GaiYu0","html_url":"https://github.com/GaiYu0","followers_url":"https://api.github.com/users/GaiYu0/followers","following_url":"https://api.github.com/users/GaiYu0/following{/other_user}","gists_url":"https://api.github.com/users/GaiYu0/gists{/gist_id}","starred_url":"https://api.github.com/users/GaiYu0/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/GaiYu0/subscriptions","organizations_url":"https://api.github.com/users/GaiYu0/orgs","repos_url":"https://api.github.com/users/GaiYu0/repos","events_url":"https://api.github.com/users/GaiYu0/events{/privacy}","received_events_url":"https://api.github.com/users/GaiYu0/received_events","type":"User","site_admin":false},"created_at":"2017-05-25T22:12:31Z","updated_at":"2017-05-25T22:12:31Z","body":"I agree. Let me close the issue."}}
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