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List: paraview
Subject: Re: [Paraview] floating point exception error when doing slice filter (only happen when running pvse
From: Hong Yi <hongyi () renci ! org>
Date: 2013-02-27 22:09:50
Message-ID: 65F8B323A072504ABFC5D3D8751910514B1F190C () MAIL-MBX2 ! ad ! renci ! org
[Download RAW message or body]
Hi Burlen,
Thank you so much for the information. Disabling FPE indeed fixed the problem. Now I \
can do slicing and clipping without problem :) I don't remember explicitly enabling \
FPE when building ParaView on the cluster, so not sure whether it was on by default. \
In any case, this problem is solved after I disabled FPE. Thanks again for your \
helpful information!
Best,
Hong
From: Burlen Loring [mailto:bloring@lbl.gov]
Sent: Wednesday, February 27, 2013 3:39 PM
To: Hong Yi
Cc: paraview@paraview.org
Subject: Re: [Paraview] floating point exception error when doing slice filter (only \
happen when running pvserver remotely in parallel)
Hi Hong,
It looks like you've found a bug in ParaView, there probably should be a check \
preventing this division when the render window is empty. However, it's likely a non \
issue when FPEs are disabled, which I believe is the default. Could you search the \
vtkPVConfig.h file (found in build/install dir) for PARAVIEW_ENABLE_FPE? If this is \
defined during the build then PV will enable FPE's when it starts. If that's the case \
in your build, then a quick fix for you would be to rebuild with that feature \
disabled. If that's not the case in your build, FPE's must be being enabled by a \
library that's being linked in. You may have to inquire about this with your sys \
admins, if they know of any such library.
Burlen
On 02/27/2013 10:01 AM, Hong Yi wrote:
OK, now I know why the floating point exception is raised after looking at the values \
of those variables and the source code. Specifically, the whole statement it fails is \
actually the following: Vx = 2.0 * (this->DisplayPoint[0] - sizex * \
Viewport[0])/(sizex*(this->Viewport[2]-this->Viewport[0])) - 1.0, where the \
denominator has a value of 0 when it fails: sizex = 0, this->Viewport[2]=1, and \
this->Viewport[0]=0, which results in "divide by zero" floating point exception. The \
key here is the sizex value which should not be zero, and sizex is equal to the first \
component of this->VTKWindow->GetSize(). So this VTKWindow gets a size of zero which \
results in this floating point exception. I am puzzled on why this could be the case \
since other filters like isocontouring does not have this problem. Hopefully someone \
in the list could provide some insight on this problem.
Thanks,
Hong
From: paraview-bounces@paraview.org<mailto:paraview-bounces@paraview.org> \
[mailto:paraview-bounces@paraview.org] On Behalf Of Hong Yi
Sent: Wednesday, February 27, 2013 12:26 PM
To: paraview@paraview.org<mailto:paraview@paraview.org>
Subject: Re: [Paraview] floating point exception error when doing slice filter (only \
happen when running pvserver remotely in parallel)
Just some follow-up information I hope to shed some light on this problem. I used pdb \
to debug pvserver running with mpirun on the server and found this floating point \
exception error happens on the line below:
Program received signal SIGFPE, Arithmetic exception.
0x00002ad33e95021b in vtkViewport::DisplayToView (this=0x43a2670)
at /home/hyi2/Download/ParaView-3.14.1-Source/VTK/Filtering/vtkViewport.cxx:204
204 (sizex*(this->Viewport[2]-this->Viewport[0])) - 1.0;
which puzzles me since I cannot imagine why this could cause floating point exception \
(I cannot see possibility of "divide by zero" or other possible arithmetic \
exception). I did try to check or uncheck "Remote Render Threshold" checkbox both \
ways which results in the same failure in the same statement as noted above. Also, \
isocontouring filter runs fine with correct visual output, but slicing and clipping \
filters result in same errors as noted above.
Hope this additional debug info could shed some light and trigger some idea on what \
could be the problem. Perhaps there is a possibility it is NVidia driver related? But \
in my configuration, HPC server uses MESA software rendering and my client NVidia \
driver is up to date with Geforce GTX580 graphics card.
Thanks for any ideas on what could cause this problem!
