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Hi Pär,<br>
<br>
yes , you can -v or e.g. -vvv together with srun. I'm not sure,
though, if taht shows anything X11-related, but you might try.<br>
<br>
<br>
Best<br>
Marcus<br>
<br>
<div class="moz-cite-prefix">On 2/28/20 3:45 PM, Pär Lundö wrote:<br>
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<div dir="ltr">
<div dir="ltr"><span style="background-color: rgba(255, 255,
255, 0);"><br>
</span></div>
<div dir="ltr"><span style="background-color: rgba(255, 255,
255, 0);">Hi everyone</span>
</div>
<div dir="ltr"><span style="background-color: rgba(255, 255,
255, 0);"><br>
</span></div>
<div dir="ltr"><span style="background-color: rgba(255, 255,
255, 0);">Thank you for your support.</span>
</div>
<div dir="ltr"><span style="background-color: rgba(255, 255,
255, 0);">I’ve done a few changes and done some further
testing but it has not solved my problem. </span>
</div>
<div dir="ltr"><span style="background-color: rgba(255, 255,
255, 0);">Regardless of the settings for the sshd I can’t
get it to </span>
</div>
<div dir="ltr"><span style="background-color: rgba(255, 255,
255, 0);">I am able to use SSH to the node directly along
with ”-X”-argument and get the X11 forwarding to work.</span>
</div>
<div dir="ltr"><span style="background-color: rgba(255, 255,
255, 0);">Is there a debug output from srun to retrieve
during the connection to the node?</span>
</div>
<div dir="ltr"><span style="background-color: rgba(255, 255,
255, 0);">(Surely the simple answer to that is yes! I’ll try
and locate that debug-function, or can someone help with
that?)</span>
</div>
<div dir="ltr"><span style="background-color: rgba(255, 255,
255, 0);"><br>
</span></div>
<div dir="ltr"><span style="background-color: rgba(255, 255,
255, 0);">Best regards,</span>
</div>
<div dir="ltr"><span style="background-color: rgba(255, 255,
255, 0);">Pär Lundö</span>
</div>
<div style="color: black; font-family: Calibri, Tahoma, Arial,
Helvetica, sans-serif; font-size: 11pt;">
<br>
</div>
<br>
<hr style="color: black; font-family: Calibri, Tahoma, Arial,
Helvetica, sans-serif; font-size: 11pt;">
<b style="color: black; font-family: Calibri, Tahoma, Arial,
Helvetica, sans-serif; font-size: 11pt;">From:</b>
<font face="Calibri, Tahoma, Arial, Helvetica, sans-serif"><span
style="font-size: 11pt;">"slurm-users"
<a class="moz-txt-link-rfc2396E" href="mailto:slurm-users-bounces@lists.schedmd.com"><slurm-users-bounces@lists.schedmd.com></a></span></font>
<br>
<b style="color: black; font-family: Calibri, Tahoma, Arial,
Helvetica, sans-serif; font-size: 11pt;">Sent:</b>
<font face="Calibri, Tahoma, Arial, Helvetica, sans-serif"><span
style="font-size: 11pt;">27 feb. 2020 12:29</span></font>
<br>
<b style="color: black; font-family: Calibri, Tahoma, Arial,
Helvetica, sans-serif; font-size: 11pt;">To:</b>
<font face="Calibri, Tahoma, Arial, Helvetica, sans-serif"><span
style="font-size: 11pt;">"Slurm User Community List"
<a class="moz-txt-link-rfc2396E" href="mailto:slurm-users@lists.schedmd.com"><slurm-users@lists.schedmd.com></a></span></font>
<br>
<b style="color: black; font-family: Calibri, Tahoma, Arial,
Helvetica, sans-serif; font-size: 11pt;">Subject:</b>
<font face="Calibri, Tahoma, Arial, Helvetica, sans-serif"><span
style="font-size: 11pt;">Re: [slurm-users] Slurm 19.05
X11-forwarding</span></font>
<br>
<br>
</div>
<div class="WordSection1">
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hi
Sean,
<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>
</o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
lang="EN-GB">Thank you for your reply.
<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
lang="EN-GB">I will test it asap.
