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| Adler32 algorithm vectorized, (paper) https://www.powerdeveloper.org/forums/viewtopic.php?f=23&t=250 |
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| Author: | markos [ Sun May 15, 2005 12:15 am ] |
| Post subject: | Adler32 algorithm vectorized, (paper) |
Hi, I've just finished vectorization of the Adler32 algorithm. this algorithm is part of zlib and also libmhash (in a slightly different implementation but basically the same). I got a 2-2.5x speed increase from this, I believe I could get a bit more out of it, but I describe the process in more detail in this paper: http://people.debian.org/~markos/powerp ... ltivec.pdf Comments, suggestions welcome. I will look into other parts of zlib, and also the runtime Altivec detection so that it will use the proper version automatically. Konstantinos |
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| Author: | lu_zero [ Wed May 18, 2005 11:06 pm ] |
| Post subject: | Re: Adler32 algorithm vectorized, (paper) |
The same algorithm is present in ffmpeg and could enjoy your optimization, pretty nice paper btw =) |
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