{"action":"created","issue":{"url":"https://api.github.com/repos/open-mpi/ompi/issues/1576","repository_url":"https://api.github.com/repos/open-mpi/ompi","labels_url":"https://api.github.com/repos/open-mpi/ompi/issues/1576/labels{/name}","comments_url":"https://api.github.com/repos/open-mpi/ompi/issues/1576/comments","events_url":"https://api.github.com/repos/open-mpi/ompi/issues/1576/events","html_url":"https://github.com/open-mpi/ompi/issues/1576","id":150862642,"number":1576,"title":"Barrier in MPI_Finalize","user":{"login":"nysal","id":8509287,"avatar_url":"https://avatars.githubusercontent.com/u/8509287?v=3","gravatar_id":"","url":"https://api.github.com/users/nysal","html_url":"https://github.com/nysal","followers_url":"https://api.github.com/users/nysal/followers","following_url":"https://api.github.com/users/nysal/following{/other_user}","gists_url":"https://api.github.com/users/nysal/gists{/gist_id}","starred_url":"https://api.github.com/users/nysal/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nysal/subscriptions","organizations_url":"https://api.github.com/users/nysal/orgs","repos_url":"https://api.github.com/users/nysal/repos","events_url":"https://api.github.com/users/nysal/events{/privacy}","received_events_url":"https://api.github.com/users/nysal/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/open-mpi/ompi/labels/bug","name":"bug","color":"fc2929"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":6,"created_at":"2016-04-25T13:40:30Z","updated_at":"2016-04-25T15:41:25Z","closed_at":null,"body":"I had posted this a while back in the devel mailing list - https://www.open-mpi.org/community/lists/devel/2015/10/18145.php\r\n\r\nThis issue can be easily reproduced in both master and v2.x using the ibm/random/ticket-1944-test4.c test case. Just reduce the sm BTL's fifo size:\r\n```\r\n$ /u/jnysal/ompi-idbg-v2.x-test/bin/mpirun  -np 4 --mca pml ob1 --mca btl self,sm --mca btl_sm_fifo_size 512 ticket-1944-test4\r\n1 finish send\r\n0 start recv\r\n0 finish recv\r\n<hang>\r\n```\r\nAs expected adding an MPI_Barrier before MPI_Finalize in the test case fixes the issue. The pmix fence does not progress MPI. "},"comment":{"url":"https://api.github.com/repos/open-mpi/ompi/issues/comments/214402668","html_url":"https://github.com/open-mpi/ompi/issues/1576#issuecomment-214402668","issue_url":"https://api.github.com/repos/open-mpi/ompi/issues/1576","id":214402668,"user":{"login":"nysal","id":8509287,"avatar_url":"https://avatars.githubusercontent.com/u/8509287?v=3","gravatar_id":"","url":"https://api.github.com/users/nysal","html_url":"https://github.com/nysal","followers_url":"https://api.github.com/users/nysal/followers","following_url":"https://api.github.com/users/nysal/following{/other_user}","gists_url":"https://api.github.com/users/nysal/gists{/gist_id}","starred_url":"https://api.github.com/users/nysal/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nysal/subscriptions","organizations_url":"https://api.github.com/users/nysal/orgs","repos_url":"https://api.github.com/users/nysal/repos","events_url":"https://api.github.com/users/nysal/events{/privacy}","received_events_url":"https://api.github.com/users/nysal/received_events","type":"User","site_admin":false},"created_at":"2016-04-25T15:41:25Z","updated_at":"2016-04-25T15:41:25Z","body":"@rhc54 Thanks, that fixes the issue for me"}}