All in all that's a bit strange. Your overall gpu performance is good. However 
profiled denoise fails to process on gpu and needs to be reprocessed on cpu. 
Hence the slowdown. Do you see similar problems with the equalizer module 
activated?

What's your setting of opencl_memory_headroom? Quite typically "good" values 
are in the range of 300 to 400. Another parameter worth trying is 
opencl_event_handles (iirc). Try lower values like 5 or 10.

Ulrich


Am 06.10.2013 um 21:08 schrieb Christian Kanzian <[email protected]>:

> Am Sonntag, 6. Oktober 2013 schrieb Ulrich Pegelow:
>> Hi,
>> 
>> you should check if increasing the value of opencl_memory_headroom improves
>> things. Could be that your driver needs more space reserved in GPU memory.
>> 
>> Ulrich
> 
> Thank you for this hint.
> 
> I increased the value of opencl_memory_headroom until it starts tiling. No 
> changes in performance at all. 
> Maybe there is something else wrong with my system settings.
> 
> Would be interessting if somebody else will get faster process times.
> Here is the RAW with the sidecarfile for testing: 
> http://homepage.boku.ac.at/kanzian/dl/IMGP10191.zip
> 
> Christian
> 
>> 

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