[Bug 100932] [regression] GPU hangs in Sacha Willems' Multithreading Vulkan demo

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed May 17 14:21:34 UTC 2017


https://bugs.freedesktop.org/show_bug.cgi?id=100932

--- Comment #5 from Eero Tamminen <eero.t.tamminen at intel.com> ---
(In reply to Eero Tamminen from comment #0)
> Last time Sacha Willems' Multithreading Vulkan demo worked fine was with:
> -----------------------------
> b295a52836 at 2017-04-27 16:52:25 UTC
> clover: Fix build since clang r301442
> -----------------------------
> 
> Day later, at:
> -----------------------------
> 85ca563b58 at 2017-04-28 15:54:45 UTC
> anv: Drop 'x11' prefix from non-X11 WSI funcs
> -----------------------------
> 
> And after that, it seems to be GPU hanging on all GEN8+ SOC platforms: BSW,
> BXT, GLK...

Btw. the still working demos got much faster during that time frame, and that
could have exposed the issue.  E.g. compute raytracing perf doubled.

(I don't see what in the Mesa commits between these commits could explain such
a perf improvement and I don't yet have bisecting setup for Vulkan.)

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