[Paraview] Problems with Paraview 3.6.1 on cluster (client - server mode)

Mon Nov 9 11:34:10 EST 2009

By "usual error" do you mean the crash in the GL or pthreads library?  It could be that the environment in the non-master nodes is incorrect.

-Ken

On 11/6/09 9:26 AM, "myaccountmail9 myaccountmail9" <myaccountmail9 at gmail.com> wrote:

Hi ken, thanks again.

we recompiled again OSMesa library (only on the master node of our cluster; the libraries file are generated on a shared folder - /home/user/ParaView/Components/lib - visible on each node), then we recompiled Paraview with these libraries (and setting shared libraries=off in ccmake menu); now we are able to connect the client with pvserver provided that pvserver runs only on the master node.

If we run pvserver on two or more nodes with the command:

mpirun -x LD_LIBRARY_PATH=/home/user/ParaView/Components/lib -np 2 -machinefile NodesList pvserver --use-offscreen-rendering

we always get the usual error when we try to connect the client with the server

Must X server run on each node? Currently X server is not running on any node (if we execute "pidof X" we obtain nothing) and DISPLAY variable is not set, but we can connect the client with the master node...

Have you any idea? Can you help us?

Thank you very much
Luis

2009/10/29 Moreland, Kenneth <kmorel at sandia.gov>
(Responding back to the ParaView list.)

These symbols should be defined in the GL library that is part of Mesa.  You should have a library like /home/myuser/TempOSMesa/Mesa-7.6/lib/libGL.so.  That is where the symbols should be defined.  libOSMesa.so simply references those libraries.  It is because the symbols cannot be found in the GL library that you are getting the error.  You can use the 'nm' command to query what symbols are defined are what are required.

-Ken

On 10/28/09 2:16 AM, "myaccountmail9 myaccountmail9" <myaccountmail9 at gmail.com <http://myaccountmail9@gmail.com> > wrote:

It sounds like you are still linking to the system OpenGL libraries somehow.  Those symbols should be defined in the libGL.so that is built with Mesa (whereas the /usr/lib/libGL.so on your system probably does not have them).

Hi Ken,
thanks again.

Looking the errors such as:

"home/myuser/TempOSMesa/Mesa-7.6/lib/libOSMesa.so: undefined reference to `_mesa_free_context_data'"

I believe those symbols must be defined in libOSMesa.so library and not in /usr/lib/libGL.so library.

In fact, if we install OSMessa using Debian packages we can compile ParaView, but we can't connect client and server; the error always is similar to:

ParaView3/Servers/Common/vtkServerConnection.cxx, line 67
vtkServerConnection (0x3182220): Server Connection Closed!

Executing with: 0
*** Process received signal ***
Signal: Segmentation fault (11)
Signal code:  (128)
Failing at address: (nil)
[ 0] /lib/libpthread.so.0 [0x7f4fc6536a80]
[ 1] /usr/lib/libGL.so.1(glBlendFuncSeparateEXT+0x16) [0x7f4fc7bc12e6]
*** End of error message ***
Segmentation fault

If instead we compile OSMesa ourselves we can't compile ParaView: I believe that something went wrong compiling OSMesa (some simbols aren't present in libOSMesa.so created), but I don't know if compiling OSMesa ourselves can help us to resolve our problem.

We also tried to install on our cluster ParaView 3.6.1already compiled (downloaded from http://www.paraview.org/paraview/resources/software.html) and it works: we can establish client-server connection.

But if we try to run more 2 or more pvserver instances on the same node (mpirun -np 2 pvserver), we have this error:

"vtkProcessModuleConnectionManager (0x23d6da0): Failed to set up server socket"

 Did you do a clean build of ParaView (that is, delete the binary directory and start over from scratch)?  If you just tried to change some CMake variables in an existing build, you may have some stale libraries built.

We did "make clean".

You should also check to make sure that the executables being built are linking to your compiled Mesa libraries instead of the system libraries.  You can check this with the ldd command.  You may have to set your LD_LIBRARY_PATH environment variable to point to /home/myuser/TempOSMesa/Mesa-7.6.

