Message boards : Sixtrack Application : Tasks available / tasks not available
Message board moderation

To post messages, you must log in.

Previous · 1 · 2 · 3 · 4 · 5 · Next

AuthorMessage
Crystal Pellet
Volunteer moderator
Volunteer tester

Send message
Joined: 14 Jan 10
Posts: 1143
Credit: 6,989,895
RAC: 941
Message 37424 - Posted: 24 Nov 2018, 8:20:18 UTC

It seems that 'Max # jobs No limit' in my project preferences is limited by the server to 20 tasks a host.
ID: 37424 · Report as offensive     Reply Quote
Toby Broom
Volunteer moderator

Send message
Joined: 27 Sep 08
Posts: 739
Credit: 522,322,882
RAC: 288,676
Message 37427 - Posted: 24 Nov 2018, 9:57:12 UTC - in response to Message 37424.  

No limit uses the setting from computing, other.

Store at least n days of work & store upto an additional.


Boinc will take the run time of tasks and then try to buffer the amount of work that meet the ndays requirement. To give an example:


Tasks take 4hrs, you have store 1 days of work, with no additional buffer, it would have 4 WU's running if you had quad core, boinc would try to buffer 24WU's.
ID: 37427 · Report as offensive     Reply Quote
Crystal Pellet
Volunteer moderator
Volunteer tester

Send message
Joined: 14 Jan 10
Posts: 1143
Credit: 6,989,895
RAC: 941
Message 37429 - Posted: 24 Nov 2018, 10:40:17 UTC - in response to Message 37427.  
Last modified: 24 Nov 2018, 10:43:00 UTC

On a 30 core machine with 10 idle cores I only got 20 tasks. On 2 other machines with lesser cores, I also got 20 tasks,
so that's why I concluded it seems 20 is the maximum to get.
It must be a coincidence and probably again the notorious scheduler issue.

Like VBox and GPU-tasks not exiting or not requested in the server reply.
LHC@home	24 Nov 11:36:38	update requested by user	
LHC@home	24 Nov 11:36:39	Sending scheduler request: Requested by user.	
LHC@home	24 Nov 11:36:39	Requesting new tasks for CPU	
LHC@home	24 Nov 11:36:41	Scheduler request completed: got 0 new tasks	
LHC@home	24 Nov 11:36:41	No tasks sent	
LHC@home	24 Nov 11:36:41	No tasks are available for SixTrack	
LHC@home	24 Nov 11:36:41	No tasks are available for sixtracktest	
LHC@home	24 Nov 11:36:41	Message from server: VirtualBox is not installed	
LHC@home	24 Nov 11:36:41	Tasks for AMD/ATI GPU are available, but your preferences are set to not accept them

When the buffer would be filled (it isn't), I would not get 'Requesting new tasks for CPU', but don't need or project not the highest priority.
ID: 37429 · Report as offensive     Reply Quote
Toby Broom
Volunteer moderator

Send message
Joined: 27 Sep 08
Posts: 739
Credit: 522,322,882
RAC: 288,676
Message 37431 - Posted: 24 Nov 2018, 11:58:27 UTC - in response to Message 37429.  
Last modified: 24 Nov 2018, 12:00:22 UTC

Strange, here is my break down:

40thread = 18
44thread = 20
28thread = 20
32thread = 20
56thread = 40
24thread = 17
4thread = 16
4thread = 30
12thread = 46

On the 1st 4 machine, these are mixed with other tasks, so looks like unlimited with 1 CPU allows 20 WU max (1st & 6th would probally be 20 limit too), 5th machine I have set to 2 CPU then this doubles limit to 40. The last 3 machine are dedicated to SixTrack, here the limits seem to be BOINC defined based on setting. The configuration of this project is always a challenge with the settings not working consistently for each sub project, like on ATLAS #CPU actually is number of Jobs.
ID: 37431 · Report as offensive     Reply Quote
Harri Liljeroos
Avatar

Send message
Joined: 28 Sep 04
Posts: 594
Credit: 35,805,702
RAC: 18,184
Message 37432 - Posted: 24 Nov 2018, 13:40:35 UTC

Different subprojects have different behaviour from each other. My 16 core machine runs sixtrack and Atlas (4 core) currently. Atlas maximum task amount is same as core amount (=4, max # jobs = No limit) sixtrack uses Boinc cache settings (has now 80 tasks waiting).
ID: 37432 · Report as offensive     Reply Quote
Richie_unstable

Send message
Joined: 26 Oct 18
Posts: 85
Credit: 4,186,121
RAC: 0
Message 37451 - Posted: 29 Nov 2018, 18:19:41 UTC
Last modified: 29 Nov 2018, 18:20:46 UTC

Funny to see how quickly those unsent tasks are sucked out. Just before I went to sleep there was something like 200 000 task available, an hour ago maybe 20 000 and now only 6000+. There must be quite a traffic :)
ID: 37451 · Report as offensive     Reply Quote
maeax

Send message
Joined: 2 May 07
Posts: 1664
Credit: 95,064,802
RAC: 315,826
Message 40850 - Posted: 8 Dec 2019, 17:19:22 UTC

Project-Server with 32547 Tasks for sixtrack, but
Client say no tasks are available.
ID: 40850 · Report as offensive     Reply Quote
Erich56

Send message
Joined: 18 Dec 15
Posts: 1542
Credit: 52,087,485
RAC: 36,534
Message 40853 - Posted: 8 Dec 2019, 18:21:57 UTC - in response to Message 40850.  

