Re: [Paraview] PV client-server: browsing remote files

2018-01-08 Thread Robert Sawko
Sebastien and Utkarsh,

Thanks for both of your suggestions. I have now looked at them and they both
look pretty good to me. I'll practice with these solutions and see which one I
like best.

Kind Regards,
Robert
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Re: [Paraview] PV client-server: browsing remote files

2018-01-05 Thread Robert Sawko
Hi,

I will bump my own post from a month back (see below) and just will answer the
question in case anyone else was looking for something similar. I haven't found
a way to remotely navigate the file system through ParaView Python API objects,
but of course there are other Python packages which can achieve that. I used
paramiko. Below is my minimal example.


from paraview.simple import LegacyVTKReader, RenameSource, Connect
from paramiko import SSHClient, AutoAddPolicy

'''
This script extracts the output of a remote ls command with to feed into
a LegacyVTKReader. The main use is it to make a collection of VTK files 
into a time sequence inside PV.
'''

# Inputs:
host = 'remote.host.com'
port = 22
username = 'me'
key_filename = '/path/to/private/key'

pvhost = 'localhost'# I typically run pvserver through an ssh tunnel so
pvport = 7  # these are the parameters for local port forward

data_dir = '/path/to/data/on/remote'

# SSH part
# to get a list of files to open
client = SSHClient()
client.set_missing_host_key_policy(AutoAddPolicy())

client.connect(
host, port=port,
username=username,
key_filename=key_filename)

stdin, stdout, stderr = client.exec_command(
'ls -1 {0}'.format(data_dir))
lslines = stdout.readlines()
client.close()

# ParaView part
Connect('localhost', 7)
reader = LegacyVTKReader(FileNames=[
 'data/{0}'.format(l.strip()) for l in lslines])
RenameSource('source', reader)

Hope this helps someone!
Robert

On 12/01/17 at 07:18pm, Robert Sawko wrote:
> Dear ParaViewers,
> 
> 
> I am trying to use Python shell in Client-Server mode, but I am running into
> some difficulties. How can I actually browse the remote directories. I tried
> to use the `os` module, but that obviously ends up being all local. Here's a
> minimal example of what I am trying to achieve.
> 
> 
> from paraview.simple import Connect, LegacyVTKReader
> from os import listdir
> 
> Connect('my_server', port)
> location = '/my/remote/location/'
> 
> file_names = listdir(location).sort()
> reader = LegacyVTKReader(FileNames=file_names)
> 
> 
> Please let me know if it's at all possible to query the directory on the 
> remote
> side through an established connection.
> 
> Many thanks,
> Robert
> -- 
> Seems like the famous poem of turbulence comes from Jonathan Swift
> http://en.wikipedia.org/wiki/The_Siphonaptera

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[Paraview] PV client-server: browsing remote files

2017-12-01 Thread Robert Sawko
Dear ParaViewers,


I am trying to use Python shell in Client-Server mode, but I am running into
some difficulties. How can I actually browse the remote directories. I tried
to use the `os` module, but that obviously ends up being all local. Here's a
minimal example of what I am trying to achieve.


from paraview.simple import Connect, LegacyVTKReader
from os import listdir

Connect('my_server', port)
location = '/my/remote/location/'

file_names = listdir(location).sort()
reader = LegacyVTKReader(FileNames=file_names)


Please let me know if it's at all possible to query the directory on the remote
side through an established connection.

Many thanks,
Robert
-- 
Seems like the famous poem of turbulence comes from Jonathan Swift
http://en.wikipedia.org/wiki/The_Siphonaptera
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Re: [Paraview] Remote rendering through reverse SSH breaks with a GLX error

2017-11-03 Thread Robert Sawko
Utkarsh,

Again, thanks again for the comment and sorry for missing the email. I am
checking my filter rules as this didn't get through to my inbox.

Your insight was quite right: it's all down to drivers. I've been working on
PV with EGL since then and I can get it all work under Ubuntu POWER8 NVIDIA
driver but not under RHEL. There seems to be a packaging problem in RHEL where
presumably an older or flawed version of EGL is shipped. I've been promised a
fix soon so I am waiting for this.

I've got access to two clusters with K80s and P100s and my intention is to run
EGL enabled PV on both of them. X-less config is ideal as I could make any node
act as a PV server. I'll keep you posted.

Robert
-- 
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Sorry, but I think p-values are important.
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Re: [Paraview] Python tracing doesn't work for opacity time frames?

2017-11-03 Thread Robert Sawko
Utkarsh,

Really sorry but this dropped off my radar. Thanks for raising an issue and
sharing this code snippet below.

Robert

> You can get access to the opacity track using the API similar to getting
> track for any other attribute as "Radius" for SPhere Source.
>
> a = GetAnimationTrack('Opacity', index=0, proxy=sphere1)
>
> Now you can add keyframes etc to the track.

