MathGroup Archive 2006

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Illusory Multicore Support in 5.2?


Contrablue wrote:
> Greetings,
>
> One of the reasons I upgraded to Mathematica 5.2 was to enjoy the
> benefits of multicore support.  However, despite my running 5.2 on a
> Windows XP x64  dual Opteron system, I have yet to see evidence that
> more than one kernel thread runs in parallel (the evidence, on my
> system, would be to see processor utilization rise above 50% while only
> the Mathematica kernel was active).  This is despite trying quite a few
> evaluations of code that "should" -- according Wolfram documentation --
> initiate parallel execution on my system (numerical dot products, etc.)
>
> Please note, my system fully supports true multithreaded execution on
> two CPUs, as evidenced by 100% CPU utilization on relevant Sandra
> benchmarks and on the new multithreaded POV-Ray releases for AMD64.
>
> Has anyone verified multithreaded kernel operation of Mathematica 5.2
> on a dual processor Windows platform?  If so, could you post a snippet
> of your Mathematica expressions here?
>
> Thanks much!
>   
Try using SingularValueDecomposition on a sufficiently large matrix

Pratik
Wolfram Research, Inc.
Tech Support



  • Prev by Date: Re: Setting up equations
  • Next by Date: Calling .exe with Arguments - Run[] Issue
  • Previous by thread: Illusory Multicore Support in 5.2?
  • Next by thread: Re: Illusory Multicore Support in 5.2?