Project-Server with 32547 Tasks for sixtrack, but
Client say no tasks are available.
same problem here :-(
ID: 40853 · Report as offensive     Reply Quote
Jim1348

Send message
Joined: 15 Nov 14
Posts: 602
Credit: 24,371,321
RAC: 6,652
Message 40855 - Posted: 8 Dec 2019, 20:49:54 UTC - in response to Message 40853.  

Yes, I had that too this morning. I have stopped trying.
ID: 40855 · Report as offensive     Reply Quote
Erich56

Send message
Joined: 18 Dec 15
Posts: 1542
Credit: 52,087,485
RAC: 36,534
Message 40861 - Posted: 9 Dec 2019, 6:00:26 UTC

the server still shows 32547 unsent tasks, same figure as 12 hours ago.
So obviously, there is some disruption in the download process :-(
ID: 40861 · Report as offensive     Reply Quote
maeax

Send message
Joined: 2 May 07
Posts: 1664
Credit: 95,064,802
RAC: 315,826
Message 40862 - Posted: 9 Dec 2019, 6:42:52 UTC

Got one task at 6 UTC. Timelimit reached for an other Computer,
ID: 40862 · Report as offensive     Reply Quote
Profile MAGIC Quantum Mechanic
Avatar

Send message
Joined: 24 Oct 04
Posts: 1022
Credit: 47,867,220
RAC: 4,551
Message 41078 - Posted: 26 Dec 2019, 10:43:01 UTC

https://lhcathome.cern.ch/lhcathome/server_status.php

Looks like we are out of Sixtrack work right now.
I got lucky enough to have enough to run now (2:45am)
ID: 41078 · Report as offensive     Reply Quote
Alessio Mereghetti
Volunteer moderator
Project administrator
Project developer
Project tester
Project scientist

Send message
Joined: 29 Feb 16
Posts: 157
Credit: 2,659,975
RAC: 0
Message 41178 - Posted: 6 Jan 2020, 9:03:35 UTC - in response to Message 41078.  

yes, we did not have enough in the buffer to cover the entire Christmas break.
one of our users resumed submission at the beginning of January - production of SixTrack results is back to full-steam, we are now filling our buffers.
Happy crunching!
A.
ID: 41178 · Report as offensive     Reply Quote
Profile Geoff Harmer

Send message
Joined: 11 Aug 11
Posts: 8
Credit: 3,626,566
RAC: 22
Message 41303 - Posted: 18 Jan 2020, 19:52:38 UTC - in response to Message 41178.  

I have seen again on 18/01/2020 in my event log:
No tasks are available for SixTrack

Same happened on 17/01/2020 09:45:58 but. later that day I got 2 SixTracks that ran perfectly

Is this still a problem or is it an issue on my PC because I have run for 11 years of LHC using this machine that always has Windows XP?

Best wishes
Geoff
ID: 41303 · Report as offensive     Reply Quote
AuxRx

Send message
Joined: 16 Sep 17
Posts: 100
Credit: 1,618,469
RAC: 0
Message 41304 - Posted: 19 Jan 2020, 14:40:26 UTC - in response to Message 41303.  

There are no new tasks queued at the moment. What little tasks are distributed are re-sent, because another volunteer didn't complete them in time. Therefore no specific indications of a problem on your side. Just a slow week for work unit creation.
ID: 41304 · Report as offensive     Reply Quote
saigon
Avatar

Send message
Joined: 8 Jul 12
Posts: 2
Credit: 1,215,707
RAC: 0
Message 41305 - Posted: 19 Jan 2020, 18:50:44 UTC

It seems that SixTrack is a placebo, to pour something from one empty vessel into another. Tasks are generated only for 'Leave me alone'.
Apathetic planet.
ID: 41305 · Report as offensive     Reply Quote
Alessio Mereghetti
Volunteer moderator
Project administrator
Project developer
Project tester
Project scientist

Send message
Joined: 29 Feb 16
Posts: 157
Credit: 2,659,975
RAC: 0
Message 41307 - Posted: 20 Jan 2020, 7:53:22 UTC - in response to Message 41304.  

Hi Geoff Harmer,
what replied by AuxRx is correct - I will add that the presently active SixTrack users are analysing the results you have produced and deciding the next batch of submission. Thanks for your time and CPUs!
Happy crunching,
A.
ID: 41307 · Report as offensive     Reply Quote
Erich56

Send message
Joined: 18 Dec 15
Posts: 1542
Credit: 52,087,485
RAC: 36,534
Message 41446 - Posted: 3 Feb 2020, 5:56:28 UTC

any rough idea when Sixtrack tasks will be available again?
ID: 41446 · Report as offensive     Reply Quote
AuxRx

Send message
Joined: 16 Sep 17
Posts: 100
Credit: 1,618,469
RAC: 0
Message 41449 - Posted: 3 Feb 2020, 8:46:14 UTC - in response to Message 41446.  

I've been getting work consistently (ymmv, there doesn't seem to be enough to build a buffer server side).
ID: 41449 · Report as offensive     Reply Quote
maeax

Send message
Joined: 2 May 07
Posts: 1664
Credit: 95,064,802
RAC: 315,826
Message 41451 - Posted: 3 Feb 2020, 9:51:05 UTC

Sixtrack come in waves. So we have to wait.
ID: 41451 · Report as offensive     Reply Quote
Previous · 1 · 2 · 3 · 4 · 5 · Next

Message boards : Sixtrack Application : Tasks available / tasks not available


©2022 CERN