[Paraview] slightly puzzled by paraview extract block behavior (UNCLASSIFIED)

Mon Sep 15 17:06:52 EDT 2014

Classification: UNCLASSIFIED
Caveats: FOUO
this just in.....

using the same data you are ( ParaViewdata: naca.bin.case, to eliminate one difference at least)

when I tried 16 procs on the server side the server seems to be hung. didn't crash the server (not yet at least)
but it might as well have because the client is frozen waiting on the server. the server is accumulating run time but nothing else.

-m
From: Andy Bauer [mailto:andy.bauer at kitware.com]
Sent: Monday, September 15, 2014 4:01 PM
To: Stephens, Michael M ERDC-RDE-ITL-MS
Cc: paraview at paraview.org
Subject: Re: [Paraview] slightly puzzled by paraview extract block behavior (UNCLASSIFIED)

Hmm, well I have no idea if we're hitting the same bug or not but it seems like too much of a coincidence that this is happening for both of us at 14 procs but not 13. I created a mantis issue at http://www.paraview.org/Bug/view.php?id=14996. Feel free to add to it if you can share your Ensight file.
Regards,
Andy

On Mon, Sep 15, 2014 at 4:53 PM, Stephens, Michael M ERDC-RDE-ITL-MS <Michael.M.Stephens at erdc.dren.mil<mailto:Michael.M.Stephens at erdc.dren.mil>> wrote:
Classification: UNCLASSIFIED
Caveats: FOUO
in all cases for the ensight data we are working with, there is no READ error.
there is no error reported at all either for reading or extract block operations.

the extract block silently fails to pass the variable data for larger core counts on the data we are working on. geometry seems okay.

btw, I am not very fluent in my understanding of the ensight formats (case files or otherwise)

-m

From: Andy Bauer [mailto:andy.bauer at kitware.com<mailto:andy.bauer at kitware.com>]
Sent: Monday, September 15, 2014 3:23 PM
To: Stephens, Michael M ERDC-RDE-ITL-MS
Cc: paraview at paraview.org<mailto:paraview at paraview.org>
Subject: Re: [Paraview] slightly puzzled by paraview extract block behavior (UNCLASSIFIED)

Hey Mike,
I'm getting something funky when reading an Ensight file with 14 processes as well that I don't see with 2 or 13 processes (I didn't bother trying with other amounts). The error I get is:
ERROR: In /home/acbauer/CODE/ParaView/ParaView-v4.1.0/VTK/Common/DataModel/vtkDataSet.cxx, line 414
vtkStructuredGrid (0xa70560): Point array DENS with 1 components, only has -325 tuples but there are 0 points
This is just for loading in the file though and not even using the extract block filter. Are you getting a similar error?
I'm getting the error with the naca.bin.case at http://www.paraview.org/gitweb?p=ParaViewData.git;a=tree;f=Data/EnSight;h=fc6cbe6fc7851e2f3bae520f4cf4b933ab963c93;hb=HEAD.
Best,
Andy

On Mon, Sep 15, 2014 at 3:54 PM, Stephens, Michael M ERDC-RDE-ITL-MS <Michael.M.Stephens at erdc.dren.mil<mailto:Michael.M.Stephens at erdc.dren.mil>> wrote:
Classification: UNCLASSIFIED
Caveats: FOUO
had someone ask me for help with a problem they were having with paraview v4.1.0 in server/client mode.

steps are: i) read in an ensight case file, ii) use Extract Block filter to yank out a particular block,  iii) color extracted block with various variables.
simple enough.

let me say up front that the data is pretty small (order of 100k points, 450k cells).
we ran this using a varying number of procs in a single node.

when the number of procs got to be 14 or greater (16 cores in the server nodes) the extract block step lost the data variables.
the geometry was correct still but none of the data variables survived the operation.

I'll stipulate that it makes little sense to use more than one proc for data this small.

but why does the extract block not still work?

slightly puzzled.

-m

Classification: UNCLASSIFIED
Caveats: FOUO

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Classification: UNCLASSIFIED
Caveats: FOUO

Classification: UNCLASSIFIED
Caveats: FOUO
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