Burlen: The choice of RK-45 might not be able to make a big difference for your case if the bottleneck lies in other components of the whole pipeline.
-Zhanping On Tue, Aug 25, 2009 at 2:42 PM, burlen <[email protected]> wrote: > 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 <[email protected] <mailto: >> [email protected]>> 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 >> > > -- Zhanping Liu, PhD Kitware, Inc. 28 Corporate Drive Clifton Park, NY 12065-8662 Phone: 518-371-3971 x 138 http://www.zhanpingliu.org
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