{"action":"created","issue":{"url":"https://api.github.com/repos/gap-system/gap/issues/798","repository_url":"https://api.github.com/repos/gap-system/gap","labels_url":"https://api.github.com/repos/gap-system/gap/issues/798/labels{/name}","comments_url":"https://api.github.com/repos/gap-system/gap/issues/798/comments","events_url":"https://api.github.com/repos/gap-system/gap/issues/798/events","html_url":"https://github.com/gap-system/gap/issues/798","id":156242246,"number":798,"title":"Regression in ConstructAllGroups(2916) between `stable-4.8` and `master`","user":{"login":"markuspf","id":3589190,"avatar_url":"https://avatars.githubusercontent.com/u/3589190?v=3","gravatar_id":"","url":"https://api.github.com/users/markuspf","html_url":"https://github.com/markuspf","followers_url":"https://api.github.com/users/markuspf/followers","following_url":"https://api.github.com/users/markuspf/following{/other_user}","gists_url":"https://api.github.com/users/markuspf/gists{/gist_id}","starred_url":"https://api.github.com/users/markuspf/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/markuspf/subscriptions","organizations_url":"https://api.github.com/users/markuspf/orgs","repos_url":"https://api.github.com/users/markuspf/repos","events_url":"https://api.github.com/users/markuspf/events{/privacy}","received_events_url":"https://api.github.com/users/markuspf/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/gap-system/gap/labels/bug","name":"bug","color":"e11d21"},{"url":"https://api.github.com/repos/gap-system/gap/labels/regression","name":"regression","color":"eb6420"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":11,"created_at":"2016-05-23T09:54:50Z","updated_at":"2016-05-30T21:32:26Z","closed_at":null,"body":"### Observed behaviour\r\n```\r\ngap> ConstructAllGroups(2916);\r\n```\r\nDid not return a result in 3 days on `master`, finishes in about `4000` seconds on `stable-4.8` on the same hardware.\r\n\r\n### Expected behaviour\r\n\r\nSlightly more similar runtimes.\r\n\r\n### Copy and paste GAP banner (to tell us about your setup)\r\n\r\n```\r\n ┌───────┐   GAP v4.8.1-60-g7fb6cc3 of 2016-01-15 11:05:44 (UTC)\r\n │  GAP  │   http://www.gap-system.org\r\n └───────┘   Architecture: x86_64-pc-linux-gnu-gcc-default64\r\n Libs used:  gmp, readline\r\n Loading the library and packages ...\r\n Components: trans 1.0, prim 2.1, small* 1.0, id* 1.0\r\n Packages:   AClib 1.2, Alnuth 3.0.0, AtlasRep 1.5.0, AutPGrp 1.6, CRISP 1.4.3, \r\n             Cryst 4.1.12, CrystCat 1.1.6, CTblLib 1.2.2, FactInt 1.5.3, \r\n             FGA 1.3.1, GAPDoc 1.5.1, IRREDSOL 1.2.4, LAGUNA 3.7.0, Polenta 1.3.6, \r\n             Polycyclic 2.11, RadiRoot 2.7, ResClasses 4.4.2, Sophus 1.23, \r\n             SpinSym 1.5, TomLib 1.2.5, Utils 0.39\r\n```\r\n\r\n###\r\n\r\nIs this maybe to do with the changes to group homomorphisms?"},"comment":{"url":"https://api.github.com/repos/gap-system/gap/issues/comments/222556935","html_url":"https://github.com/gap-system/gap/issues/798#issuecomment-222556935","issue_url":"https://api.github.com/repos/gap-system/gap/issues/798","id":222556935,"user":{"login":"markuspf","id":3589190,"avatar_url":"https://avatars.githubusercontent.com/u/3589190?v=3","gravatar_id":"","url":"https://api.github.com/users/markuspf","html_url":"https://github.com/markuspf","followers_url":"https://api.github.com/users/markuspf/followers","following_url":"https://api.github.com/users/markuspf/following{/other_user}","gists_url":"https://api.github.com/users/markuspf/gists{/gist_id}","starred_url":"https://api.github.com/users/markuspf/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/markuspf/subscriptions","organizations_url":"https://api.github.com/users/markuspf/orgs","repos_url":"https://api.github.com/users/markuspf/repos","events_url":"https://api.github.com/users/markuspf/events{/privacy}","received_events_url":"https://api.github.com/users/markuspf/received_events","type":"User","site_admin":false},"created_at":"2016-05-30T21:32:26Z","updated_at":"2016-05-30T21:32:26Z","body":"Thanks for catching this @ChrisJefferson. I am just now rerunning the computation to find whether the regression is gone."}}
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