{"action":"opened","issue":{"url":"https://api.github.com/repos/PyMVPA/PyMVPA/issues/423","repository_url":"https://api.github.com/repos/PyMVPA/PyMVPA","labels_url":"https://api.github.com/repos/PyMVPA/PyMVPA/issues/423/labels{/name}","comments_url":"https://api.github.com/repos/PyMVPA/PyMVPA/issues/423/comments","events_url":"https://api.github.com/repos/PyMVPA/PyMVPA/issues/423/events","html_url":"https://github.com/PyMVPA/PyMVPA/issues/423","id":130812946,"number":423,"title":"[WiP] Problems with GroupClusterThreshold","user":{"login":"mvdoc","id":6150554,"avatar_url":"https://avatars.githubusercontent.com/u/6150554?v=3","gravatar_id":"","url":"https://api.github.com/users/mvdoc","html_url":"https://github.com/mvdoc","followers_url":"https://api.github.com/users/mvdoc/followers","following_url":"https://api.github.com/users/mvdoc/following{/other_user}","gists_url":"https://api.github.com/users/mvdoc/gists{/gist_id}","starred_url":"https://api.github.com/users/mvdoc/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mvdoc/subscriptions","organizations_url":"https://api.github.com/users/mvdoc/orgs","repos_url":"https://api.github.com/users/mvdoc/repos","events_url":"https://api.github.com/users/mvdoc/events{/privacy}","received_events_url":"https://api.github.com/users/mvdoc/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2016-02-02T20:52:20Z","updated_at":"2016-02-02T20:52:20Z","closed_at":null,"body":"I will send a PR to fix these but just to track them down while I play with it\r\n\r\n- it seems that parallelization doesn't spread the load enough, probably because of dispatch parameters set to n_proc;\r\n- n_blocks could be obtained using n_proc (as in searchlight). atm if you set n_proc = 8 and n_blocks = 1 it doesn't get parallelized;\r\n- if for some reason (e.g., not enough permutations) none of the features pass the threshold, it fails with a division by zero error from statsmodel. Probably it shouldn't fail but just output that no clusters have been found?"}}