[Paraview] Some more information about ParaView 5.2.0 client/server connection problem

[张驭洲]

Hi Chuck,

I start the pvserver through vnc. On my rendering server, the output from "glxinfo | grep OpenGL" is as follow:

OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: Tesla C2050/PCIe/SSE2
OpenGL version string: 4.4.0 NVIDIA 331.67
OpenGL shading language version string: 4.40 NVIDIA via Cg compiler
OpenGL extensions:

And the output from "nvidia-smi" is:



On my PC, the output from "glxinfo | grep OpenGL" is:

OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce GT 730/PCIe/SSE2
OpenGL version string: 4.5.0 NVIDIA 375.20
OpenGL shading language version string: 4.50 NVIDIA
OpenGL extensions:

And the output from "nvidia-smi" is:



Actually I'm not very clear about the meaning of the outputs above. Hope they can give you enough information to help me get 5.2.0 run on my server. Waiting for your good news.

-Zhang
-----原始邮件-----
发件人: "Chuck Atkins" <chuck.atkins at kitware.com>
发送时间: 2016年12月29日 星期四
收件人: "张驭洲" <yzhzhang at ipe.ac.cn>
抄送: "ParaView Mailing List" <paraview at paraview.org>
主题: Re: ParaView 5.2.0 client/server connection problem


Hi Zhang,
 


X Error of failed request:  GLXBadContext

    Major opcode of failed request:  135 (GLX)

    Minor opcode of failed request:  5  (X_GLXMakeCurrent)

    Serial number of failed request:  28

    Current serial number in output stream:  28




This is an indication that pvserver is not able to access an X server.  How are you starting pvserver?  Is it over ssh, vnc, running it directly from the server's console, etc?  Does glxinfo work?  i.e. what's your output from "glxinfo | grep OpenGL"? In order to access the GPUs you'll either need to use a running X server or EGL, depending on the NVidia driver version.  What version fo the NVidia driver are you using?  eg:

$ nvidia-smi
Wed Dec 28 08:57:03 2016      
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 367.48                 Driver Version: 367.48                    |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  Tesla C2075         Off  | 0000:03:00.0     Off |                    0 |
| 30%   63C    P0    78W /  N/A |      0MiB /  5300MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+                                                                              



 

The options of VTK_RENDER_BACKEND:STRING are OpenGL,OpenGL2 and None. I don't no what's the difference between the first two options but the OpenGL version on my server is 4.4.0 and on my PC it's 4.5.0.



This is certainly a confusing option.  It's not actually referring the the version of OpenGL that's getting used but the version of VTK's OpenGL backend.  The OpenGL backend is the first generation of our renbdering backend and uses OpenGL v1.2.  The OpenGL2 backend is the second generation of our rendering backend and uses OpenGL v3.3.

 

Fontconfig warning: "/etc/fonts/conf.d/45-latin.conf", line 39: Having multiple <family> in <alias> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/45-latin.conf", line 56: Having multiple <family> in <alias> isn't supported and may not work as expected



These are an artifact of ParaView 5.2 using a newer fontconfig library than the system.  For reasons outside of the scope here,  it's not likely to get fixed.  However, it should go away when running on a newer Linux distro.  It's nothing to worry about and can be safely ignored.



- Chuck









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