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IBM PowerPC 970 Optimized Compilers

Several news outlets have reported on the newly released Beta compilers from IBM.



XL C and XL C++ for Mac OS X (download here) are PowerPC 970 optimized versions of IBM's compilers which have been show to improve Power4's SPEC performance (PDF) significantly.



Some early benchmarks (Ars Thread) demonstrate significant performance boosts -- up to +210% in Scalar performance in one particular PowerMac G5 Fortran application -- with more modest improvements in other measures. The code utilized in this benchmark appears to be the Jet3d codebase used in the early "NASA" G5 Benchmarks.

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111 months ago
Does this need the G5, or will it run on older systems? Also, how is this any different from Apple's developer tools with the G5 patch? I don't know that much about programming :)
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111 months ago
Kool,

Possibility of a zippy-fast compiler for the G5 to replace the slug called GCC.

Should be interesting to see the comparison of the code generated between XL C6.0 and GCC 3.3 for OS X.
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111 months ago
here's a thread from Ars that someone sent me.

Thread's from Ars... they may have some more insight as to how big a deal this is

http://arstechnica.infopop.net/OpenTopic/page?a=tpc&s=50009562&f=8300945231&m=4250963285

arn
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110 months ago
Very impressive results on the NASA benchmark. +210% scalar performance is nothing to sneeze at.
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110 months ago
> up to +210% in Scalar performacne <

I have read that Clearasil will clear up that "performACNE" right up. ;-)

[I am sure the typo will be corrected soon!]
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110 months ago
Wow this is MAJOR news!!

im not even kidding.


kicks A$$
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110 months ago
I think (after reading the ars thread), that a big benefit will be re-compoling the OS with this. It looked like it wasn't only G5s that benefitted, but G4s and G3s could benefit slightly (e.g. very small %s) too. I am about 99.99999999999999999999% sure that they wouldn't recompile Panther with it now if they are anywhere close to release, but if/when they do, it should give another nice performance boost to the areas not already well-optimized for the G5 and perhaps slight ones for the G3/G4...

I am presuming of course that Apple is still using gcc for 10.3 and not a pre-release version of this. Lots of ifs without more digging...
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110 months ago
This is great, the systems are just now shipping and already we have news that these things can become even faster than we first thought by just an update or two. Perhaps it's just all these years of being stuck with Motorola, but I am not used to seeing so much positive news about increased performance like this.
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110 months ago
im going to assume that ibm and apple have been working on this and that apple has had their hands on a early version for panther.. there is no reason why apple wouldnt be in the loop..
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