{"action":"closed","issue":{"url":"https://api.github.com/repos/circlingthesun/test/issues/67","labels_url":"https://api.github.com/repos/circlingthesun/test/issues/67/labels{/name}","comments_url":"https://api.github.com/repos/circlingthesun/test/issues/67/comments","events_url":"https://api.github.com/repos/circlingthesun/test/issues/67/events","html_url":"https://github.com/circlingthesun/test/issues/67","id":83427800,"number":67,"title":"Tune work-group sizes","user":{"login":"circlingthesun","id":1028632,"avatar_url":"https://avatars.githubusercontent.com/u/1028632?v=3","gravatar_id":"","url":"https://api.github.com/users/circlingthesun","html_url":"https://github.com/circlingthesun","followers_url":"https://api.github.com/users/circlingthesun/followers","following_url":"https://api.github.com/users/circlingthesun/following{/other_user}","gists_url":"https://api.github.com/users/circlingthesun/gists{/gist_id}","starred_url":"https://api.github.com/users/circlingthesun/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/circlingthesun/subscriptions","organizations_url":"https://api.github.com/users/circlingthesun/orgs","repos_url":"https://api.github.com/users/circlingthesun/repos","events_url":"https://api.github.com/users/circlingthesun/events{/privacy}","received_events_url":"https://api.github.com/users/circlingthesun/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/circlingthesun/test/labels/Synthesis","name":"Synthesis","color":"ededed"}],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-06-01T10:35:48Z","updated_at":"2015-06-01T10:35:49Z","closed_at":"2015-06-01T10:35:49Z","body":"Currently it's just 16x16 for the 2D case. Apart from tuning to maximize use of registers, local memory etc, it may be worth using 32-wide work-groups so that each warp performs contiguous memory accesses."}}