|Summary:||[BDWgt3e] intermittent deqp-vk.subgroups failures|
|Product:||Mesa||Reporter:||Mark Janes <mark.a.janes>|
|Component:||Drivers/DRI/i965||Assignee:||Intel 3D Bugs Mailing List <intel-3d-bugs>|
|Status:||RESOLVED MOVED||QA Contact:||Intel 3D Bugs Mailing List <intel-3d-bugs>|
|i915 platform:||i915 features:|
Description Mark Janes 2019-02-19 22:54:35 UTC
In mesa CI, about 10% of test runs generate a single failure in the subgroups category. A quick look at the history shows the following failures: dEQP-VK.subgroups.shuffle.subgroupshuffleup_uvec2_graphic dEQP-VK.subgroups.shuffle.subgroupshuffleup_vec3_graphic dEQP-VK.subgroups.quad.subgroupquadswapdiagonal_dvec3_graphic dEQP-VK.subgroups.arithmetic.subgroupinclusivemin_uint_graphic dEQP-VK.subgroups.quad.subgroupquadbroadcast_0_bool_graphic dEQP-VK.subgroups.basic.subgroupelect_graphic dEQP-VK.subgroups.quad.subgroupquadswaphorizontal_dvec3_graphic Typical output for a failure: 1022 / 1023 values passed All tests in the recent CI history occure on GT3e systems, even though nearly half of the BDW in CI are GT2.
Comment 1 Jason Ekstrand 2019-02-20 23:43:44 UTC
Looking into this deeper, I really don't think it has anything to do with subgroups. Instead, I suspect that the issue here has something to do with SSBO stores from graphics shader stages. I dug through the bspec and couldn't find anything GT3 specific.
Comment 2 GitLab Migration User 2019-09-25 20:32:06 UTC
-- GitLab Migration Automatic Message -- This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity. You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/1791.