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How to stack 100s of tasks?


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Message boards : Sixtrack Application : How to stack 100s of tasks?

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BRG
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Message 29814 - Posted: 4 Apr 2017, 11:30:22 UTC

Clearly im missing a trick here...

Checking some users via the stats system, Its clear to see some members have for example 8 cores, yet have 100 plus tasks in progress... so how are they doing it?

Max amount of WU's someone can get from LHC is 24 unless they have more than 24 cores, so how have these users with less than 24 cores got over 100 tasks?

Crystal Pellet
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Message 29816 - Posted: 4 Apr 2017, 12:11:37 UTC - in response to Message 29814.

For me no trick. For a 14-core system I've a work-preference created allowing only SixTrack and had set

Max # jobs No limit
Max # CPUs No limit

and got 12 tasks on first request and another 13 tasks on second request.

Profile Robert Pick
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Message 29818 - Posted: 4 Apr 2017, 13:16:05 UTC - in response to Message 29814.

I have an I7 chip in my machine that is a 4 core processor and utilizes 8 threads, 2 for each processor. Each thread is capable of receiving 14 work units. Thus allowing me to receive 112 tasks when running a full load. Not bad for a 4 core processor! Pick
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BRG
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Message 30031 - Posted: 24 Apr 2017, 17:25:41 UTC - in response to Message 29818.

I have an I7 chip in my machine that is a 4 core processor and utilizes 8 threads, 2 for each processor. Each thread is capable of receiving 14 work units. Thus allowing me to receive 112 tasks when running a full load. Not bad for a 4 core processor! Pick


not quite following how this works Robert?!?!

4 cores... thread for each core so that's 2 threads per core so that's 8 useable cores??

PHILIPPE
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Message 30033 - Posted: 24 Apr 2017, 19:21:20 UTC - in response to Message 30031.

@ Robert Pick :

36511150 17113386 6 May 2014, 13:28:43 UTC 6 May 2014, 13:33:10 UTC Erreur en cours de calculs 1.05 0.06 --- sixtracktest v451.05 (sse2)
windows_x86_64
36510062 17113314 6 May 2014, 13:14:53 UTC 6 May 2014, 13:19:50 UTC Erreur en cours de calculs 1.14 0.08 --- sixtracktest v451.05 (sse2)
windows_x86_64
36509196 17113283 6 May 2014, 13:01:11 UTC 6 May 2014, 13:02:54 UTC Erreur en cours de calculs 1.06 0.06 --- sixtracktest v451.05 (pni)
windows_intelx86


14696095 6752043 10 Mar 2013, 15:47:35 UTC 10 Mar 2013, 18:58:57 UTC Terminé et validé 10,996.50 10,971.66 59.26 SixTrack v444.01 (pni)
windows_intelx86
14696096 6752097 10 Mar 2013, 15:47:35 UTC 10 Mar 2013, 19:21:58 UTC Terminé et validé 12,315.90 12,289.51 67.84 SixTrack v444.01 (pni)
windows_intelx86
14692451 6753369 8 Mar 2013, 16:48:17 UTC 9 Mar 2013, 18:17:46 UTC Terminé et validé 13,784.48 13,400.72 74.92 SixTrack v444.01 (sse3)
windows_intelx86


Just to say , It seems there is a bug about the date in your tasks list.

Profile Robert Pick
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Message 30052 - Posted: 25 Apr 2017, 21:48:55 UTC - in response to Message 30033.

Hummm! That is certainly not my task list!!! Pick
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Profile MAGIC Quantum Mechanic
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Message 30053 - Posted: 26 Apr 2017, 3:45:48 UTC - in response to Message 30052.
Last modified: 26 Apr 2017, 3:49:46 UTC

Hummm! That is certainly not my task list!!! Pick


https://lhcathome.cern.ch/lhcathome/show_host_detail.php?hostid=10190874


https://lhcathome.cern.ch/lhcathome/results.php?hostid=10190874
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Message boards : Sixtrack Application : How to stack 100s of tasks?