Hong
________________________________
From: paraview-bounces@paraview.org<mailto:paraview-bounces@paraview.org> \
[paraview-bounces@paraview.org<mailto:paraview-bounces@paraview.org>] on behalf of \
Hong Yi [hongyi@renci.org<mailto:hongyi@renci.org>]
Sent: Friday, February 22, 2013 12:27 PM
To: paraview@paraview.org<mailto:paraview@paraview.org>
Subject: [Paraview] floating point exception error when doing slice filter (only \
happen when running pvserver remotely in parallel) I built ParaView server with MPI \
on a HPC cluster with OSMesa support since the cluster does not have graphics \
hardware. The MPI compiler used to build ParaView is mpich2/gnu412x64/1.4-shared. \
Paraview server built successfully on the cluster without any error. I can \
successfully connect to the pvserver running on multiple nodes remotely via Paraview \
client running on my local desktop, load data in, and do gradient and vorticity \
computation, and look at isosurfaces without problems. However, when I do slice \
filter to look at one slice, as soon as I click on slice filter, pvserver aborts with \
floating point exception error. It is not the data problem because I can do slice \
filter without problem for the same data if I run builtin Paraview server/client \
locally, so the problem only occurs when the local client connects to pvserver \
running remotely on multiple nodes (or on one node) via mpirun. So far, the slice \
filter is the only filter I have run into with this floating point exception error \
raised by the remote pvserver. The other filters such as gradient of unstructured \
data, calculator of vorticity, isocontour all run successfully with correct results \
produced. Any idea on what could cause this problem is very much appreciated!
Thanks,
Hong
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<p class="MsoNormal"><span style="color:#1F497D">Hi Burlen,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thank you so much for the \
information. Disabling FPE indeed fixed the problem. Now I can do slicing and \
clipping without problem </span><span \
style="font-family:Wingdings;color:#1F497D">J</span><span style="color:#1F497D"> I \
don’t remember explicitly enabling FPE when building ParaView on the cluster, \
so not sure whether it was on by default. In any case, this problem is solved after \
I disabled FPE. Thanks again for your helpful information!<o:p></o:p></span></p> <p \
class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p> <p \
class="MsoNormal"><span style="color:#1F497D">Best,<o:p></o:p></span></p> <p \
class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p> <p \
class="MsoNormal"><span style="color:#1F497D">Hong<o:p></o:p></span></p> <p \
class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p> <p \
class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p> <p \
class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p> <div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span \
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span \
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"> \
Burlen Loring [mailto:bloring@lbl.gov] <br>
<b>Sent:</b> Wednesday, February 27, 2013 3:39 PM<br>
<b>To:</b> Hong Yi<br>
<b>Cc:</b> paraview@paraview.org<br>
<b>Subject:</b> Re: [Paraview] floating point exception error when doing slice filter \
(only happen when running pvserver remotely in parallel)<o:p></o:p></span></p> </div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Hi Hong,<br>
<br>
It looks like you've found a bug in ParaView, there probably should be a check \
preventing this division when the render window is empty. However, it's likely a non \
issue when FPEs are disabled, which I believe is the default. Could you search the \
vtkPVConfig.h file (found in build/install dir) for PARAVIEW_ENABLE_FPE? If this is \
defined during the build then PV will enable FPE's when it starts. If that's the case \
in your build, then a quick fix for you would be to rebuild with that feature \
disabled. If that's not the case in your build, FPE's must be being enabled by a \
library that's being linked in. You may have to inquire about this with your sys \
admins, if they know of any such library.<br> <br>
Burlen<br>
<br>
On 02/27/2013 10:01 AM, Hong Yi wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="color:#1F497D">OK, now I know why the floating \
point exception is raised after looking at the values of those variables and the \
source code. Specifically, the whole statement it fails is actually the \
following:</span><o:p></o:p></p> <p class="MsoNormal"><span style="color:#1F497D">Vx \
= 2.0 * (this->DisplayPoint[0] - sizex * Viewport[0])/</span><span \
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">(sizex*(this->Viewport[2]-this->Viewport[0])) \
- 1.0,</span><span style="color:#1F497D"> where the denominator has a value of 0 \
when it fails: sizex = 0, this->Viewport[2]=1, and this->Viewport[0]=0, which \
results in “divide by zero” floating point exception. The key here is the \
sizex value which should not be zero, and sizex is equal to the first component of \
this->VTKWindow->GetSize(). So this VTKWindow gets a size of zero which results \
in this floating point exception. I am puzzled on why this could be the case since \
other filters like isocontouring does not have this problem. Hopefully someone in \
the list could provide some insight on this problem.</span><o:p></o:p></p> <p \
