<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [SKL] Unigine Heaven 4.0 fails to GPU hangs" href="https://bugs.freedesktop.org/show_bug.cgi?id=103556#c31">Comment # 31</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [SKL] Unigine Heaven 4.0 fails to GPU hangs" href="https://bugs.freedesktop.org/show_bug.cgi?id=103556">bug 103556</a> from <a class="email" href="mailto:lionel.g.landwerlin@linux.intel.com" title="Lionel Landwerlin <lionel.g.landwerlin@linux.intel.com>"> Lionel Landwerlin</a> <pre>(In reply to Eero Tamminen from <a href="show_bug.cgi?id=103556#c30">comment #30</a>) > The hang issues I've filed (this and compute) one are too rare/random to be > bisectable. > > In last few days, I got one hang in Heaven on SKL GT2 two days ago, one hang > on SKL GT3e yesterday (and one hang in CarChase on SKL GT4e yesterday). > This is from doing 3 runs, few times on different gfx stack setups every > day, on each of the machines. > > On other machines than SKL, they're much rarer (attached BDW hang is the > only one I've noticed). I'm starting to think we might have a problem with the tracking of the aperture available. By default it seems to be set to 4Gb, but that doesn't make sense to me on gen8+, I would expect 2^48 (48bits of address space). Reducing that number to like 200Mb in i965 triggers all kind of random hangs with Heaven. 4Gb might be big enough to only trigger issues after a long time. It would explain the difficulty to reproduce. Anyway that's my current track, I'll try to understand this better with Ken.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>