<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
lang="EN-GB"><o:p>
</o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
lang="EN-GB">Best regards,
<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
lang="EN-GB">Pär Lundö
<o:p></o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif"
lang="EN-US">From:</span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif"
lang="EN-US"> slurm-users
<a class="moz-txt-link-rfc2396E" href="mailto:slurm-users-bounces@lists.schedmd.com"><slurm-users-bounces@lists.schedmd.com></a>
<b>On Behalf Of </b>Sean Crosby<br>
<b>Sent:</b> den 27 februari 2020 10:26<br>
<b>To:</b> Slurm User Community List
<a class="moz-txt-link-rfc2396E" href="mailto:slurm-users@lists.schedmd.com"><slurm-users@lists.schedmd.com></a><br>
<b>Subject:</b> Re: [slurm-users] Slurm 19.05
X11-forwarding <o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<div>
<div>
<p class="MsoNormal">I remember that we had to add this to
our /etc/ssh/sshd_config to get X11 to work with Slurm
19.05
<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">X11UseLocalhost no <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">We added this to our login nodes (where
users ssh to), and then restarted the ssh server. You
would then need to log out and log back in with X11
forwarding again.
<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Sean <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt">--<br>
Sean Crosby | Senior DevOpsHPC Engineer and HPC Team
Lead<br>
Research Computing Services | Business Services<br>
The University of Melbourne, Victoria 3010 Australia <o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal">On Wed, 26 Feb 2020 at 20:52, Pär Lundö
<<a href="mailto:par.lundo@foi.se"
moz-do-not-send="true">par.lundo@foi.se</a>> wrote:
<o:p></o:p></p>
</div>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Hi, <br>
<br>
Thank you for your quick replies.<br>
Please bear with me as I am a newbie regarding Slurm and
Linux.<br>
My hostname is not a FQDN and I´m running Slurm on a local
node (slurmctld and slurmuser are the same) just to verify
that the X11-forwarding is working (amongst other things).<br>
The output of "xauth list" is as follows:<br>
"<br>
parlun-E6540/unix: MIT-MAGIC-COOKIE-1
bcf263421d143e6ba3297dfe926c68b8<br>
#ffff#7061726c756e2d4536353430#: MIT-MAGIC-COOKIE-1
bcf263421d143e6ba3297dfe926c68b8<br>
"<br>
I seem to be missing any ":0", i.e. to wich display or
Xserver my user (parlun-E6540) uses?<br>
I´ve tried adding the user "slurm", who is designated
slurmuser, via "xhost +SI:localuser:slurm" but I still get
the error stating that the magic cookie could not be
retrieved.<br>
<br>
You are correct, X11Parameters only holds one option
"home_xauthority".<br>
Does this setting automatically search in the
"/home/slurm"-dir for the Xauthority-file? (Given that the
slurmuser is "slurm").<br>
Trying to locate the storage where xauthoriy is present, I
do not find it my home-dir instead it is in some other
OS-dir.<br>
<br>
Searching for additional help I came across a debian
package (xvfb) for virtual framebuffers. i.e. video/GUI is
sent to a virtual buffer instead of a physical display.
Anyone tried that?<br>
I haven´t not yet installed it, but is curious if that´s a
way to go.<br>
<br>
Best regards,<br>
Pär Lundö<br>
<br>
-----Original Message-----<br>
From: slurm-users <<a
href="mailto:slurm-users-bounces@lists.schedmd.com"
target="_blank" moz-do-not-send="true">slurm-users-bounces@lists.schedmd.com</a>>
On Behalf Of Ryan Novosielski<br>
Sent: den 25 februari 2020 21:23<br>
To: <a href="mailto:slurm-users@lists.schedmd.com"
target="_blank" moz-do-not-send="true">slurm-users@lists.schedmd.com</a><br>
Subject: Re: [slurm-users] Slurm 19.05 X11-forwarding<br>
<br>
-----BEGIN PGP SIGNED MESSAGE-----<br>
Hash: SHA1<br>
<br>
I seem to remember there being a config option to specify
rewriting the hostname as well. I thought it was part of
X11Parameters, but I only see one option there:<br>
<br>
<a
href="https://slurm.schedmd.com/archive/slurm-19.05-latest/slurm.conf.html"
target="_blank" moz-do-not-send="true">https://slurm.schedmd.com/archive/slurm-19.05-latest/slurm.conf.html</a><br>
<br>
On 2/25/20 10:55 AM, Tina Friedrich wrote:<br>
> I remember having issues when I set up X forwarding
that had to do <br>