class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p> <p \
class="MsoNormal"><span style="color:#1F497D">Thanks,</span><o:p></o:p></p> <p \
class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p> <p \
class="MsoNormal"><span style="color:#1F497D">Hong</span><o:p></o:p></p> <p \
class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p> <p \
class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p> <div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span \
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span \
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <a \
href="mailto:paraview-bounces@paraview.org">paraview-bounces@paraview.org</a> [<a \
href="mailto:paraview-bounces@paraview.org">mailto:paraview-bounces@paraview.org</a>] \
<b>On Behalf Of </b>Hong Yi<br> <b>Sent:</b> Wednesday, February 27, 2013 12:26 \
PM<br> <b>To:</b> <a \
href="mailto:paraview@paraview.org">paraview@paraview.org</a><br> <b>Subject:</b> Re: \
[Paraview] floating point exception error when doing slice filter (only happen when \
running pvserver remotely in parallel)</span><o:p></o:p></p> </div>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span \
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Just \
some follow-up information I hope to shed some light on this problem. I used pdb to \
debug pvserver running with mpirun on the server and found this floating point \
exception error happens on the line below:<br> <br>
Program received signal SIGFPE, Arithmetic exception.<br>
0x00002ad33e95021b in vtkViewport::DisplayToView (this=0x43a2670)<br>
at \
/home/hyi2/Download/ParaView-3.14.1-Source/VTK/Filtering/vtkViewport.cxx:204<br> \
204 \
(sizex*(this->Viewport[2]-this->Viewport[0])) - 1.0;<br> <br>
which puzzles me since I cannot imagine why this could cause floating point exception \
(I cannot see possibility of "divide by zero" or other possible arithmetic \
exception). I did try to check or uncheck "Remote Render Threshold" \
checkbox both ways which results in the same failure in the same statement as noted \
above. Also, isocontouring filter runs fine with correct visual output, but slicing \
and clipping filters result in same errors as noted above.<br> <br>
Hope this additional debug info could shed some light and trigger some idea on what \
could be the problem. Perhaps there is a possibility it is NVidia driver related? But \
in my configuration, HPC server uses MESA software rendering and my client NVidia \
driver is up to date with Geforce GTX580 graphics card. <br>
<br>
Thanks for any ideas on what could cause this problem!<br>
<br>
Hong <br>
<br>
<br>
</span><o:p></o:p></p>
<div>
<div class="MsoNormal" align="center" style="text-align:center"><span \
style="font-size:12.0pt"> <hr size="2" width="100%" align="center">
</span></div>
<div id="divRpF39872">
<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span \
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span \
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <a \
href="mailto:paraview-bounces@paraview.org">paraview-bounces@paraview.org</a> [<a \
href="mailto:paraview-bounces@paraview.org">paraview-bounces@paraview.org</a>] on \
behalf of Hong Yi [<a href="mailto:hongyi@renci.org">hongyi@renci.org</a>]<br> \
<b>Sent:</b> Friday, February 22, 2013 12:27 PM<br> <b>To:</b> <a \
href="mailto:paraview@paraview.org">paraview@paraview.org</a><br> <b>Subject:</b> \
[Paraview] floating point exception error when doing slice filter (only happen when \
running pvserver remotely in parallel)</span><o:p></o:p></p> </div>
<div>
<div>
<p class="MsoNormal">I built ParaView server with MPI on a HPC cluster with OSMesa \
support since the cluster does not have graphics hardware. The MPI compiler used to \
build ParaView is mpich2/gnu412x64/1.4-shared. Paraview server built successfully on \
the cluster without any error. I can successfully connect to the pvserver running on \
multiple nodes remotely via Paraview client running on my local desktop, load data \
in, and do gradient and vorticity computation, and look at isosurfaces without \
problems. However, when I do slice filter to look at one slice, as soon as I click \
on slice filter, pvserver aborts with floating point exception error. It is not the \
data problem because I can do slice filter without problem for the same data if I run \
builtin Paraview server/client locally, so the problem only occurs when the local \
client connects to pvserver running remotely on multiple nodes (or on one node) via \
mpirun. So far, the slice filter is the only filter I have run into with this \
floating point exception error raised by the remote pvserver. The other filters such \
as gradient of unstructured data, calculator of vorticity, isocontour all run \
successfully with correct results produced. Any idea on what could cause this problem \
is very much appreciated!<o:p></o:p></p> <p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Hong<o:p></o:p></p>
</div>
</div>
</div>
</div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New \
Roman","serif""><br> <br>
<br>
<o:p></o:p></span></p>
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<pre>Please keep messages on-topic and check the ParaView Wiki at: <a \
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</blockquote>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New \
Roman","serif""><o:p> </o:p></span></p> </div>
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