{"action":"closed","issue":{"url":"https://api.github.com/repos/ParRes/ISx/issues/6","labels_url":"https://api.github.com/repos/ParRes/ISx/issues/6/labels{/name}","comments_url":"https://api.github.com/repos/ParRes/ISx/issues/6/comments","events_url":"https://api.github.com/repos/ParRes/ISx/issues/6/events","html_url":"https://github.com/ParRes/ISx/issues/6","id":116148296,"number":6,"title":"remove Barrier before Allgather","user":{"login":"jeffhammond","id":406118,"avatar_url":"https://avatars.githubusercontent.com/u/406118?v=3","gravatar_id":"","url":"https://api.github.com/users/jeffhammond","html_url":"https://github.com/jeffhammond","followers_url":"https://api.github.com/users/jeffhammond/followers","following_url":"https://api.github.com/users/jeffhammond/following{/other_user}","gists_url":"https://api.github.com/users/jeffhammond/gists{/gist_id}","starred_url":"https://api.github.com/users/jeffhammond/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jeffhammond/subscriptions","organizations_url":"https://api.github.com/users/jeffhammond/orgs","repos_url":"https://api.github.com/users/jeffhammond/repos","events_url":"https://api.github.com/users/jeffhammond/events{/privacy}","received_events_url":"https://api.github.com/users/jeffhammond/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2015-11-10T16:46:44Z","updated_at":"2015-11-18T17:58:59Z","closed_at":"2015-11-18T17:58:59Z","body":"MPI/isx.c contains two instances of `MPI_Barrier` before `MPI_Allgather`.  `MPI_Allgather` has barrier semantics for finite count due to data dependencies and does not need this unless the MPI implementation sucks, in which case it should be a runtime option to barrier in such cases (Cray MPI already supports this via an environment variable, by the way)."}}