[Linux-cluster] Solution for HPC

[dlugi]

 Ok I understand. Anyway thanks for explanation. My software is Blender. 
 I dont know why for such a thing like fluid dynamics somebody somebody 
 coded software without multithreading. I will ask on Blender forum maybe 
 there is any good version with support for multithreading. Thanks for 
 fast and profi support :) I appriaciate.

 Konrad



 On Wed, 20 Apr 2011 09:05:52 +0000, "Jankowski, Chris" 
 <Chris.Jankowski at hp.com> wrote:
> Konrad,
>
> The first thing to do is to recompile your application using a
> parallelizing compiler with proper parameter equal to the number of
> cores on your server.  This of course assumes that you have the 
> source
> code for your application.
>
> For a properly written Fortran and C application a modern
> parallelizing compiler would do a great job.
>
> Note that today you may have easily 48 real physical cores i.e. 96
> independent parallel threads of execution with hyperthreading turned
> on a modern Intel x86_64 server such as HP DL980 G7.
>
> Then the next step is to tune the application on the source code
> level to increase its parallelism such that it can actually use the 
> 96
> threads.
>
> Only then, if the elapsed time of your processing is still
> unacceptably long (weeks), you would move to a HPTC cluster. This is
> very expensive - the Infiniband interconnects do not come cheap and
> you still need to put in a few man years of work to tune your code 
> for
> the HPTC cluster.
>
> I hope this helps.
>
> Regards,
>
> Chris Jankowski
>
> -----Original Message-----
> From: linux-cluster-bounces at redhat.com
> [mailto:linux-cluster-bounces at redhat.com] On Behalf Of dlugi
> Sent: Wednesday, 20 April 2011 17:50
> To: linux-cluster at redhat.com
> Subject: [Linux-cluster] Solution for HPC
>
>  Hi Gurus,
>
>     I would like to ask You about something. Since few days I`m
>  preparing 3D fluid simulation. The problem is that my simulation is
>  rendered only on one core. CPU usage provading information that only 
> 1
>  core is 100% used by process. In my opinion this software doesnt 
> support
>  multithreading thats why everything is calculated on one core.
>
>  Is it possible to build some kind of HPC cluster where this single
>  process could be distributed for several machines ?
>  I`m not thinking about dividing this job for several small peaces 
> and
>  distributing them. I`m thinking about infrastructure where single
>  process could use CPU power from several machines at the same time.
>
>  Is it possible to do this on RH or Fedora ?
>
>  cheers
>
>  Konrad
>
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