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Date: Fri, 20 Apr 2012 16:48:22 +0200
From: Lukas Odzioba <lukas.odzioba@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: [Off-topic] Experiments!
2012/4/20 magnum <john.magnum@...hmail.com>:
> I'm starting to get really frustrated too. Not only our formats are
> immature, all OpenCL SDK's and tools are too. Bugs, weird "features",
> undocumented behavior. An example: after days of trying to figure out
> why I could not bump global work size in RAR, it turned out that
> "__global const" is apparently treated as "__constant" by nvidia - thus
> getting a serious size limitation. But the end result was not warnings
> or build errors - just a crashing runtime. This is unacceptable, I'm
> thinking maybe I should focus on CUDA until OpenCL is more mature.
CUDA has it's own "features" too :). Sometimes even "i++;" is not working.
Also using global (declared out of function) pointers does not work at all.
In general gpu programming for now it is not so pleasant as cpu programming.
Lukas
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