{"action":"created","issue":{"url":"https://api.github.com/repos/JuliaLang/julia/issues/10387","labels_url":"https://api.github.com/repos/JuliaLang/julia/issues/10387/labels{/name}","comments_url":"https://api.github.com/repos/JuliaLang/julia/issues/10387/comments","events_url":"https://api.github.com/repos/JuliaLang/julia/issues/10387/events","html_url":"https://github.com/JuliaLang/julia/issues/10387","id":59620569,"number":10387,"title":"Segment Fault when using svds with OpenBLAS on Nehalem kernels","user":{"login":"toddleo","id":2659118,"avatar_url":"https://avatars.githubusercontent.com/u/2659118?v=3","gravatar_id":"","url":"https://api.github.com/users/toddleo","html_url":"https://github.com/toddleo","followers_url":"https://api.github.com/users/toddleo/followers","following_url":"https://api.github.com/users/toddleo/following{/other_user}","gists_url":"https://api.github.com/users/toddleo/gists{/gist_id}","starred_url":"https://api.github.com/users/toddleo/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/toddleo/subscriptions","organizations_url":"https://api.github.com/users/toddleo/orgs","repos_url":"https://api.github.com/users/toddleo/repos","events_url":"https://api.github.com/users/toddleo/events{/privacy}","received_events_url":"https://api.github.com/users/toddleo/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/JuliaLang/julia/labels/bug","name":"bug","color":"e10c02"},{"url":"https://api.github.com/repos/JuliaLang/julia/labels/linear%20algebra","name":"linear algebra","color":"aa8800"},{"url":"https://api.github.com/repos/JuliaLang/julia/labels/upstream","name":"upstream","color":"bbbbbb"}],"state":"open","locked":false,"assignee":null,"milestone":{"url":"https://api.github.com/repos/JuliaLang/julia/milestones/11","html_url":"https://github.com/JuliaLang/julia/milestones/0.4.0","labels_url":"https://api.github.com/repos/JuliaLang/julia/milestones/11/labels","id":748886,"number":11,"title":"0.4.0","description":"For tracking release-defining items for 0.4: important new features, breaking changes, and blocking bugs.\r\n\r\nAfter a brief period for deciding scope, adding issues to this milestone is not allowed. Once the items in this milestone are done, 0.4 will enter its stabilizing period and a release candidate can be made soon after.","creator":{"login":"JeffBezanson","id":744556,"avatar_url":"https://avatars.githubusercontent.com/u/744556?v=3","gravatar_id":"","url":"https://api.github.com/users/JeffBezanson","html_url":"https://github.com/JeffBezanson","followers_url":"https://api.github.com/users/JeffBezanson/followers","following_url":"https://api.github.com/users/JeffBezanson/following{/other_user}","gists_url":"https://api.github.com/users/JeffBezanson/gists{/gist_id}","starred_url":"https://api.github.com/users/JeffBezanson/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/JeffBezanson/subscriptions","organizations_url":"https://api.github.com/users/JeffBezanson/orgs","repos_url":"https://api.github.com/users/JeffBezanson/repos","events_url":"https://api.github.com/users/JeffBezanson/events{/privacy}","received_events_url":"https://api.github.com/users/JeffBezanson/received_events","type":"User","site_admin":false},"open_issues":28,"closed_issues":30,"state":"open","created_at":"2014-08-10T18:13:46Z","updated_at":"2015-04-16T09:13:24Z","due_on":"2015-06-20T18:30:00Z","closed_at":null},"comments":14,"created_at":"2015-03-03T10:12:25Z","updated_at":"2015-04-16T20:22:51Z","closed_at":null,"body":"I am running julia nightlies in a virtual machine in the cloud, which seems not support AVX, and OpenBLAS fallbacks to Nehalem kernels. But when I tried to apply svds on a sparse matrix(considerably large, around 6,000,000 x 2,600), Segment fault returned in seconds:\r\n\r\n> signal (11): Segmentation fault\r\n> dgemv_t_NEHALEM at /usr/lib/libopenblas.so.0 (unknown line)\r\n> Segmentation fault\r\n\r\nand sadly, this error raises every time. However, svds runs successfully on smaller sparse matrices(500x500). Is my previous matrix too large for svds/OpenBLAS?\r\n\r\nShould I also CC @xianyi ?"},"comment":{"url":"https://api.github.com/repos/JuliaLang/julia/issues/comments/93831206","html_url":"https://github.com/JuliaLang/julia/issues/10387#issuecomment-93831206","issue_url":"https://api.github.com/repos/JuliaLang/julia/issues/10387","id":93831206,"user":{"login":"vtjnash","id":330950,"avatar_url":"https://avatars.githubusercontent.com/u/330950?v=3","gravatar_id":"","url":"https://api.github.com/users/vtjnash","html_url":"https://github.com/vtjnash","followers_url":"https://api.github.com/users/vtjnash/followers","following_url":"https://api.github.com/users/vtjnash/following{/other_user}","gists_url":"https://api.github.com/users/vtjnash/gists{/gist_id}","starred_url":"https://api.github.com/users/vtjnash/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/vtjnash/subscriptions","organizations_url":"https://api.github.com/users/vtjnash/orgs","repos_url":"https://api.github.com/users/vtjnash/repos","events_url":"https://api.github.com/users/vtjnash/events{/privacy}","received_events_url":"https://api.github.com/users/vtjnash/received_events","type":"User","site_admin":false},"created_at":"2015-04-16T20:22:51Z","updated_at":"2015-04-16T20:22:51Z","body":"What does `cat /proc/cpuinfo` return? I'm also having trouble reproducing, sadly."}}