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Re: question about CUDA

  • To: mathgroup at smc.vnet.net
  • Subject: [mg115678] Re: question about CUDA
  • From: Ivan Smirnov <ivan.e.smirnov at gmail.com>
  • Date: Tue, 18 Jan 2011 05:49:31 -0500 (EST)

Can you see then any ways to boost performance with CUDA for searching of
possible solutions of any diophantine equations with powers?

2011/1/17 Patrick Scheibe <pscheibe at trm.uni-leipzig.de>

> Hi,
>
> this is not possible for one obvious and several other reasons.
> The obvious one is, that it is not implemented and *maybe* will never be
> for several reasons.
> You cannot think of CUDA as some kind of extension which allows you to
> run Mathematica code on the faster graphics card. Every function has to
> be separately implemented for CUDA.
>
> The version 8 Mathematica has several function which use CUDA, mainly
> for image processing and for matrix operations. Find an overview in the
> doc-center here
>
> CUDALink/guide/CUDALink
>
> CUDA is best used for highly "data-parallel" algorithms [1] which is, as
> far as I can say, not the case for Solve.
>
> Cheers
> Patrick
>
> [1] http://en.wikipedia.org/wiki/Data_parallelism
>
>
> On Mon, 2011-01-17 at 18:56 +0300, Ivan Smirnov wrote:
> > Patrick, thanks for answer. I have such thoughts.
> > Can you say, what additional code is needed to run Solve command in
> > Mathematica 8 with CUDA?
> >
> > 2011/1/17 Patrick Scheibe <pscheibe at trm.uni-leipzig.de>
> >         Hi,
> >
> >         no, this is not true. You can use CUDA enabled cards for
> >         computations
> >         even if this is the only card in the system. It should be
> >         clear, that
> >         then some resources of your graphics card may be used by other
> >         applications currently running. Another thing is that your
> >         CUDA program
> >         may use too much memory or has too many bugs and crashes your
> >         system..
> >         this is the point where a second card become handy. For now,
> >         leave it
> >         like that and start playing with CUDA. The specification of
> >         your card
> >         here
> >
> >         http://www.nvidia.com/object/product_geforce_8800_gt_us.html
> >
> >         shows that you have 112 CUDA Cores and 512 MB Ram, which is
> >         fine to see
> >         the magic.
> >
> >         Cheers
> >         Patrick
> >
> >
> >
> >         On Mon, 2011-01-17 at 05:36 -0500, Ivan Smirnov wrote:
> >         > Hello.
> >         > I'm planning to start using CUDA.
> >         > If I have 8800GT card (it supports CUDA), can I start use
> >         CUDA computations
> >         > in Mathematica 8 with just this card or I need install one
> >         more card in that
> >         > PC? (I heard that one man said that supposedly there are
> >         needed 2 or more
> >         > cards as CUDA are parallel computations - is it true?).
> >         >
> >         > Ivan Smirnov
> >         >
> >         >
> >
> >
> >
> >
>


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