Message boards : ATLAS application : Latest ATLAS jobs getting much larger in download size?
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wujj123456

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Message 47898 - Posted: 25 Mar 2023, 19:28:57 UTC

I noticed today that since Mar 22, my boinc download increased dramatically. After correlating detailed traffic data on my hosts with boinc log, I confirmed they are from ATLAS downloads. Each ATLAS WU now downloads around 1.1GB of data for the *.pool.root.1 file. They used to be 250M each and I still have some of the smaller ones as comparison. The WU disk usage also reflects the change, likely after decompression.
Example old WU: https://lhcathome.cern.ch/lhcathome/result.php?resultid=389847635
Example new WU: https://lhcathome.cern.ch/lhcathome/result.php?resultid=390698043

I remember reading about LHC upgrades last year and I wonder if this is the result of the upgrade? Would be interesting to know what's added here. I wonder if it would make sense to re-introduce long simulation WUs to balance out the network and compute ratio, though it's not really causing a problem for me.
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Toggleton

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Message 47899 - Posted: 25 Mar 2023, 20:12:57 UTC - in response to Message 47898.  

https://lhcathome.cern.ch/lhcathome/forum_thread.php?id=5976&postid=47891
Probably a scientist added a batch to the ATLAS-queue not meant for BOINC, cause the root-file to download for 1 task is 1110MB.
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wujj123456

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Message 47900 - Posted: 25 Mar 2023, 21:37:21 UTC - in response to Message 47899.  

Thanks. Sorry missed that. Didn't expect that thread to contain the information I was looking for. Hopefully the returned results are still useful even though the WUs weren't intended for BOINC. :-)
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wujj123456

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Message 47904 - Posted: 26 Mar 2023, 6:23:37 UTC

Given there isn't really new science involved here as I thought, could moderator move this thread to ATLAS forum or just delete it? Thanks.
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Erich56

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Message 47905 - Posted: 26 Mar 2023, 8:27:18 UTC - in response to Message 47898.  

I noticed today that since Mar 22, my boinc download increased dramatically. After correlating detailed traffic data on my hosts with boinc log, I confirmed they are from ATLAS downloads. Each ATLAS WU now downloads around 1.1GB of data for the *.pool.root.1 file. ...
Hm, this made me curious and I wanted to see what's going on - however, no ATLAS tasks available for download :-(
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maeax

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Message 47906 - Posted: 26 Mar 2023, 9:17:16 UTC - in response to Message 47905.  

We know it since a few days. CP had wrote a answer in -prod. Discussion is in -dev.
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Message 47910 - Posted: 28 Mar 2023, 8:25:10 UTC - in response to Message 47899.  

https://lhcathome.cern.ch/lhcathome/forum_thread.php?id=5976&postid=47891
Probably a scientist added a batch to the ATLAS-queue not meant for BOINC, cause the root-file to download for 1 task is 1110MB.

I'm very disappointed not to hear anything more:

It may have been a mistake, but someone could tell us how and much more when it will be fixed !

Or will it stay as the new normal ?

I have just checked and my latest WUs are again with the 1,2 GB file

The answer from David is already 5 days old and no more info :-(

My clients will stay paused on Atlas


Supporting BOINC, a great concept !
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maeax

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Message 47911 - Posted: 28 Mar 2023, 8:57:27 UTC - in response to Message 47910.  
Last modified: 28 Mar 2023, 8:59:54 UTC

Or will it stay as the new normal ?

For me it's normal size.
Last Sunday the pipeline was empty and on Monday refilled.
btw 600 GByte every day for 600 Tasks.
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Message boards : ATLAS application : Latest ATLAS jobs getting much larger in download size?


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