https://bugs.freedesktop.org/show_bug.cgi?id=92923
Bug ID: 92923 Summary: SGPR spilling Product: Mesa Version: 11.0 Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/radeonsi Assignee: dri-devel@lists.freedesktop.org Reporter: freedesktop.org@psycho3d.de QA Contact: dri-devel@lists.freedesktop.org
Created attachment 119606 --> https://bugs.freedesktop.org/attachment.cgi?id=119606&action=edit stacktrace from game log file
"LLVM triggered Diagnostic Handler: Ran out of VGPRs for spilling SGPR"
The game Planet Explorers crashes after a few minutes, the log file is flooded with this error message.
Additional error messages: radeon_llvm_compile: Processing Diag Flag LLVM failed to compile shader EE si_state_shaders.c:647 si_shader_select - Failed to build shader variant (type=1) 1
The problem may have started with mesa 11.0 but I'm not sure, I don't play it very often. The game runs on unity 5.
Attaching backtrace and stacktrace from the log file. There is also a memory map I could attach.
OpenGL info from the log file: Version: OpenGL 3.0 [3.0 Mesa 11.0.5] Renderer: Gallium 0.4 on AMD PITCAIRN (DRM 2.43.0, LLVM 3.7.0) Vendor: X.Org VRAM: 2048 MB
Hardware is a Radeon HD 7870
https://bugs.freedesktop.org/show_bug.cgi?id=92923
--- Comment #1 from pat freedesktop.org@psycho3d.de --- Created attachment 119607 --> https://bugs.freedesktop.org/attachment.cgi?id=119607&action=edit backtrace from game log file
https://bugs.freedesktop.org/show_bug.cgi?id=92923
Michel Dänzer michel@daenzer.net changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |tstellar@gmail.com
--- Comment #2 from Michel Dänzer michel@daenzer.net --- Tom, any ideas?
pat, please run the game with the environment variable R600_DEBUG=vs,gs,ps and attach its stderr output after reproducing the problem.
https://bugs.freedesktop.org/show_bug.cgi?id=92923
pat freedesktop.org@psycho3d.de changed:
What |Removed |Added ---------------------------------------------------------------------------- Attachment #119606|0 |1 is obsolete| |
--- Comment #3 from pat freedesktop.org@psycho3d.de --- Created attachment 119948 --> https://bugs.freedesktop.org/attachment.cgi?id=119948&action=edit Game log file
Steam seems to mess with stderr, I hope this game log has the info you need.
https://bugs.freedesktop.org/show_bug.cgi?id=92923
--- Comment #4 from Michel Dänzer michel@daenzer.net --- (In reply to pat from comment #3)
Steam seems to mess with stderr, I hope this game log has the info you need.
It does, thanks.
https://bugs.freedesktop.org/show_bug.cgi?id=92923
--- Comment #5 from pat freedesktop.org@psycho3d.de --- Version: OpenGL 3.0 [3.0 Mesa 11.2.0-devel (git-bca1805)] Renderer: Gallium 0.4 on AMD PITCAIRN (DRM 2.43.0, LLVM 3.8.0)
No more crashes with the current game version and mesa git/llvm svn, but it runs with 1 FPS (with very rare boosts to 45-60 FPS) on lowest settings. The log file still looks like before as far ar I can tell.
This was probably my last test with AMD/mesa.
https://bugs.freedesktop.org/show_bug.cgi?id=92923
--- Comment #6 from Nicolai Hähnle nhaehnle@gmail.com --- Sorry for your pain. We did make some changes to make LLVM more robust recently, so that's something. As for the performance problems you're seeing, I'd really appreciate if you could provide an apitrace, see https://github.com/apitrace/apitrace/wiki/Steam if you're running the game under Steam. That should allow us to reproduce the issue.
https://bugs.freedesktop.org/show_bug.cgi?id=92923
--- Comment #7 from pat freedesktop.org@psycho3d.de --- llvm svn version 257076 (32bit: 257085) OpenGL 3.0 [3.0 Mesa 11.2.0-devel (git-040e314)] apitrace: http://www.psycho3d.de/temp/PlanetExplorersApitrace.7z (300MB 7zipped)
Apitrace should include a few minutes of gameplay, 2x freeze for several seconds. I disabled the steam overlay for the trace but I think I had probably 1-3 FPS during the test.
https://bugs.freedesktop.org/show_bug.cgi?id=92923
--- Comment #8 from Nicolai Hähnle nhaehnle@gmail.com --- Created attachment 120923 --> https://bugs.freedesktop.org/attachment.cgi?id=120923&action=edit fix long buffer wait times observed in trace
Hi pat, thanks for following up with this!
On Tonga, this trace runs into a variant of the compiler error you mentioned earlier in the bug report due to limited SGPRs. This is something we still need to address.
On Carrizo, I can run the trace and I notice an obvious buffer wait time problem. Please try the quick-and-dirty patch I've attached. The trace is still slow for me, but (a) it's a trace and (b) it's not a dGPU part, so I'd be interested to hear how the in-game performance is for you with the patch.
https://bugs.freedesktop.org/show_bug.cgi?id=92923
--- Comment #9 from pat freedesktop.org@psycho3d.de --- Hey Nicolai, thanks for the fast patch.
I've patched rev 5e3edd4 of the 32bit package (lib32-mesa-git, lib32-mesa-git-debug, lib32-mesa-libgl-git) and started the 32bit game binary. It's still at 3-4 FPS.
https://bugs.freedesktop.org/show_bug.cgi?id=92923
--- Comment #10 from pat freedesktop.org@psycho3d.de --- Any last tests you'd want me to do before I upgrade my hardware and say bye bye to AMD?
https://bugs.freedesktop.org/show_bug.cgi?id=92923
--- Comment #11 from Nicolai Hähnle nhaehnle@gmail.com --- With the branch at http://cgit.freedesktop.org/~nh/mesa/log/?h=pub-invalidate the in-game part of your trace plays back at around 11 FPS on a Carrizo, which is an integrated GPU (laptop). It may be worth a shot.
https://bugs.freedesktop.org/show_bug.cgi?id=92923
--- Comment #12 from Nicolai Hähnle nhaehnle@gmail.com --- Created attachment 120987 --> https://bugs.freedesktop.org/attachment.cgi?id=120987&action=edit always add GTT to buffers' initial domain
How much VRAM do you have? Try running the game with GALLIUM_HUD=num-bytes-moved, with and without the attached patch.
https://bugs.freedesktop.org/show_bug.cgi?id=92923
--- Comment #13 from pat freedesktop.org@psycho3d.de --- 2048M VRAM
Test 1: Version: OpenGL 3.0 [3.0 Mesa 11.2.0-devel (git-6f898f7)] Patched with both patches you provided.
With patch: the graph spikes up to 45.5 MB during the loading screen, later it stays at 0 byte. When I turn around it goes up to KB but not MB. Still around 3 FPS, up to 11 when looking at the sky.
https://bugs.freedesktop.org/show_bug.cgi?id=92923
--- Comment #14 from pat freedesktop.org@psycho3d.de --- Test 1: no noticeable difference between patched and not.
Test 2: your repo/branch (git-016eba7), no noticeable improvement (including the GTT patch). Graph also shows minimal bytes moved.
https://bugs.freedesktop.org/show_bug.cgi?id=92923
Marek Olšák maraeo@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |FIXED Status|NEW |RESOLVED
--- Comment #15 from Marek Olšák maraeo@gmail.com --- Fixed a long time ago.
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