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From: "Alex " <a.brandmeyer@email.com>
Newsgroups: comp.soft-sys.matlab
Subject: Re: Why no 64-bit support for Mac OS?
Date: Mon, 14 Jan 2008 09:01:10 +0000 (UTC)
Organization: Radboud University Nijmegen
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Hello,

Will there be a 64-bit version of OS X Matlab with R2008a? 

For our research group, the main interest comes from the
hope that memory limitations will be improved with a 64-bit
OS X version.

Best,
Alex Brandmeyer

Brian Arnold <barnold@mathworks.com> wrote in message
<47863DB3.4040708@mathworks.com>...
> Hi Sridhar,
> 
> This is what I posted to this newsgroup on December 17,
2007, in 
> response to the same question:
> 
> Hi,
> 
> We appreciate all of the interest in having a native 64-bit 
> implementation on OS X 10.5 Leopard, and we would like to
share more 
> specific information regarding availability.
> 
> We have been investigating Mac 64-bit support for quite
some time, and 
> with Leopard's release, we now have many elements reaching
a ready state.
> 
> Leopard is the first OS X release to have 64-bit libraries
"top to 
> bottom" (Tiger 10.4 only had 64-bit support in the BSD
Unix layer, 
> limiting 64-bit support to non-UI tools and engines). 
However, 
> Leopard's Java, which is used heavily by MATLAB Desktop
and many 
> Toolboxes including SimBiology and Distributed Computing
Toolbox, is 
> only 64-bit on Intel-based Macs, so any 64-bit support we
would develop 
> will require Intel.  Also, TrollTech Qt, which is used
heavily by 
> Simulink, is not yet available 64-bit for Leopard. This
means we may 
> need to stage 64-bit support, or have a limited
MATLAB-only beta.
> 
> In the meantime, here is some publicly available
information that you 
> can use to get ready for a 64-bit product:
> 
> Intel-based and 64-bit-capable hardware and OS X 10.5
Leopard will be 
> required to run 64-bit MathWorks software. Not all
PowerPCs and not all 
> Intel-based Macs are 64-bit-capable. Currently, only the
PowerPC G5, 
> Intel Core 2 Duo or Xeon processors support 64-bit; so,
the PowerPC G4, 
> G3 and original Intel Core Duo or Core Solo processors
won't be able to 
> run 64-bit applications.
> 
> Stay tuned for information, your enthusiasm and your
patience are both 
> greatly appreciated.
> 
> Thanks,
> 
> Brian
> Mac Developer
> The MathWorks, Inc.
> 
> Sridhar Mahadevan wrote:
> > It seems a bit surprising, given that 64-bit support is 
> > enabled for Windows (XP and Vista) as well as for Linux. 
> > 
> > They are all running on the same processors these days. 
> > Also, Mac OS X is based on a Unix kernel, so if Linux 64-
> > bit support is available, why not for Mac OS?
> > 
> > Can we expect 64-bit support for the Mac platform in the 
> > next release(s)?
> > 
> > - Sridhar
> >