> with how the host names were set on the nodes. I had
them set (CentOS <br>
> default) to the fully qualified hostname, and that
didn't work - with <br>
> an error message very similar to what you're getting,
if memory serves <br>
> right. 'Fixed' it by setting the hostnames on all my
cluster nodes to <br>
> the short version.<br>
><br>
> What does 'xauth list' give you on your nodes (and
the machine you're <br>
> coming from)?<br>
><br>
> This is/was SLURM 18.08 though, not sure if that
makes a difference.<br>
><br>
> Tina<br>
><br>
> On 25/02/2020 04:55, Pär Lundö wrote:<br>
>> Hi,<br>
>><br>
>> Thank you for your reply Patrick. I´ve tried that
but I still get the <br>
>> error stating that the magic cookie could not be
retrieved.<br>
>> Reading Tim´s answer, this bug should have been
fixed in a release <br>
>> following 18.08, but I´m using 19.05 thus it
should have been taken <br>
>> care of?<br>
>><br>
>> Best regards, Pär Lundö<br>
>><br>
>> -----Original Message----- From: slurm-users <br>
>> <<a
href="mailto:slurm-users-bounces@lists.schedmd.com"
target="_blank" moz-do-not-send="true">slurm-users-bounces@lists.schedmd.com</a>>
On Behalf Of Patrick Goetz
<br>
>> Sent: den 24 februari 2020 21:38 To:<br>
>> <a href="mailto:slurm-users@lists.schedmd.com"
target="_blank" moz-do-not-send="true">slurm-users@lists.schedmd.com</a>
Subject: Re: [slurm-users] Slurm<br>
>> 19.05 X11-forwarding<br>
>><br>
>> This bug report appears to address the issue
you're seeing:<br>
>><br>
>> <a
href="https://bugs.schedmd.com/show_bug.cgi?id=5868"
target="_blank" moz-do-not-send="true">https://bugs.schedmd.com/show_bug.cgi?id=5868</a><br>
>><br>
>><br>
>><br>
>> On 2/24/20 4:46 AM, Pär Lundö wrote:<br>
>>> Dear all,<br>
>>><br>
>>> I started testing and evaluating Slurm
roughly a year ago and used <br>
>>> it succesfully with MPI-programs. I have now
identified that I need <br>
>>> to use X-forwarding in order to make use of
an application needed to <br>
>>> run a GUI. However I seem not to be able to
use the "X11Forwarding" <br>
>>> in Slurm.conf with any sucess. A simple test
with srun as "srun - <br>
>>> -x11 <script-to-start>", yields an
error stating: "srun: error: <br>
>>> x11_get_xauth: Could not retrieve magic
cookie. Cannot use X11 <br>
>>> forwarding." I'm guessing that there some
additional setting I'm <br>
>>> missing out on.<br>
>>> Searching through documentation does not
reveal anything <br>
>>> extraordinary to be performed with the
X11-forwarding. I have <br>
>>> searched bug-reports and found similiar
problems but fixes have been <br>
>>> implemented in Slurm-versions prior to the
one I am using.<br>
>>> In addition users have been reporting that
the implementation made <br>
>>> by Slurm, now have fixed their issues. I have
used the <br>
>>> "export=DISPLAY, HOME" as an additional
argument for srun but <br>
>>> without any progress. Anyone with similiar
problem who can aid or <br>
>>> advice me on howto use the X11Forward
feature? Any help is much <br>
>>> appreciated.<br>
>>><br>
>>> I am running Slurm 19.05 and Ubuntu 18.10.<br>
>>><br>
>>> Best regards, Pär Lundö<br>
>>><br>
>>> This message is from an external sender.
Learn more about why this <br>
>>> matters.<br>
>>> <<a
href="https://ut.service-now.com/sp?id=kb_article&number=KB0011401"
target="_blank" moz-do-not-send="true">https://ut.service-now.com/sp?id=kb_article&number=KB0011401</a>><br>
>>><br>
>>><br>
>><br>
<br>
- --<br>
____<br>
|| <a moz-do-not-send="true">\\UTGERS</a>,
|----------------------*O*------------------------<br>
||_// the State | Ryan Novosielski - <a
href="mailto:novosirj@rutgers.edu" target="_blank"
moz-do-not-send="true">
novosirj@rutgers.edu</a><br>
|| \\ University | Sr. Technologist - 973/972.0922 ~*~
RBHS Campus<br>
|| \\ of NJ | Office of Advanced Res. Comp. - MSB
C630, Newark<br>
`'<br>
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<br>
<pre class="moz-signature" cols="72">--
Marcus Wagner, Dipl.-Inf.
IT Center
Abteilung: Systeme und Betrieb
RWTH Aachen University
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Tel: +49 241 80-24383
Fax: +49 241 80-624383
<a class="moz-txt-link-abbreviated" href="mailto:wagner@itc.rwth-aachen.de">wagner@itc.rwth-aachen.de</a>
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</pre>
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