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Sixtrack Application :
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Author | Message |
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Send message Joined: 14 Jan 10 Posts: 1418 Credit: 9,464,921 RAC: 2,686 |
It seems that 'Max # jobs No limit' in my project preferences is limited by the server to 20 tasks a host. |
Send message Joined: 27 Sep 08 Posts: 847 Credit: 691,694,175 RAC: 114,052 |
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. |
Send message Joined: 14 Jan 10 Posts: 1418 Credit: 9,464,921 RAC: 2,686 |
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. |
Send message Joined: 27 Sep 08 Posts: 847 Credit: 691,694,175 RAC: 114,052 |
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. |
Send message Joined: 28 Sep 04 Posts: 728 Credit: 49,039,818 RAC: 27,119 |
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). |
Send message Joined: 26 Oct 18 Posts: 96 Credit: 4,188,598 RAC: 0 |
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 :) |
Send message Joined: 2 May 07 Posts: 2243 Credit: 173,902,375 RAC: 2,013 |
Project-Server with 32547 Tasks for sixtrack, but Client say no tasks are available. |
Send message Joined: 18 Dec 15 Posts: 1814 Credit: 118,483,932 RAC: 30,592 |
Project-Server with 32547 Tasks for sixtrack, butsame problem here :-( |
Send message Joined: 15 Nov 14 Posts: 602 Credit: 24,371,321 RAC: 0 |
Yes, I had that too this morning. I have stopped trying. |
Send message Joined: 18 Dec 15 Posts: 1814 Credit: 118,483,932 RAC: 30,592 |
the server still shows 32547 unsent tasks, same figure as 12 hours ago. So obviously, there is some disruption in the download process :-( |
Send message Joined: 2 May 07 Posts: 2243 Credit: 173,902,375 RAC: 2,013 |
Got one task at 6 UTC. Timelimit reached for an other Computer, |
Send message Joined: 24 Oct 04 Posts: 1173 Credit: 54,823,214 RAC: 15,936 |
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) |
Send message Joined: 29 Feb 16 Posts: 157 Credit: 2,659,975 RAC: 0 |
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. |
Send message Joined: 11 Aug 11 Posts: 8 Credit: 3,629,431 RAC: 0 |
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 |
Send message Joined: 16 Sep 17 Posts: 100 Credit: 1,618,469 RAC: 0 |
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. |
Send message Joined: 8 Jul 12 Posts: 2 Credit: 1,253,921 RAC: 0 |
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. |
Send message Joined: 29 Feb 16 Posts: 157 Credit: 2,659,975 RAC: 0 |
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. |
Send message Joined: 18 Dec 15 Posts: 1814 Credit: 118,483,932 RAC: 30,592 |
any rough idea when Sixtrack tasks will be available again? |
Send message Joined: 16 Sep 17 Posts: 100 Credit: 1,618,469 RAC: 0 |
I've been getting work consistently (ymmv, there doesn't seem to be enough to build a buffer server side). |
Send message Joined: 2 May 07 Posts: 2243 Credit: 173,902,375 RAC: 2,013 |
Sixtrack come in waves. So we have to wait. |
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