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Vectorizing and parallelizing in OS X System
If you use your G4 for numerical computation, this may be of interest to you. I've had a page with computing tools for OS X for some time now. I just added some information and analysis on how one could harness the full power of a dual G4 for numerical work.

The page is about using AltiVec and using both processors in parallel for C and Fortran codes. The speed gain upon using both parallelization and vectorization is huge. On my tests, it varied between 4x and 10x improvement!

Gaurav Khanna

[Editor's note: OK, my head is spinning from just reading some of what Gaurav has put together ... but I figure his information may be of use to some of you, so here it is!]
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need for speed
Authored by: reverie on Jan 15, '02 03:45:58PM

Mmmmm, this is excellent news for unix programmers on OS X. Now if only the person who compiled Mesa for darwin could figure out how to use those altivec hooks, us unix graphics programmers on OS X could show up all those linux boxes. Optimize, optimize!!

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Authored by: smeger on Jan 22, '02 02:13:08AM

Hey, this is damn cool. But I was wondering whether anyone's got info on comparative benchmarking with Windows machines. I'm forced (really really against my will) to do my numerical computing on multi-processor Intel machines. I'd love to have some solid benchmarks to show to my faculty advisor that indicate that I could run codes faster with a dual-G4.

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Updated Link!
Authored by: gkhanna on Aug 13, '02 09:47:18AM
Please note that these Computation Tools have moved to a new location: Thanks!

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Site relocation and reorganization
Authored by: gkhanna on Sep 19, '03 11:10:59PM
Newly reorganized site permanently relocated to:

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