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You may need to start an xserver before starting up pvserver. I had
set this up for a UT system a long time ago. On that system there
were 8 gpus, when someone wanted to use ParaView we had to first ask
the scheduler for a gpu, then run xinit to bring the x server up on
the display associated with the gpu assigned to us. details of that
set up are here<br>
<a class="moz-txt-link-freetext" href="https://github.com/burlen/pvserver-configs/blob/master/servers/nautilus/3.10.0-x/start_pvserver-x.qsub">https://github.com/burlen/pvserver-configs/blob/master/servers/nautilus/3.10.0-x/start_pvserver-x.qsub</a><br>
Of course this system is not a workstation, and thus has no option
to log in directly. I do not know how the above would need to be
tweaked to work on workstation configurations...<br>
<br>
On 03/15/2018 11:06 AM, Chris Coutinho wrote:<br>
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<p class="MsoPlainText">I'm again having this issue where I
can't access the GPU unless someone is logged into the
computer and in an active X session. Adding the appropriate
users to the 'video' group makes it possible that I can access
the GPU from
<i>another</i> user that is also in the video group, but at
least one user needs to be logged in. If I restart the machine
then I’m out of the luck, and I get the ‘can't open the
display’ error.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">I was assuming that the computer would
just need to be turned on to be able to connect to it
remotely, and hopefully I’m missing something here.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><span lang="NL">Met vriendlijke groet,<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="NL">REDstack BV<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="NL"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="NL">Chris Coutinho<o:p></o:p></span></p>
<p class="MsoPlainText">Onderzoeker/Data analist<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">-----Original Message-----<br>
From: ParaView [<a class="moz-txt-link-freetext" href="mailto:paraview-bounces@public.kitware.com">mailto:paraview-bounces@public.kitware.com</a>] On
Behalf Of Chris Coutinho<br>
Sent: vrijdag 9 maart 2018 21:49<br>
To: Burlen Loring <a class="moz-txt-link-rfc2396E" href="mailto:burlen.loring@gmail.com"><burlen.loring@gmail.com></a>;
<a class="moz-txt-link-abbreviated" href="mailto:paraview@public.kitware.com">paraview@public.kitware.com</a><br>
Subject: Re: [Paraview] Utilizing Server GPU from an external
command</p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">[This sender failed our fraud detection
checks and may not be who they appear to be. Learn about
spoofing at
<a moz-do-not-send="true"
href="http://aka.ms/LearnAboutSpoofing"><span
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<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">I spoke too soon, apparently my issue
was that the users were not part of the 'video' group. After
adding the various users to the video group the problem is
gone.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Met vriendlijke groet,<o:p></o:p></p>
<p class="MsoPlainText">REDstack BV<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Chris Coutinho<o:p></o:p></p>
<p class="MsoPlainText">Onderzoeker/Data analist<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">-----Original Message-----<o:p></o:p></p>
<p class="MsoPlainText">From: Chris Coutinho<o:p></o:p></p>
<p class="MsoPlainText">Sent: vrijdag 9 maart 2018 21:18<o:p></o:p></p>
<p class="MsoPlainText">To: Chris Coutinho <<a
moz-do-not-send="true" href="mailto:c.coutinho@redstack.nl"><span
style="color:windowtext;text-decoration:none">c.coutinho@redstack.nl</span></a>>;
Burlen Loring <<a moz-do-not-send="true"
href="mailto:burlen.loring@gmail.com"><span
style="color:windowtext;text-decoration:none">burlen.loring@gmail.com</span></a>>;
<a moz-do-not-send="true"
href="mailto:paraview@public.kitware.com"><span
style="color:windowtext;text-decoration:none">paraview@public.kitware.com</span></a><o:p></o:p></p>
<p class="MsoPlainText">Subject: RE: [Paraview] Utilizing Server
GPU from an external command<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">I'm running into some other trouble
related to accessing the remote server. I'm able to
successfully use the remote GPU from a client when the ssh
user is also logged into the machine and in a X session
(specifically Gnome).<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Is it possible to access the remote GPU
without being logged in as the same user that is doing the ssh
remote connection?<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Met vriendlijke groet,<o:p></o:p></p>
<p class="MsoPlainText">REDstack BV<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Chris Coutinho<o:p></o:p></p>
<p class="MsoPlainText">Onderzoeker/Data analist<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">-----Original Message-----<o:p></o:p></p>
<p class="MsoPlainText">From: ParaView [<a
moz-do-not-send="true"
href="mailto:paraview-bounces@public.kitware.com"><span
style="color:windowtext;text-decoration:none">mailto:paraview-bounces@public.kitware.com</span></a>]
On Behalf Of Chris Coutinho<o:p></o:p></p>
<p class="MsoPlainText">Sent: vrijdag 9 maart 2018 14:25<o:p></o:p></p>
<p class="MsoPlainText">To: Burlen Loring <<a
moz-do-not-send="true" href="mailto:burlen.loring@gmail.com"><span
style="color:windowtext;text-decoration:none">burlen.loring@gmail.com</span></a>>;
<a moz-do-not-send="true"
href="mailto:paraview@public.kitware.com"><span
style="color:windowtext;text-decoration:none">paraview@public.kitware.com</span></a><o:p></o:p></p>
<p class="MsoPlainText">Subject: Re: [Paraview] Utilizing Server
GPU from an external command<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">[This sender failed our fraud detection
checks and may not be who they appear to be. Learn about
spoofing at
<a moz-do-not-send="true"
href="http://aka.ms/LearnAboutSpoofing"><span
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<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Thanks for the explanation Burlen,<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">It was indeed an issue with xhost as you
alluded to. On the server I added my user to the list of
authorized clients:<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"> xhost +SI:localhost:<user><o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Another point that I need to do was
remove the Mesa library from the server, which was probably on
the system because the nvidia drivers were installed later.
