Re: amber-developers: Apple's feed back for amber.

From: Mengjuei Hsieh <>
Date: Tue, 12 Jul 2005 16:27:20 -0700


First of all, the extra g5 modification code from Apple Computer does NOT
contain any AltiVec code. And I don't believe they will "rapidly" change
Intel CPU on high performance computing. The description "in the coming
months" is not very correct. In fact, things won't change much within 2
years especially on HPC. Apple Computer will introduce Intel based low
(like mac mini) machines first (mostly) next year. And the transition will
take 2 more years.

However, I am really not sure if they are willing to provide support for
this patch. I myself don't have any G5 machine here in our group either.
I am going to ask the HPC group, and making sure how they are going to
maintain the patch.

Mengjuei Hsieh, Luo group, Molecular Biology and Biochemistry, University
California Irvine. Tel: 49562, Address: 3144 Natural Science I building,
UCI, Irvine CA 92697-3900. Group Homepage:
> From: John Mongan <>
> Reply-To: "" <>
> Date: Tue, 12 Jul 2005 15:27:13 -0700
> To: "" <>
> Subject: Re: amber-developers: Apple's feed back for amber.
> Just to make explicit something that's probably well known to all
> concerned here: Apple's interest in producing/supporting/maintaining G5
> and Altivec specific codes and optimizations is likely to wane rapidly
> in the coming months as they transition to Intel processors. This may be
> a further reason to avoid incorporating these patches into the main
> codestream, especially if they're going to be disruptive.
> John
Received on Wed Apr 05 2006 - 23:49:54 PDT
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