Hi epic graphics friends!
We have a low frequency GPU crash (or several?) on 5.5.4. This one occurred for me in editor when running two PIE clients with a very very simple world (almost nothing fancy to render).
attached please fine the relevant bits of log and the gpudump. I notice that there is no shader debug info attached to the gpudmp. Is there something I need to toggle to give you access to that? based on the log it looks like lumen reflections were in progress? (but I’m not sure if that means that’s where the problem is)
Thanks!
Josh
Steps to Reproduce
happens randomly- run PIE in editor. also happens in game
Hi Joshua,
Unfortunately, I tried taking a look at the Aftermath dump you attached. Still, as you already mentioned, since there are no shader debug symbols available, it is impossible to tell the cause of the crash. To add shader PDBs to your build, you will need to set the following options in your BaseEngine.ini and cook your game:
r.Shaders.Optimize=0 r.Shaders.Symbols=1 r.Shaders.SkipCompression=1 r.ShaderDevelopmentMode=1The cook process should then produce the PDBs under the project directory inside <path to project>/Engine/Saved/ShaderSymbols. Just so you know, this can make a large amount of data, so do this sparingly to save disk space. If you then point Aftermath to that directory, you should be able to view the associated shader source code inside Aftermath. Feel free to let me know if you have any questions around this.
Cheers,
Tim