{"action":"closed","issue":{"url":"https://api.github.com/repos/idaholab/moose/issues/10024","repository_url":"https://api.github.com/repos/idaholab/moose","labels_url":"https://api.github.com/repos/idaholab/moose/issues/10024/labels{/name}","comments_url":"https://api.github.com/repos/idaholab/moose/issues/10024/comments","events_url":"https://api.github.com/repos/idaholab/moose/issues/10024/events","html_url":"https://github.com/idaholab/moose/issues/10024","id":262991610,"number":10024,"title":"Mesh adaptivity gets called when there are no elements to refine/coarsen","user":{"login":"jessecarterMOOSE","id":12945054,"avatar_url":"https://avatars3.githubusercontent.com/u/12945054?v=4","gravatar_id":"","url":"https://api.github.com/users/jessecarterMOOSE","html_url":"https://github.com/jessecarterMOOSE","followers_url":"https://api.github.com/users/jessecarterMOOSE/followers","following_url":"https://api.github.com/users/jessecarterMOOSE/following{/other_user}","gists_url":"https://api.github.com/users/jessecarterMOOSE/gists{/gist_id}","starred_url":"https://api.github.com/users/jessecarterMOOSE/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jessecarterMOOSE/subscriptions","organizations_url":"https://api.github.com/users/jessecarterMOOSE/orgs","repos_url":"https://api.github.com/users/jessecarterMOOSE/repos","events_url":"https://api.github.com/users/jessecarterMOOSE/events{/privacy}","received_events_url":"https://api.github.com/users/jessecarterMOOSE/received_events","type":"User","site_admin":false},"labels":[{"id":80663214,"url":"https://api.github.com/repos/idaholab/moose/labels/C:%20MOOSE","name":"C: MOOSE","color":"0052cc","default":false},{"id":80663266,"url":"https://api.github.com/repos/idaholab/moose/labels/P:%20normal","name":"P: normal","color":"ededed","default":false},{"id":80663264,"url":"https://api.github.com/repos/idaholab/moose/labels/T:%20task","name":"T: task","color":"cccccc","default":false}],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":3,"created_at":"2017-10-05T03:06:53Z","updated_at":"2017-11-15T14:56:26Z","closed_at":"2017-11-15T14:56:26Z","author_association":"CONTRIBUTOR","body":"## Rationale\r\nThe refine_and_coarsen_elements() function gets called even when there are no elements to be refined or coarsened. This causes unnecessary slowdowns, especially on large meshes across many CPU's.\r\n\r\n## Description\r\nRun a problem with mesh adaptivity on many (8+) cpus and lots (100K+) of elements and use a marker that is set to \"do_nothing\" and you'll see lots of time being spent on mesh adaptivity even though none is occurring.\r\n\r\n## Impact\r\nSkipping the mesh adaptivity call could result in significant speed ups in some cases."}}
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