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[Paraview] Specific OpenFOAM case crashes the server

2017-10-01 Thread Robert Sawko
Dear All,

I have been recently testing remote rendering in paraview and I seem to have
concocted a case which breaks remotely works locally. The case is an OpenFOAM
U-bend simulation and I am happy to share the files. They're about 61MB.

On the remote side I get:

pvserver: /.../viz/ParaView-v5.4.1/VTK/IO/Geometry/vtkOpenFOAMReader.cxx:3798: 
void vtkFoamEntryValue::ReadList(vtkFoamIOobject&): Assertion `"Label type not 
set!" && this->GetLabelType() != NO_LABEL_TYPE' failed.

On the local side it looks that I simply get disconnected which makes sense
seeing that the server core dumped.

I tried to remove all weirdness from this case and at the moment it is really
just a tet+quad mesh and some case files. If I open the case directly with the
client everything works.

I am really keen to solve it as when remote viz works, it's absolutely
brilliant. I would appreciate comments. Thanks.


A side note is that looks to me that PV OpenFOAM reader cannot handle
"included" files used by OpenFOAM.

Best wishes,
Robert
-- 
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[Paraview] Remote rendering through reverse SSH breaks with a GLX error

2017-09-28 Thread Robert Sawko
Dear Paraviewers,

I am trying to run Paraview in a client-server mode on a remote compute node
using a reverse SSH through the login node.

I have successfully worked out my port forwarding skulduggery and was able to
connect to a host which does NOT run X server. Inside my local client. I do get
an error

"Display is not accessible on the server side. Remote rendering
will be disabled"

This is to be expected on the node without X.

On the node with X running my client gets connected but then breaks with:

Waiting for client...
Connection URL: cs://pgc104:6
Accepting connection(s): pgc104:6
Client connected.
Xlib:  extension "GLX" missing on display ":0.0".
Xlib:  extension "GLX" missing on display ":0.0".
...
(core dumped)


Finally on the login node client-server works fine and rendering (I guess)
is done on the remote side as I don't get any errors. We have made sure that
xorg.conf on login and X-enabled compute node are the same.


My connection procedure:

local% ssh -L 6:localhost:6 login_node
login% bsub -R "select[hname=pgc104]" -Is /bin/bash
pgc104% ssh -N -R 6:localhost:6 login &
pgc104% DISPLAY=:0.0 pvserver -sp=6 --use-offscreen-rendering
local% paraview->connect to localhost:6

Same thing works on pgc304 which doesn't run X. Please let us know if you have
any suggestions.

Best wishes,
Robert
-- 
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Re: [Paraview] Paraview closes with a core dump

2017-02-23 Thread Robert Sawko
Mathieu,

Turned out that Intel was getting in the way... The integrated card was somehow
conflicting with the discrete NVidia card and I had to reconfigure my X
settings somewhat as described here:

https://bbs.archlinux.org/viewtopic.php?id=223435

This problem developed spontaneously though as I definitely had glxgears,
paraview etc working before, so I am not exactly sure core dumps suddenly. But
I am pleased that I got some more clarity on the way I am using my system.

Thanks for all your earlier suggestions.

Best wishes,
Robert
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Re: [Paraview] Paraview closes with a core dump

2017-02-22 Thread Robert Sawko

Thanks for looking into it, Mathieu.

>- Is your system up to date ?
It's quite up to date. See below.
$ uname -a
Linux avignon 4.9.9-1-ARCH #1 SMP PREEMPT Thu Feb 9 19:07:09 CET 2017 x86_64 
GNU/Linux

>- Are you running X ? Wayland ?
Yes, for X. Never heard of Wayland.

>- What DE/WM are you running ?
No DE, but Xmonad as WM.

>- What graphic card do you have ? With which drivers version ?
Nvidia Quadro. I've got nvidia driver version 378.13-1. There's a slightly
newer one in the repo.

>- What version of opengl is installed ? please provide glxinfo output.

$ glxinfo 
name of display: :0.0
Error: couldn't find RGB GLX visual or fbconfig

Oops... that looks like a problem. I could try downgrading opengl.

>- There should be some error message before the segfault, but we can't
>see any, did you removed them or are they missing ?

I haven't removed anything from the gdb output. Running paraview from bash is
core-dumps silently.

>- Can you check in your source that
>paraview/VTK/Rendering/OpenGL2/vtkXOpenGLRenderWindow.cxx:485 contains

Yes, these lines are there.

Robert
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Re: [Paraview] Paraview closes with a core dump

2017-02-22 Thread Robert Sawko
I was convinced I attached stack trace too. Please see core.dump file. It may
be a red herring but there are several references to libQt5Core there. I am
rebuilding with Qt5 now, but will also try a more minimal build with Qt4 later.

