I’m trying to use nvidia driver 410.73 on fedora 29 kernel 4.18.16. X Window works fine, but OpenCL application has a problem. It says
Error: GPU steps do not match CPU steps. Workunit processing aborted.
and aborts. Other users using kernel 4.15.x on ubuntu 18.04 seem to succeed. So I am using nvidia 396.54 driver. The application is used at https://boinc.thesonntags.com, but I am suspecting this applies to any OpenCL applications.
Does anyone help me? I don’t know how to get further error messages, so am at a loss what to do.
Thanks in advance!!
Same driver and kernel version on Fedora29.
Sidefx Houdini crashes when I turn on opencl but before it dies I get this error:
X server found. dri2 connection failed!
DRM_IOCTL_I915_GEM_APERTURE failed: Invalid argument
Assuming 131072kB available aperture size.
May lead to reduced performance or incorrect rendering.
get chip id failed: -1 
param: 4, val: 0
Thanks in advance.
Sorry in my case removing beignet solved my problem. Seems like a conflict.
Thanks for reply.
I tried to remove beignet (actually I had had one installed), but this phenomenon still persists. Without beignet, OpenCL application still aborts…