{"action":"created","issue":{"url":"https://api.github.com/repos/xianyi/OpenBLAS/issues/597","labels_url":"https://api.github.com/repos/xianyi/OpenBLAS/issues/597/labels{/name}","comments_url":"https://api.github.com/repos/xianyi/OpenBLAS/issues/597/comments","events_url":"https://api.github.com/repos/xianyi/OpenBLAS/issues/597/events","html_url":"https://github.com/xianyi/OpenBLAS/issues/597","id":88429093,"number":597,"title":"OpenBLAS/lapack-netlib 'make' numerical errors in ARMv7 multi-threaded only","user":{"login":"Jagmn","id":12895953,"avatar_url":"https://avatars.githubusercontent.com/u/12895953?v=3","gravatar_id":"","url":"https://api.github.com/users/Jagmn","html_url":"https://github.com/Jagmn","followers_url":"https://api.github.com/users/Jagmn/followers","following_url":"https://api.github.com/users/Jagmn/following{/other_user}","gists_url":"https://api.github.com/users/Jagmn/gists{/gist_id}","starred_url":"https://api.github.com/users/Jagmn/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Jagmn/subscriptions","organizations_url":"https://api.github.com/users/Jagmn/orgs","repos_url":"https://api.github.com/users/Jagmn/repos","events_url":"https://api.github.com/users/Jagmn/events{/privacy}","received_events_url":"https://api.github.com/users/Jagmn/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":2,"created_at":"2015-06-15T13:36:10Z","updated_at":"2015-06-15T20:33:21Z","closed_at":null,"body":"When running a 'make' in the 'lapack-netlib' directory of OpenBLAS on an ARMv7 target, I get different numerical failures  when using multi-threading.\r\n```\r\n--- ARMv7 (Raspberry Pi 2) x 4 (no OpenMP), built with 'make TARGET=ARMV7'\r\n\t\t\t-->   LAPACK TESTING SUMMARY  <--\r\n\t\tProcessing LAPACK Testing output found in the TESTING direcory\r\nSUMMARY             \tnb test run \tnumerical error   \tother error  \r\n================   \t===========\t=================\t================  \r\nREAL             \t528599\t\t11\t(0.002%)\t0\t(0.000%)\t\r\nDOUBLE PRECISION\t605768\t\t1\t(0.000%)\t0\t(0.000%)\t\r\nCOMPLEX          \t434073\t\t114\t(0.026%)\t0\t(0.000%)\t\r\nCOMPLEX16         \t522687\t\t70\t(0.013%)\t0\t(0.000%)\t\r\n\r\n--> ALL PRECISIONS\t2091127\t\t196\t(0.009%)\t0\t(0.000%)\t\r\n\r\n\r\n--- ARMv7 (Raspberry Pi 2) x 4 (no OpenMP), OPENBLAS_NUM_THREADS=1 \r\n\t\t\t-->   LAPACK TESTING SUMMARY  <--\r\n\t\tProcessing LAPACK Testing output found in the TESTING direcory\r\nSUMMARY             \tnb test run \tnumerical error   \tother error  \r\n================   \t===========\t=================\t================  \r\nREAL             \t1109189\t\t0\t(0.000%)\t0\t(0.000%)\t\r\nDOUBLE PRECISION\t1110527\t\t0\t(0.000%)\t0\t(0.000%)\t\r\nCOMPLEX          \t581782\t\t0\t(0.000%)\t0\t(0.000%)\t\r\nCOMPLEX16         \t582594\t\t0\t(0.000%)\t0\t(0.000%)\t\r\n\r\n--> ALL PRECISIONS\t3384092\t\t0\t(0.000%)\t0\t(0.000%)\t\r\n```\r\n\r\n\r\n\r\n<bountysource-plugin>\r\n---\r\nWant to back this issue? **[Post a bounty on it!](https://www.bountysource.com/issues/22113529-openblas-lapack-netlib-make-numerical-errors-in-armv7-multi-threaded-only?utm_campaign=plugin&utm_content=tracker%2F69691&utm_medium=issues&utm_source=github)** We accept bounties via [Bountysource](https://www.bountysource.com/?utm_campaign=plugin&utm_content=tracker%2F69691&utm_medium=issues&utm_source=github).\r\n</bountysource-plugin>"},"comment":{"url":"https://api.github.com/repos/xianyi/OpenBLAS/issues/comments/112200155","html_url":"https://github.com/xianyi/OpenBLAS/issues/597#issuecomment-112200155","issue_url":"https://api.github.com/repos/xianyi/OpenBLAS/issues/597","id":112200155,"user":{"login":"martin-frbg","id":6192365,"avatar_url":"https://avatars.githubusercontent.com/u/6192365?v=3","gravatar_id":"","url":"https://api.github.com/users/martin-frbg","html_url":"https://github.com/martin-frbg","followers_url":"https://api.github.com/users/martin-frbg/followers","following_url":"https://api.github.com/users/martin-frbg/following{/other_user}","gists_url":"https://api.github.com/users/martin-frbg/gists{/gist_id}","starred_url":"https://api.github.com/users/martin-frbg/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/martin-frbg/subscriptions","organizations_url":"https://api.github.com/users/martin-frbg/orgs","repos_url":"https://api.github.com/users/martin-frbg/repos","events_url":"https://api.github.com/users/martin-frbg/events{/privacy}","received_events_url":"https://api.github.com/users/martin-frbg/received_events","type":"User","site_admin":false},"created_at":"2015-06-15T20:33:21Z","updated_at":"2015-06-15T20:33:21Z","body":"Is this with the 0.2.14 release or current git \"develop\" branch ? (If the former, could you retest with the latter just in case ?) "}}