After removing the Mesa library, adding my user to the
authorized clients for xhost, and appending the DISPLAY
variable to my pvserver command fixes the problem that I
originally had.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Here's my current working command:<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"> ssh <user>@<server>
DISPLAY=:0.0 /usr/local/bin/pvserver --server-port=11111
--client-host=<client> --use-offscreen-rendering<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">I wasn't able to get reverse connection
to work correctly, so I removed that argument from the
command, It's not entirely clear to me why I would need it.
From the documentation it seems like a requirement if the
client and server are on separate sides of a firewall. That's
not the case for me and it works without.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Thanks again for your quick response.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Met vriendlijke groet,<o:p></o:p></p>
<p class="MsoPlainText">REDstack BV<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Chris Coutinho<o:p></o:p></p>
<p class="MsoPlainText">Onderzoeker/Data analist<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">From: Burlen Loring [<a
moz-do-not-send="true" href="mailto:burlen.loring@gmail.com"><span
style="color:windowtext;text-decoration:none">mailto:burlen.loring@gmail.com</span></a>]<o:p></o:p></p>
<p class="MsoPlainText">Sent: vrijdag 9 maart 2018 00:10<o:p></o:p></p>
<p class="MsoPlainText">To: Chris Coutinho <<a
moz-do-not-send="true" href="mailto:c.coutinho@redstack.nl"><span
style="color:windowtext;text-decoration:none">c.coutinho@redstack.nl</span></a>>;
<a moz-do-not-send="true"
href="mailto:paraview@public.kitware.com"><span
style="color:windowtext;text-decoration:none">paraview@public.kitware.com</span></a><o:p></o:p></p>
<p class="MsoPlainText">Subject: Re: [Paraview] Utilizing Server
GPU from an external command<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Hi Chris,<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">You are right "ssh -X" sends X11
commands back to the client. that is not what you want, so do
not use -X option in your ssh command.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Assuming that an X server is running on
the server in question (sounds like it is), there are 2
additional things that you need to make this work.<o:p></o:p></p>
<p class="MsoPlainText">1. Your ssh user needs to be allowed to
make connections to the X server 2. You need to tell programs
which display to use.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">To see if your user can make connections
to the X server:<o:p></o:p></p>
<p class="MsoPlainText">ssh into the server. run "DISPLAY=:0.0
xhost". If this command succeeds it will print out the current
access control list. You should see your user name. If that is
the case then you should be all set. If it fails it may say
something about "no protocol" and "can't open the display" or
something similar. If it fails then you'll need to add your
user to the access control list. See man page of xhost command
for details.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">To tell a program which display to use
set the DISPLAY environment variable. For instance if your
user can make connections to X server as described above you
should be able to run stuff like "ssh user@server DISPLAY=:0.0
glxinfo". With the PV client in reverse connection mode
something like this may work for you ssh -R N:localhost:N
user@server DISPLAY=:0.0 mpiexec -np 8 pvserver
--server-port=N --reverse-connection Burlen On 03/08/2018
09:13 AM, Chris Coutinho wrote:<o:p></o:p></p>
<p class="MsoPlainText">Hello ParaView users,<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">In short:<o:p></o:p></p>
<p class="MsoPlainText">I'm having an issue with utilizing a
servers graphics card via ssh. When starting the pvserver
manually from the server I don't experience any problems, but
attempting to start a pvserver remotely from my client through
ssh, I run into problems. I am new to configuring ssh and
don't really know what the root of my problem is.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">The problem:<o:p></o:p></p>
<p class="MsoPlainText">I installed ParaView 5.4.1 from source
(tags/v5.4.1) with MPI support enabled on an OpenSUSE Leap
42.3 workstation, with the goal of accessing this server from
a Windows (laptop) client within a VPN network. The client
laptop has the identical The server has a single Nvidia
graphics card installed (Quadro K2200), when I start the
server manually on the server I'm able to connect to it from
the client and utilize the server GPU; however, when sending
the same pvserver command through ssh via the client, I get
the 'Display is not accessible on the server side' error.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">To start the pvserver manually from the
server itself I execute a command similar to this:<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"> mpiexec -np 8
/usr/local/bin/pvserver --server-port=11111
--client-host=<myclient> --use-offscreen-rendering<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">After I execute this command from the
server, I've been able to confirm that the client is using the
server's graphics card by looking at the output of
`nvidia-smi`<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">My remote connection string looks like