Thanks for quick reply.
Robert
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[Paraview] Paraview closes with a core dump

2017-02-22 Thread Robert Sawko
Hi,

This is Arch Linux user again. Parview no longer opens for me. It just ends
with a core dump (attached). It seems it's something to do with Arch Linux
forward looking policy of favouring QT5. I have specified in the compilation
to build with QT4 (see attached CMakeCache.txt), but on run it still picks
libQt5Core.so.

I will now try to rebuild with QT5 but there was a perspective issue with that
before.

Does anyone have any suggestions, please?

Thanks,
Robert
-- 
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http://en.wikipedia.org/wiki/Eden_Project


paraview_core_dump.tar.gz
Description: Binary data
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Re: [Paraview] [EXTERNAL] Re: Newer object always in front in Render View

2017-01-05 Thread Robert Sawko

Ok. Yes I have now recompiled 5.2 version with Qt4 and sane render view is here
again. I will try to come up with a fix for AUR paraview package.


By the way, I probably gave you wrong info on my renderers etc. I've now
noticed the info is available in Help->About and it reads: OpenGL Renderer:
Mesa DRI Intel(R) Haswell Mobile

Is that right? Considering I've got NVidia card should I be using a generic
driver?

Best wishes,
Robert
-- 
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Re: [Paraview] [EXTERNAL] Re: Newer object always in front in Render View

2017-01-04 Thread Robert Sawko

On this computer I have two PV installed. One from AUR and one compiled from
OpenFOAM third party directory. The OpenFOAM works fine. It does say "Legacy
Rendering Backend" in the title bar which may or may not be significant. The
computer is running NVidia drivers and the card is Quadro. But I am reproducing
this problem on another Arch machine with some Intel integrated graphics card.

I'll try now Alan's suggestion and download it from Kitware directly.

Robert
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Re: [Paraview] Newer object always in front in Render View

2017-01-04 Thread Robert Sawko
David,

Thanks for a quick reply. Tried with -dr and it's the same. I am attaching my
state file for spheres. It may help someone to reproduce.

I am running it on Arch Linux and paraview is taken from AUR. I am just
looking at the way the binary was generated and I see these options in
cmake

  cmake \
-DBUILD_SHARED_LIBS:BOOL=ON \
-DBUILD_TESTING:BOOL=OFF \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_C_COMPILER=mpicc \
-DCMAKE_CXX_COMPILER=mpicxx \
-DCMAKE_INSTALL_PREFIX:PATH=/usr \
-DCMAKE_VERBOSE_MAKEFILE:BOOL=OFF \
-DOSPRAY_INSTALL_DIR:PATH=/usr \
-DPARAVIEW_ENABLE_CGNS:BOOL=OFF \
-DPARAVIEW_ENABLE_FFMPEG:BOOL=ON \
-DPARAVIEW_ENABLE_PYTHON:BOOL=ON \
-DPARAVIEW_PYTHON_VERSION=2 \
-DPARAVIEW_QT_VERSION=5 \
-DPARAVIEW_USE_MPI:BOOL=ON \
-DPARAVIEW_USE_VISITBRIDGE:BOOL=ON \
-DPARAVIEW_USE_OSPRAY:BOOL=ON \
-DVISIT_BUILD_READER_CGNS:BOOL=OFF \
-DVTK_PYTHON_VERSION=2 \
-DVTK_QT_VERSION=5 \
-DVTK_RENDERING_BACKEND:STRING=OpenGL2 \
-DVTK_SMP_IMPLEMENTATION_TYPE:STRING=OpenMP \
-DVTK_USE_SYSTEM_HDF5:BOOL=OFF \
${VTK_USE_SYSTEM_LIB} \
../ParaView-v${_pkgver}

Does any of this look suspicious?

Robert
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[Paraview] Default opacity in ParaView version 5.1

2016-07-14 Thread Robert Sawko
Hello,

I noticed that the new version of ParaView displays only the boundaries
of an object in an opaque way. Previously, the default behaviour was to
display solid colours and "Opacity" slider provided some control. Also,
clearly only the boundaries are shown and internal mesh is invisible.
Is that an intentional change. Is there a way to revert to previous
behaviour and have boundaries displayed in solid colours.

I am using OpenFOAM Paraview reader, but a minimal example for me is to
display a cylinder from Sources.

