21) Message boards : Number crunching : Cupboard is bare? (Message 44018)
Posted 29 Dec 2020 by djoser
Post:
Yes, queue is empty for Sixtrack, Theory and Atlas.
I'm afraid everyone is on holidays and we just have to wait.
It's always good to have a backup project for such occasions.
22) Message boards : ATLAS application : queue is empty (Message 44016)
Posted 29 Dec 2020 by djoser
Post:
Queue is empty again.
David, give the server a kick once more :-)
23) Message boards : Number crunching : Reason for cutting Atlas credit on new version? (Message 43945)
Posted 18 Dec 2020 by djoser
Post:
Nobody is forced to run native apps.
They have been developed to satisfy large cluster's needs in computing centers and are offered here as an option.
Feel free to use vbox apps instead.


Hmmm...i wonder where this is an insult!? It's an explaination why native apps are a bit more complicated to set up.
Believe me: user 'computezrmle' is one of the good guys here and has outstanding technical understanding regarding LHC@home and i'm absolutely sure that he had no intention to insult anyone here! He's just here to help.

BTW: This post is also not intended to insult anyone!
24) Message boards : Number crunching : Reason for cutting Atlas credit on new version? (Message 43941)
Posted 18 Dec 2020 by djoser
Post:
Every version change comes with a cut in credits, but after a couple of workunits credit returns to "normal" values. Proof: https://lhcathome.cern.ch/lhcathome/results.php?hostid=10672881
Why? No one knows. The Boinc credit system is a mystery to everyone.
See also: https://lhcathome.cern.ch/lhcathome/forum_thread.php?id=5365
25) Message boards : Sixtrack Application : where are the tasks? (Message 43809)
Posted 9 Dec 2020 by djoser
Post:
America - month date year, medium small large, just plain wrong.

🤣🤣🤣 👍👍👍
26) Message boards : ATLAS application : Change in Credit? (Message 43789)
Posted 5 Dec 2020 by djoser
Post:
I run ATLAS native and notice a drop in credits (>50%) every time the version number changes.
27) Message boards : Theory Application : Calculation Error!!! Why? (Message 43709)
Posted 25 Nov 2020 by djoser
Post:
Stderr shows "Failed to read CernVM-FS configuration"

Check your CVMFS configuration by typing "cvmfs_config probe" into a console.
If you get "Probing xxxx... Failed" you have a local configuration problem with CVMFS.
28) Message boards : ATLAS application : Another batch of faulty WUs? (Message 43452)
Posted 29 Sep 2020 by djoser
Post:
Confirmed. I got one of those, too...
https://lhcathome.cern.ch/lhcathome/workunit.php?wuid=146135639
29) Message boards : ATLAS application : Running (0.517 CPUs) (Message 43388)
Posted 21 Sep 2020 by djoser
Post:
Furthermore i can see that your computers are working on other projects concurrently. You could try to set those on hold (or even remove them from BOINC) and see how ATLAS behaves with no other projects interfering.
30) Message boards : ATLAS application : Running (0.517 CPUs) (Message 43384)
Posted 21 Sep 2020 by djoser
Post:
Hello captainjack,

ATLAS using a fraction of a cpu thread is not normal. It only uses a fraction at the start (for about 6 to 10 minutes) and at the very end of a task.

I don't know exactly about the virtualbox version of ATLAS, but i think to remember that an ATLAS task need to run uninterrupted (200 events), because if it is being interrupted the complete tasks starts from the very beginning each time again.

You should visit Yeti's checklist for ATLAS and check it step by step:
https://lhcathome.cern.ch/lhcathome/forum_thread.php?id=4161&postid=29359#29359

Regards, djoser.
31) Message boards : ATLAS application : error on Atlas native: 195 (0x000000C3) EXIT_CHILD_FAILED (Message 43340)
Posted 12 Sep 2020 by djoser
Post:
Thanks for the update. Good to know that it works with singularity installed separately, but i'd like ATLAS tasks to work without a local installation of singularity.
I still wonder what the cause of the permission problem is, since it appears not only on one distribution but at least on two (latest Ubuntu and CentOS). Those two releases don't even use the same kernel, which makes the permission problem even more mysterious...
32) Message boards : ATLAS application : error on Atlas native: 195 (0x000000C3) EXIT_CHILD_FAILED (Message 43334)
Posted 11 Sep 2020 by djoser
Post:
Just out of curiosity: Has the problem regarding singularity not able to mount /var on the latest Ubuntu and CentOS versions been sorted out or does it still persist?
33) Message boards : ATLAS application : queue is empty (Message 43213)
Posted 12 Aug 2020 by djoser
Post:
They do (did)! Thank you!
34) Message boards : ATLAS application : queue is empty (Message 43209)
Posted 12 Aug 2020 by djoser
Post:
We are out of ATLAS tasks again...
35) Message boards : Number crunching : Is there a test project for LHC? (Message 43083)
Posted 17 Jul 2020 by djoser
Post:
Yes, there is:
https://lhcathomedev.cern.ch/lhcathome-dev/
36) Message boards : ATLAS application : error on Atlas native: 195 (0x000000C3) EXIT_CHILD_FAILED (Message 43081)
Posted 16 Jul 2020 by djoser
Post:
Theory do not need singularity it would use runc instead.

You are right about that. I forgot that Theory does not need singularity.

My SELinux is set to "permissive" on that machine. CVMFS is version 2.7.3.0.
37) Message boards : ATLAS application : error on Atlas native: 195 (0x000000C3) EXIT_CHILD_FAILED (Message 43079)
Posted 16 Jul 2020 by djoser
Post:
Centos 8.2 2004 system not able to mount

I can confirm that. I have one machine with CentOS 8.2-2004, too. Theory native tasks do run successful (without singularity being locally installed on that machine) though.

See here (successful Theory task):
https://lhcathome.cern.ch/lhcathome/result.php?resultid=279650345

and here (failed ATLAS task):
https://lhcathome.cern.ch/lhcathome/result.php?resultid=279646460

This is kind of weird!?!
38) Message boards : ATLAS application : error on Atlas native: 195 (0x000000C3) EXIT_CHILD_FAILED (Message 43029)
Posted 11 Jul 2020 by djoser
Post:
That would be awesome, thank you!
I only hope that CERN staff know about this permission problem with Focal...
39) Questions and Answers : Unix/Linux : CentOS Homepage - Cern (Message 43025)
Posted 11 Jul 2020 by djoser
Post:
The file I was thinking of was gui_rpc_auth.cfg, which gets created automatically once the daemon first starts (and which boinccmd uses to connect to the daemon).

Thanks for looking it up for me!
Yes, it's the file that contains the password for connecting the manager to localhost.

I already had successful native Theory tasks on CentOs 8, so everything is fine for me now and i gained some experience :-)
40) Message boards : ATLAS application : error on Atlas native: 195 (0x000000C3) EXIT_CHILD_FAILED (Message 43024)
Posted 11 Jul 2020 by djoser
Post:
Hello Gunde,

Hmmm...this seems to be the same problem we already had. That's strange...

I have to admit that i haven't tried it yet, because i decided to stay with Lubuntu 18.04 on my main machine until support ends (April 2021), according to the principle "never touch a running system". On another machine i tried CentOS 8 instead of Ubuntu, just for testing and fun :-) It feels not very different from Ubuntu, because both use Gnome as standard desktop environment, but setting up BOINC on CentOS is a little bit more work at first.

Greetings!


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