[Paraview] distributed stream tracer scalability issue

[burlen]

Hi Zp,

Thanks for the hint, I hadn't expected that, and was using rk4.

Burlen

Zhanping Liu wrote:
> Hi Burlen:
>  
>     Have you tried the RK-45 integrator? It uses an adaptive step size 
> and hence in many cases makes streamline integration faster than the 
> other two modes (RK-2 and RK-4)? I agree with John in that the low 
> performance exhibited to us might be caused by 'other' (data-depenent) 
> components than the inherent integration part itself, e.g., point 
> location and cell location in an unstructured grid (which are cetainly 
> also related to streamline integration).
>  
>     Thanks.
>  
>     -Zhanping
>
> On Mon, Aug 24, 2009 at 7:58 PM, burlen <burlen.loring at gmail.com 
> <mailto:burlen.loring at gmail.com>> wrote:
>
>     We've been using the distributed stream tracer to generate
>     100s-1000s of stream lines per time step. It's very slow, and it
>     doesn't scale at all.  The class comments say as much. I'm sure
>     there is a reason why this implementation was chosen. Is there
>     something that generally prevents real parallel implementation? Is
>     there a better implementation available out there?
>
>     There is this post a while back
>     http://www.paraview.org/pipermail/paraview/2009-July/012959.html
>
>     What's the status?
>
>     Thanks
>     Burlen
>
>
>
>
>
>
>
>     _______________________________________________
>     Powered by www.kitware.com <http://www.kitware.com/>
>
>     Visit other Kitware open-source projects at
>     http://www.kitware.com/opensource/opensource.html
>
>     Please keep messages on-topic and check the ParaView Wiki at:
>     http://paraview.org/Wiki/ParaView
>
>     Follow this link to subscribe/unsubscribe:
>     http://www.paraview.org/mailman/listinfo/paraview
>
>
>
>
> -- 
> Zhanping Liu, PhD
> Kitware, Inc.
> 28 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-371-3971 x 138
> http://www.zhanpingliu.org