this:<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"> ssh <user>@<server>
mpiexec -np 8 /usr/local/bin/pvserver --server-port=11111
--client-host=<myclient> --use-offscreen-rendering<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Indeed, after connecting to my remote
server using the remote connection via the client, I saw that
there was no utilization of the graphics card via
`nvidia-smi`.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Here is the output of `glxgears` related
to OpenGL from the server:<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">```<o:p></o:p></p>
<p class="MsoPlainText">$ glxinfo | grep -i opengl<o:p></o:p></p>
<p class="MsoPlainText">OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: Quadro K2200/PCIe/SSE2 OpenGL core
profile version string: 4.5.0 NVIDIA 390.25 OpenGL core
profile shading language version string: 4.50 NVIDIA OpenGL
core profile context flags: (none) OpenGL core profile profile
mask: core profile OpenGL core profile extensions:<o:p></o:p></p>
<p class="MsoPlainText">OpenGL version string: 4.6.0 NVIDIA
390.25 OpenGL shading language version string: 4.60 NVIDIA
OpenGL context flags: (none) OpenGL profile mask: (none)
OpenGL extensions:<o:p></o:p></p>
<p class="MsoPlainText">OpenGL ES profile version string: OpenGL
ES 3.2 NVIDIA 390.25 OpenGL ES profile shading language
version string: OpenGL ES GLSL ES 3.20 OpenGL ES profile
extensions:<o:p></o:p></p>
<p class="MsoPlainText">```<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Here is the same output from an ssh
connection from the client:<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">```<o:p></o:p></p>
<p class="MsoPlainText">ssh <user>@<server> glxinfo
| grep -i opengl<o:p></o:p></p>
<p class="MsoPlainText">Error: unable to open display<o:p></o:p></p>
<p class="MsoPlainText">```<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">And the same with x forwarding enabled
(via Xming installed on the client):<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">```<o:p></o:p></p>
<p class="MsoPlainText">ssh -X <user>@<server>
glxinfo | grep -i opengl<o:p></o:p></p>
<p class="MsoPlainText">Warning: No xauth data; using fake
authentication data for X11 forwarding.<o:p></o:p></p>
<p class="MsoPlainText">OpenGL vendor string: VMware, Inc.OpenGL
renderer string: Gallium 0.4 on llvmpipe (LLVM 3.8, 256 bits)
OpenGL version string: 3.0 Mesa 17.0.5 OpenGL shading language
version string: 1.30 OpenGL context flags: (none) OpenGL
extensions:<o:p></o:p></p>
<p class="MsoPlainText">```<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Looking at this output I'm coming to the
conclusion that my ssh connection is using the graphics driver
of my client machine, but I actually want to utilize the
servers GPU. Is this a use case for reverse port tunneling or
something similar?<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">I've attempted a simiar reverse
connection as follows, but this doesn't give me any info on
the gpu:<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">```<o:p></o:p></p>
<p class="MsoPlainText">ssh -X -R 11111:localhost:22
<user>@<server> glxinfo | grep -i opengl<o:p></o:p></p>
<p class="MsoPlainText">Warning: No xauth data; using fake
authentication data for X11 forwarding.<o:p></o:p></p>
<p class="MsoPlainText">OpenGL vendor string: VMware, Inc.<o:p></o:p></p>
<p class="MsoPlainText">OpenGL renderer string: Gallium 0.4 on
llvmpipe (LLVM 3.8, 256 bits) OpenGL version string: 3.0 Mesa
17.0.5 OpenGL shading language version string: 1.30 OpenGL
context flags: (none) OpenGL extensions:<o:p></o:p></p>
<p class="MsoPlainText">```<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">I'm sure this is a common issue and has
been solved previously, but I'm unable to parse through the
mailing lists effectively to get at my problem. It's also
possible that I'm looking for a solution in the wrong place.
Both of these systems are in a VPN, so maybe ssh isn't
necessary, but I don't know of another way of starting the
pvserver remotely without ssh.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Thanks in advance,<o:p></o:p></p>
<p class="MsoPlainText">Chris<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Met vriendlijke groet,<o:p></o:p></p>
<p class="MsoPlainText">REDstack BV<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Chris Coutinho<o:p></o:p></p>
<p class="MsoPlainText">Onderzoeker/Data Analist<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">tel: +31 (0)6 - 2222 5785<o:p></o:p></p>
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</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
Powered by <a class="moz-txt-link-abbreviated" href="http://www.kitware.com">www.kitware.com</a>
Visit other Kitware open-source projects at <a class="moz-txt-link-freetext" href="http://www.kitware.com/opensource/opensource.html">http://www.kitware.com/opensource/opensource.html</a>
Please keep messages on-topic and check the ParaView Wiki at: <a class="moz-txt-link-freetext" href="http://paraview.org/Wiki/ParaView">http://paraview.org/Wiki/ParaView</a>
Search the list archives at: <a class="moz-txt-link-freetext" href="http://markmail.org/search/?q=ParaView">http://markmail.org/search/?q=ParaView</a>
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</pre>
</blockquote>
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