We also tried to set LD_LIBRARY_PATH.

Can you help us?
Luis

-Ken

On 10/23/09 3:27 AM, "myaccountmail9 myaccountmail9" <myaccountmail9 at gmail.com <http://myaccountmail9@gmail.com>  <http://myaccountmail9@gmail.com> > wrote:

Hi Ken,

thank you.
We compiled Mesa with:

./configure --enable-gl-osmesa --disable-gallium
make
make install

and we configured Paraview with:

OPENGL_INCLUDE_DIR=/home/myuser/TempOSMesa/Mesa-.6/include
OPENGL_gl_LIBRARY=/home/myuser/TempOSMesa/Mesa-7.6/lib/libGL.so
OPENGL_glu_LIBRARY=/home/myuser/TempOSMesa/Mesa-7.6/lib/libGLU.so
OPENGL_xmesa_INCLUDE_DIR=/home/myuser/TempOSMesa/Mesa-7.6/include
OSMESA_INCLUDE_DIR=/home/myuser/TempOSMesa/Mesa-7.6/include
OSMESA_LIBRARY=/home/myuser/TempOSMesa/Mesa-7.6/lib/libOSMesa.so

but we have many error compiling Paraview; for example:

/home/myuser/TempOSMesa/Mesa-7.6/lib/libOSMesa.so: undefined reference to `_mesa_free_context_data'
/home/myuser/TempOSMesa/Mesa-7.6/lib/libOSMesa.so: undefined reference to `_mesa_get_current_context'
/home/myuser/TempOSMesa/Mesa-7.6/lib/libOSMesa.so: undefined reference to `_mesa_enable_2_1_extensions'

Do you think there is something went wrong installing Mesa?
Can you help us?

Thank you again.
Luis

2009/10/21 Moreland, Kenneth <kmorel at sandia.gov <http://kmorel@sandia.gov>  <http://kmorel@sandia.gov> >
Not really, but I would consider trying downloading the Mesa source and compiling it myself.  Since the error is happening somewhere in the OpenGL libraries (and is not really being replicated on other user's platforms), the only cause I can come up with is a problem with the libraries (and mismatched libraries is the most common problem).  Compiling Mesa is actually pretty easy, so it is worth taking the effort to check.

-Ken

On 10/21/09 12:54 AM, "myaccountmail9 myaccountmail9" <myaccountmail9 at gmail.com <http://myaccountmail9@gmail.com>  <http://myaccountmail9@gmail.com>  <http://myaccountmail9@gmail.com> > wrote:

Hi Ken,
thank you for your reply.
No, we didn't compile OSMesa ourselves, but we installed OSMesa library on each node downloading the .deb packages with:

apt-get install libosmesa6
apt-get install libosmesa6-dev

Have you got any other idea?
Thank you again.
Luis

2009/10/20 Moreland, Kenneth <kmorel at sandia.gov <http://kmorel@sandia.gov>  <http://kmorel@sandia.gov>  <http://kmorel@sandia.gov> >
Could it be a problem with mismatched libraries?  I notice in the error below that it occurs in /usr/lib/libGL.so.1.  This is a system library.  Did you compile OSMesa yourself?  If so, then you should not be using the system GL libraries; you should be using the libraries that you compiled when you also generated the OSMesa library.

-Ken

On 10/20/09 1:56 AM, "myaccountmail9 myaccountmail9" <myaccountmail9 at gmail.com <http://myaccountmail9@gmail.com>  <http://myaccountmail9@gmail.com>  <http://myaccountmail9@gmail.com>  <http://myaccountmail9@gmail.com> > wrote:

Hi,
we have a Linux (Debian) cluster without gpu and we have a big problem using Paraview 3.6.1in client - server mode.
The server has been compiled with OSMesa library and following the instructions reported here (in particular the section "OSMesa support"):

http://www.itk.org/Wiki/Setting_up_a_ParaView_Server

If we try to connect the client started with the command:

paraview

and the server, started with the command:

pvserver --use-offscreen-rendering

we must disable the checkbox "Remote rendering threshold" (but this causes bad performances) in the client settings (Edit -> Settings -> Render view -> Server), othervise Paraview crashes after loading a big input or performing some operation such us changing "outline" to "wireframe"...

