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Re: Does Mathematica 5 use multiple processors on SPARC?

• To: mathgroup at smc.vnet.net
• Subject: [mg55165] Re: [mg55137] Does Mathematica 5 use multiple processors on SPARC?
• From: Igor Antonio <igora at wolf-ram.com>
• Date: Tue, 15 Mar 2005 00:21:49 -0500 (EST)
• Organization: Wolfram Research, Inc.
• References: <200503140843.DAA27103@smc.vnet.net>
• Reply-to: igora at wolf-ram.com
• Sender: owner-wri-mathgroup at wolfram.com

Dave wrote:
> I assume this technical FAQ
> 
> http://support.wolfram.com/mathematica/systems/allplatforms/multipleprocessors.html
> 
> is out of date since it says "The current version of Mathematica does 
> not take direct advantage of multiple processors on any platform"
> 
> whereas
> 
> http://www.wolfram.com/products/mathematica/newin5/performance/
> 
> says "Mathematica 5 also takes advantage of multiple processors for a 
> range of numerical operations on those operating systems such as Linux, 
> Windows, and HP-UX that support this multithreaded capability."
> 
> Now my question is does Mathematica 5 support multiple processors on 
> Solaris? Since the kernel code is very similar across platforms, I 
> assume it does, although it is odd to mention HP-UX and not Solaris, 
> when the latter is probably used much more.
> 
> 

Dave,

Solaris, AIX, SGI, and Linux x86-64 don't use threaded libraries, so 
numerical operations (the ones that use BLAS libraries for example) will 
not take advantage of multiple processors.


Igor Antonio
Wolfram Research, Inc.
http://www.wolfram.com

To email me personally, remove the dash.

• References:
  • Does Mathematica 5 use multiple processors on SPARC?
    • From: Dave <nospam@nowhere.com>