[Pkg-opencl-devel] Bug#781875: beignet: [regression] broken on Haswell

Rebecca N. Palmer rebecca_palmer at zoho.com
Fri Apr 17 21:16:36 UTC 2015


> now every kernel invocation, regardless of arguments
> counts and array sizes, fails
i.e. including ones that worked in 1.0.2-1?  Do they use the 'local' 
memory space (which triggers a third known bug on Haswell)?

> drm_intel_gem_bo_context_exec() failed: Invalid argument
That's the error check added by this patch, but not the same error code 
as I get for a too-large array on Ivy Bridge (that's 
"drm_intel_gem_bo_context_exec() failed: No space left on device"), so 
may be it catching a different bug.

I will report this upstream.

> sudo cat /sys/module/i915/parameters/enable_cmd_parser
> returns 1
That means you don't have the #767148 workaround enabled.  Does it ( 
sudo echo 0 > /sys/module/i915/parameters/enable_cmd_parser ) help?

What are your other i915 parameters ( sudo head 
/sys/module/i915/parameters/* )?



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