{"action":"created","issue":{"url":"https://api.github.com/repos/dealii/dealii/issues/6221","repository_url":"https://api.github.com/repos/dealii/dealii","labels_url":"https://api.github.com/repos/dealii/dealii/issues/6221/labels{/name}","comments_url":"https://api.github.com/repos/dealii/dealii/issues/6221/comments","events_url":"https://api.github.com/repos/dealii/dealii/issues/6221/events","html_url":"https://github.com/dealii/dealii/pull/6221","id":313115647,"number":6221,"title":" Store the pressure mass matrix separately in step-22","user":{"login":"masterleinad","id":2423533,"avatar_url":"https://avatars0.githubusercontent.com/u/2423533?v=4","gravatar_id":"","url":"https://api.github.com/users/masterleinad","html_url":"https://github.com/masterleinad","followers_url":"https://api.github.com/users/masterleinad/followers","following_url":"https://api.github.com/users/masterleinad/following{/other_user}","gists_url":"https://api.github.com/users/masterleinad/gists{/gist_id}","starred_url":"https://api.github.com/users/masterleinad/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/masterleinad/subscriptions","organizations_url":"https://api.github.com/users/masterleinad/orgs","repos_url":"https://api.github.com/users/masterleinad/repos","events_url":"https://api.github.com/users/masterleinad/events{/privacy}","received_events_url":"https://api.github.com/users/masterleinad/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":1,"created_at":"2018-04-10T22:47:57Z","updated_at":"2018-04-11T15:32:22Z","closed_at":null,"author_association":"MEMBER","pull_request":{"url":"https://api.github.com/repos/dealii/dealii/pulls/6221","html_url":"https://github.com/dealii/dealii/pull/6221","diff_url":"https://github.com/dealii/dealii/pull/6221.diff","patch_url":"https://github.com/dealii/dealii/pull/6221.patch"},"body":"Fixes #6058 by storing the pressure mass matrix in a separate object."},"comment":{"url":"https://api.github.com/repos/dealii/dealii/issues/comments/380495690","html_url":"https://github.com/dealii/dealii/pull/6221#issuecomment-380495690","issue_url":"https://api.github.com/repos/dealii/dealii/issues/6221","id":380495690,"user":{"login":"masterleinad","id":2423533,"avatar_url":"https://avatars0.githubusercontent.com/u/2423533?v=4","gravatar_id":"","url":"https://api.github.com/users/masterleinad","html_url":"https://github.com/masterleinad","followers_url":"https://api.github.com/users/masterleinad/followers","following_url":"https://api.github.com/users/masterleinad/following{/other_user}","gists_url":"https://api.github.com/users/masterleinad/gists{/gist_id}","starred_url":"https://api.github.com/users/masterleinad/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/masterleinad/subscriptions","organizations_url":"https://api.github.com/users/masterleinad/orgs","repos_url":"https://api.github.com/users/masterleinad/repos","events_url":"https://api.github.com/users/masterleinad/events{/privacy}","received_events_url":"https://api.github.com/users/masterleinad/received_events","type":"User","site_admin":false},"created_at":"2018-04-11T15:32:22Z","updated_at":"2018-04-11T15:32:22Z","author_association":"MEMBER","body":"> The way you do it by copying the data out and then zeroing out the block leads to the wrong matrix in the bottom right if you have constraints on the pressure (hanging nodes, for example).\r\n\r\nWe do have hanging node constraints in the example and I obtain the same iteration counts. Actually, I would be really surprised if this would not be the case. In the end, I just copy the same matrix to a different place. So why should the behavior be different?\r\nAnyway, I am also fine with just assembling an additional object. Conceptionally, it's a bit unfortunate that we also have to deal with a whole block matrix though.\r\n"}}
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