[Paraview] [EXTERNAL] extract CTH parts (UNCLASSIFIED)

Tue Aug 27 10:37:58 EDT 2013

Classification: UNCLASSIFIED
Caveats: NONE

No, I'm not able to share either ... I'm going to try to find a similarly
sized dataset that might be more readily available.   Although, there's not
really an easy way to share a dataset with 1024 spcth files .....

We are having an additional issue with this same dataset .... loading the
dataset using less than 80 servers (so there are no holes in the geometry)
we are creating a simple animation.   There are several hundred timesteps of
data and we are able to interactively march through time and see the
animation.  However, when trying to save out a movie,   the frames suddenly
go blank.  We tried saving out as PNG files, and the first 22 timesteps
dumped fine, and then we started saving out solid black images.   We
restarted ParaView and started dumping out JPEG frames, and we got out to
timestep 100 and it again started dumping black frames.     Interactively
viewing the data, all of the timesteps are valid -  is there a memory leak
or something similar that's causing the renderer to hose up?

-----Original Message-----
From: Utkarsh Ayachit [mailto:utkarsh.ayachit at kitware.com] 
Sent: Tuesday, August 27, 2013 10:26 AM
To: Angelini, Richard C (Rick) CIV USARMY ARL (US)
Cc: Scott, W Alan; paraview at paraview.org
Subject: Re: [Paraview] [EXTERNAL] extract CTH parts (UNCLASSIFIED)

Rick,

Coincidentally, I am looking at the CTH parts class of filters right now.
Can you share the data or the images with the holes?

Utkarsh

On Mon, Aug 26, 2013 at 4:08 PM, Angelini, Richard C (Rick) CIV USARMY ARL
(US) <richard.c.angelini.civ at mail.mil> wrote:

	Classification: UNCLASSIFIED
	Caveats: NONE

	Alan - yeah, the dataset opens correctly with < 80 servers.   It
doesn't
	matter how I distribute those 80 servers - I can do 16 processes on
5 nodes,
	8 processes on 10 nodes and it works.   If I play the same game with
> 80
	nodes, I start seeing the holes.   I *doubt* that it's a bad node,
but I'll
	do some deeper investigating just to verify.

	-----Original Message-----
	From: Scott, W Alan [mailto:wascott at sandia.gov]
	Sent: Monday, August 26, 2013 3:43 PM
	To: Angelini, Richard C (Rick) CIV USARMY ARL (US);
paraview at paraview.org
	Subject: RE: [EXTERNAL] [Paraview] extract CTH parts (UNCLASSIFIED)

	Bad node?

	Try running the problem on a few nodes.  Next, try running the "big
node"
	problem.  As you shift the nodes you are using, does the issue
follow the
	underlying iron, or the same bad blocks in the dataset?

	Dataset opens correctly with smaller number of nodes?

	Want me to try it here?  80 does seem really, really
small/easy/trivial for
	big data...

	Alan

	-----Original Message-----
	From: paraview-bounces at paraview.org
[mailto:paraview-bounces at paraview.org]
	On Behalf Of Angelini, Richard C (Rick) CIV USARMY ARL (US)
	Sent: Monday, August 26, 2013 1:38 PM
	To: paraview at paraview.org
	Subject: [EXTERNAL] [Paraview] extract CTH parts (UNCLASSIFIED)

	Classification: UNCLASSIFIED
	Caveats: NONE

	I'm having an issue with the extract CTH parts filter in ParaView
4.0.1.
	The dataset consists of 1024 spcth files, regular structured mesh,
14
	blocks.  The issue seems to be that once I exceed X number of server
	processes (it seems to be about 80 servers), I start seeing holes in
the
	resulting geometry.  The more I exceed the magic number of servers,
the more
	holes I see in the resulting part.    If I create a clip using the
	volume_fraction scalar variable(s),  the geometry of the clip is
correct -
	that is, the underlying data seems to be there.   So, I'm thinking
that the
	data is being properly distributed and all of the data is accounted
for, but
	that there's an issue with the "extract CTH parts" filter?
Doesn't seem
	likely, but stranger things have happened.

	Any ideas?

	Classification: UNCLASSIFIED
	Caveats: NONE

	Classification: UNCLASSIFIED
	Caveats: NONE

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Classification: UNCLASSIFIED
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