Please let me know,
Robert
-- 
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UK

Tel: 00 44 01234 750111 ext: 5350
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[Paraview] States crash after using Plot Over Line

2012-02-03 Thread Robert Sawko
Dear All,

I seem to have a problem with the ParaView version 3.12.0-1190, 64
bit. The states work ok but the moment I add some Plot Over Line
filters reloading of the state fails with the message:
X Error: BadColor (invalid Colormap parameter) 12
 Major opcode: 1 (X_CreateWindow)
 Resource id:  0x5e1

and hangs ParaView completely. I am sure I was using Plot Over Line
together with states in the past.

I would be obliged for any comments.

Best wishes,
Robert

-- 
Robert Sawko

PhD student

Applied Mathematics and Computing Group

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Bedfordshire MK43 0AL

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[Paraview] [Ensight Gold format] Crash of temporal data

2010-02-05 Thread Robert Sawko
Hello Everybody!

I am struggling with a small and rather curious issue. I imported data
in Ensight format to paraview. Data describe 20 time steps of a very
simple simulation. I can view the first frame, however upon pressing
Next Frame ParaView crashed and treats me with a Segmentaion Fault
error on my command line.

The problem is curious because of the following observation. When I
start with viewing last frame I can trace the simulation backwards by
pressing Previous Frame.

I am running OpenSUSE 11.2 with KDE 4.3.1. I am running ParaView 3.7.0.

I can supply you with troublesome files. Alternatively could you
please provide me with some working Ensight files so that I can verify
that my Ensight files are all right.

Many thanks for any comments,
Robert
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Re: [Paraview] X Error: BadLength on OpenSUSE11.2

2010-01-28 Thread Robert Sawko
All right. I solved the issue. My graphic card drivers where not
properly installed. Re-installation of these have solved the problem
and now I have direct rendering again and can use volume.

Thanks for your hint.

Robert
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[Paraview] X Error: BadLength on OpenSUSE11.2

2010-01-26 Thread Robert Sawko
Dear All,

I was getting acquainted with ParaView features via tutorials but
suddenly my education was interrupted with a X Error. Whilst doing a
tutorial 2.8 from the 3.6 Version of The ParaView Tutorial and upon
clicking Volume Representation I am being propmpted with the following
message:

X Error: BadLength (poly request too large or internal Xlib length error) 16
  Extension:135 (Uknown extension)
  Minor opcode: 1 (Unknown request)
  Resource id:  0x5a002cc

And also:
paraview: xcb_io.c:176: process_responses: Assertion `!(req 
current_request  !(((long) (req-sequence) - (long)
(current_request)) = 0))' failed.
Aborted

Then ParaView crashes.

I am running  OpenSUSE 11.2 with KDE 4.3.1. My Qt library bears a
number 4.5.3. If anybody encountered similar issued I would earnestly
ask for some assistance.

Many thanks,
Robert
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Re: [Paraview] X Error: BadLength on OpenSUSE11.2

2010-01-26 Thread Robert Sawko
Thank you for your reply. This is the results of the command you suggested:

glxinfo | grep -i vendor
server glx vendor string: NVIDIA Corporation
client glx vendor string: SGI
OpenGL vendor string: NVIDIA Corporation

Robert
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[Paraview] QT_HELP_GENERATOR-NOTFOUND

2010-01-07 Thread Robert Sawko
Dear All,

I am trying to run compile ParaView on 64 bit openSUSE 11.2 with KDE
4.3.1. I was using this website as a reference
http://www.cmake.org/Wiki/ParaView:Build_And_Install. Unfortunately
after configuring the installation with ccmake I get
QT_HELP_GENERATOR-NOTFOUND in QT_HELP_GENERATOR variable. Executing
make ends up with an error:

[ 99%] Built target H5PartReader
[ 99%] Compiling Qt help project paraview.qhp
/bin/sh: QT_HELP_GENERATOR-NOTFOUND: command not found
make[2]: *** [Documentation/CMakeFiles/ParaViewOnlineHelp] Error 127
make[1]: *** [Documentation/CMakeFiles/ParaViewOnlineHelp.dir/all] Error 2

Could you let me know if you had any hints as to solve this problem? I
would be very much obliged for any assistance.

Kind regards,
Robert
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Re: [Paraview] QT_HELP_GENERATOR-NOTFOUND

2010-01-07 Thread Robert Sawko
Thanks for your reply.

 What version of Qt are you using?
My Qt version is 4.5.3.

Ensure that QT_HELP_GENERATOR is set to the qhelpgenerator executable.
Where can I find this one? Apparently ccmake cannot find
autumatically. Maybe it is not supplied with openSUSE Qt package. Is
there any way to do it manually?

Best wishes,
Robert
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Re: [Paraview] QT_HELP_GENERATOR-NOTFOUND

2010-01-07 Thread Robert Sawko
Thanks again for the hints. It was indeed in a different package.
Can't say exactly which one since I simply added all the qt4 packages
that borne the signature of Trolltech. make and make install work just
fine now. Thank you!

Robert
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