{"action":"created","issue":{"url":"https://api.github.com/repos/numpy/numpy/issues/5586","labels_url":"https://api.github.com/repos/numpy/numpy/issues/5586/labels{/name}","comments_url":"https://api.github.com/repos/numpy/numpy/issues/5586/comments","events_url":"https://api.github.com/repos/numpy/numpy/issues/5586/events","html_url":"https://github.com/numpy/numpy/issues/5586","id":58230834,"number":5586,"title":"Integer arithmetic doesn't use SIMD","user":{"login":"d1manson","id":4244876,"avatar_url":"https://avatars.githubusercontent.com/u/4244876?v=3","gravatar_id":"","url":"https://api.github.com/users/d1manson","html_url":"https://github.com/d1manson","followers_url":"https://api.github.com/users/d1manson/followers","following_url":"https://api.github.com/users/d1manson/following{/other_user}","gists_url":"https://api.github.com/users/d1manson/gists{/gist_id}","starred_url":"https://api.github.com/users/d1manson/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/d1manson/subscriptions","organizations_url":"https://api.github.com/users/d1manson/orgs","repos_url":"https://api.github.com/users/d1manson/repos","events_url":"https://api.github.com/users/d1manson/events{/privacy}","received_events_url":"https://api.github.com/users/d1manson/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2015-02-19T16:24:55Z","updated_at":"2015-02-19T20:08:02Z","closed_at":null,"body":"See [this SO question](http://stackoverflow.com/q/28592415/2399799).\r\n\r\nAddition of two integer arrays should be using SIMD, as should all other ufunc(ish) integer functions.  Currently all integer arithmetic takes roughly 3-5 times longer than 32-bit float operations. \r\n\r\nIn the most extreme example, for the case of 8bit integers, this means there is probably a 12-20 times potential speedup not being used, which is a real shame.\r\n\r\n"},"comment":{"url":"https://api.github.com/repos/numpy/numpy/issues/comments/75126011","html_url":"https://github.com/numpy/numpy/issues/5586#issuecomment-75126011","issue_url":"https://api.github.com/repos/numpy/numpy/issues/5586","id":75126011,"user":{"login":"juliantaylor","id":542663,"avatar_url":"https://avatars.githubusercontent.com/u/542663?v=3","gravatar_id":"","url":"https://api.github.com/users/juliantaylor","html_url":"https://github.com/juliantaylor","followers_url":"https://api.github.com/users/juliantaylor/followers","following_url":"https://api.github.com/users/juliantaylor/following{/other_user}","gists_url":"https://api.github.com/users/juliantaylor/gists{/gist_id}","starred_url":"https://api.github.com/users/juliantaylor/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/juliantaylor/subscriptions","organizations_url":"https://api.github.com/users/juliantaylor/orgs","repos_url":"https://api.github.com/users/juliantaylor/repos","events_url":"https://api.github.com/users/juliantaylor/events{/privacy}","received_events_url":"https://api.github.com/users/juliantaylor/received_events","type":"User","site_admin":false},"created_at":"2015-02-19T20:08:02Z","updated_at":"2015-02-19T20:08:02Z","body":"they are using simd in 1.10,but unlike floats only if the compiler is able to vectorize it.\r\nmanually vectorizing integer operation is quite annoying"}}