{"action":"opened","issue":{"url":"https://api.github.com/repos/flux-framework/flux-core/issues/1793","repository_url":"https://api.github.com/repos/flux-framework/flux-core","labels_url":"https://api.github.com/repos/flux-framework/flux-core/issues/1793/labels{/name}","comments_url":"https://api.github.com/repos/flux-framework/flux-core/issues/1793/comments","events_url":"https://api.github.com/repos/flux-framework/flux-core/issues/1793/events","html_url":"https://github.com/flux-framework/flux-core/issues/1793","id":376605989,"node_id":"MDU6SXNzdWUzNzY2MDU5ODk=","number":1793,"title":"add mechanism to launch openmpi jobs via orte as PMIx workaround","user":{"login":"garlick","id":169947,"node_id":"MDQ6VXNlcjE2OTk0Nw==","avatar_url":"https://avatars1.githubusercontent.com/u/169947?v=4","gravatar_id":"","url":"https://api.github.com/users/garlick","html_url":"https://github.com/garlick","followers_url":"https://api.github.com/users/garlick/followers","following_url":"https://api.github.com/users/garlick/following{/other_user}","gists_url":"https://api.github.com/users/garlick/gists{/gist_id}","starred_url":"https://api.github.com/users/garlick/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/garlick/subscriptions","organizations_url":"https://api.github.com/users/garlick/orgs","repos_url":"https://api.github.com/users/garlick/repos","events_url":"https://api.github.com/users/garlick/events{/privacy}","received_events_url":"https://api.github.com/users/garlick/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-11-01T23:12:59Z","updated_at":"2018-11-01T23:12:59Z","closed_at":null,"author_association":"MEMBER","body":"As discussed in #1620 for IBM spectrum MPI, there is a movement in OpenMPI land of dropping 'legacy' RM interfaces and supporting only PMIx.  We hit it first with PAMI, the accelerated collectives in spectrum MPI, which separately create a PMIx session (within the same rank as `MPI_Init()`.\r\n\r\nYet implementing PMIx in flux is not likely to happen real soon given other priorities.\r\n\r\nA potential workaround is to add an option to start orte daemons to supply PMIx to the job, sort of like how slurm used to run openmpi jobs years ago.\r\n\r\n"}}
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