The error always is (similar to):

ParaView3/Servers/Common/vtkServerConnection.cxx, line 67
vtkServerConnection (0x3182220): Server Connection Closed!

Executing with: 0
*** Process received signal ***
Signal: Segmentation fault (11)
Signal code:  (128)
Failing at address: (nil)
[ 0] /lib/libpthread.so.0 [0x7f4fc6536a80]
[ 1] /usr/lib/libGL.so.1(glBlendFuncSeparateEXT+0x16) [0x7f4fc7bc12e6]
*** End of error message ***
Segmentation fault

This error also occurs if we start client and server logging directly (without any ssh connection) on the master node; on master node X is running and we can execute the test:

mpirun -np 4 /usr/X11R6/bin/glxgears

So, it doen't seem a problem regarding X connection and permission...

Moreover, executing the test:

/ParaView/ParaView-bin$ ctest -I ,,10

we obtain some segmentation fault, but the log file can't give any useful information.

111/475 Testing TestGradientBackground        ***Exception: SegFault
121/475 Testing TestOSConeCxx                 ***Exception: SegFault
131/475 Testing TestTranslucentLUTDepthPeeling***Exception: SegFault
141/475 Testing BoxWidget                     ***Exception: SegFault
151/475 Testing TestParallelopipedWidget      ***Exception: SegFault

..

On our local machine with gpu 100% test passed, and we haven't any problem to connect client and server on that machine.

MPI version is: mpirun (Open MPI) 1.2.7rc2
OSMesa version is: 7.0.3-7

We searched on google, on Paraview wiki... without any succes: can you help us please?

If you need more information let us now

Thank you very much

Luis

   ****      Kenneth Moreland
    ***      Sandia National Laboratories
***********
*** *** ***  email: kmorel at sandia.gov <http://kmorel@sandia.gov>  <http://kmorel@sandia.gov>  <http://kmorel@sandia.gov>  <http://kmorel@sandia.gov>
**  ***  **  phone: (505) 844-8919
    ***      web:   http://www.cs.unm.edu/~kmorel <http://www.cs.unm.edu/%7Ekmorel>  <http://www.cs.unm.edu/%7Ekmorel>  <http://www.cs.unm.edu/%7Ekmorel>  <http://www.cs.unm.edu/%7Ekmorel>

   ****      Kenneth Moreland
    ***      Sandia National Laboratories
***********
*** *** ***  email: kmorel at sandia.gov <http://kmorel@sandia.gov>  <http://kmorel@sandia.gov>  <http://kmorel@sandia.gov>
**  ***  **  phone: (505) 844-8919
    ***      web:   http://www.cs.unm.edu/~kmorel <http://www.cs.unm.edu/%7Ekmorel>  <http://www.cs.unm.edu/%7Ekmorel>  <http://www.cs.unm.edu/%7Ekmorel>

   ****      Kenneth Moreland
    ***      Sandia National Laboratories
***********
*** *** ***  email: kmorel at sandia.gov <http://kmorel@sandia.gov>  <http://kmorel@sandia.gov>
**  ***  **  phone: (505) 844-8919
    ***      web:   http://www.cs.unm.edu/~kmorel <http://www.cs.unm.edu/%7Ekmorel>  <http://www.cs.unm.edu/%7Ekmorel>

   ****      Kenneth Moreland
    ***      Sandia National Laboratories
***********
*** *** ***  email: kmorel at sandia.gov <http://kmorel@sandia.gov>
**  ***  **  phone: (505) 844-8919
    ***      web:   http://www.cs.unm.edu/~kmorel <http://www.cs.unm.edu/%7Ekmorel>

   ****      Kenneth Moreland
    ***      Sandia National Laboratories
***********
*** *** ***  email: kmorel at sandia.gov
**  ***  **  phone: (505) 844-8919
    ***      web:   http://www.cs.unm.edu/~kmorel

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