[vtkusers] Problem with ParallelIso example..

[Mario]

Thank you Kevin,
I missed that a was using another images's dataset and it is 41MB...
Maybe I have to try with a larger dataset...

Thanks
Mario

2006/12/19, Kevin H. Hobbs <hobbsk at ohiou.edu>:
> On Mon, 2006-12-18 at 17:13 +0100, Mario wrote:
> > Hi all,
> > I ran the parallelIso example from
> > vtk\examples\parallelprocessing\generic with MPI on two desktop PCs
> > connected via LAN and I had not speed-up but it takes really much time
> > more than on a single machine.. What's the problem?
>
> There is no problem. In fact you should expect it to be slower!
>
> VTKData/Data/headsq/* is only 1.5 megabytes and LAN is not a fancy low
> latency interconnect. There will be more time spent communicating
> between the nodes than each node will spend doing any calculations.
> Usually when the amount of data increases the situation should reverse
> and you will see a speed up.
>
>
>