[Paraview] running paraview in parallel with a batch script/MPI

[Pat Marion]

Hi Rich,

The command line will be:

mpirun -np 1 /path/to/pvbatch /path/to/script.py


The pvbatch executable is similar to pvserver, except proc 0 doesn't wait
for a client connection, it reads the python script specified on the
command line and executes the script as if it were instructions from a
client.  The script will be read and interpreted on proc 0, but the
processing will be carried out by all the satellite procs, just like
pvserver.

I'd recommend starting with a script that is very simple, like:

# testSphere.py

from paraview.simple import *

Sphere()
writer = XMLPPolyDataWriter(FileName='sphere.pvtp')
writer.UpdatePipeline()


Try getting that to work using -np 1, then try -np 2, you should find
pieces of there sphere written by both processes.

Pat

p.s. If your data is unstructured grid, then your writer would be a
XMLPUnstructuredGridWriter.  Also, I'm not sure if the name should be
"XMLP..." or "XMLPartitioned..."


On Wed, Feb 13, 2013 at 11:48 AM, Cook, Rich <cook47 at llnl.gov> wrote:

> Hello, ParaView genii,
>
> I would like to run ParaView to view some data in parallel using the
> following script from a user as a basis.  I'm not sure how to do this
> right.  I've never scripted Paraview before, and am thus clueless how to
> make it work.  Can someone on this list tell me how Paraview scripting with
> MPI works or point me to a tutorial on your massive tutorial pages?  The
> data is very large and it would be great to decompose the data across the
> cluster.
>
> Thanks!
>
> try: paraview.simple
> except: from paraview.simple import *
> paraview.simple._DisableFirstRenderCameraReset()
>
> filein = XMLPartitionedUnstructuredGridReader(
> FileName=['/p/lscratchd/bodart1/test_para/duct.020000.pvtu'] )
>
> Slice1 = Slice( SliceType="Plane" )
>
> Slice1.SliceOffsetValues = [0.0]
> Slice1.SliceType.Origin = [0.0,0.0,0.0]
> Slice1.SliceType.Normal = [0.0,0.0,1.0]
> Slice1.SliceType = "Plane"
>
> CleantoGrid1 = CleantoGrid()
>
>
> CellDatatoPointData1 = CellDatatoPointData()
>
> w.FileName="test_slice.vtu"
> w.UpdatePipeline()
>
>
> --
> ✐Richard Cook
> ✇ Lawrence Livermore National Laboratory
> Bldg-453 Rm-4024, Mail Stop L-557
> 7000 East Avenue,  Livermore, CA, 94550, USA
> ☎ (office) (925) 423-9605
> ☎ (fax) (925) 423-6961
> ---
> Information Management & Graphics Grp., Services & Development Div.,
> Integrated Computing & Communications Dept.
> (opinions expressed herein are mine and not those of LLNL)
>
>
>
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