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Subject: Re: Benchmarking Crafty: G5 vs Xeon

Author: Steven Edwards

Date: 05:25:00 09/19/03

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On September 19, 2003 at 03:11:47, Daniel Clausen wrote:
>On September 18, 2003 at 22:39:34, Steven Edwards wrote:

>>The gang over at http://www.veritest.com was contracted by Apple to run the
>>SPEC
>>benchmarks on the new PowerMac dual 2.0 GHz PowerPC G5.  For comparison
>>purposes, a Dell dual 3.06 GHz Xeon was also used in the testing.  The Mac was
>>running Mac OS X 10.2.7 while the Dell ran Red Hat Linux 9.0.
>
>I believe the SPEC numbers once they officially submit them to the SPEC
>organization.

The Veritest report is worth reading.  It seems internally consistent, and it is
also in line with some other third party testing.

>The "testing" of veritest wasn't the most scientific one, but since there's
>still much room for improvement on the Mac software side (ie a compiler which
>really supports the G5 - I think IBM just released one lately for devs, but I'm
>not sure now) I'm pretty sure it's a very fine machine.

The new IBM PPC compiler gives about a 20% speed improvement over gcc.  However,
it was not used in the Veritest examination.

>Which top model (Mac or PC) is now 10% faster than the other one is not that
>important, given the fact that Mac were _by far_ slower so far compared to PCs.
>So at least a potential CCT-6 member who uses a new Mac shouldn't have to
>complain about speed. :)

The leader position changes from time to time.  Back in late 1999, the Apple
PowerMac G4 was the only consumer machine to be on the US State Department
export blacklist because the box could do better than 1 GFlop/sec sustained.
Then there were the years where Motorola fell behind by quite a bit.  Now it
looks like things are even again, but now with IBM putting its resources into
PPC fab tech, I think that the PPC970 and its relatives will once again assume
the front position.

>Personally I will wait for the 2nd revision of the board and until Apple
>releases Panther officially. Then I'll see whether I get one of these boxes or
>whether I will go for an dual Opteron or something.

I agree that it's rarely a good idea to buy the first release of a wholly new
model from Apple.  Also, it's not clear that Panther is going to support a 64
bit user space API; it may only allow for 64 bit addressing of system space,
i.e., more than 4 GB of virtual memory total but less than 4 GB for any one
process.



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