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Board Beginners & Help
Re: further improved phatk OpenCL kernel (> 4% increase) for Phoenix - 2011-08-11
by
cubemonkey
on 17/08/2011, 16:16:18 UTC
6950's using the new phoenix + phatk2  (clocked 880 gpu / 300 mem)

old: 360Mh/s
now: 364Mh/s

(consistent across all GPUs)

I messed a lot with flags... this is what gave me the highest numbers:

Code:
-k phatk2 VECTORS2 AGGRESSION=13 WORKSIZE=64 FASTLOOP=false

Not sure why, but worksize=64 is what gave me the biggest gain.  Tried all aggression between 10 and 16 as well.  13 yielded the highest.