[Hps-analysis] 2021 trigger skims

[Nathan Baltzell]

Hello All,

After some further preparations, the 2021 trigger skims are launched.

Outputs will be going to /cache/hallb/hps/physrun2021/production/evio-skims.

I broke the run list from Norman into 5 lists, and started with the first 20% in one batch, all submitted.  I'll proceed to the other 4 batches over the holidays, assessing tape usage as we go.

-Nathan

> On Nov 29, 2021, at 3:39 PM, Nathan Baltzell <baltzell at jlab.org> wrote:
> 
> The 10x larger test is done at /volatile/hallb/hps/baltzell/trigtest3
> 
> -Nathan
> 
> 
>> On Nov 29, 2021, at 2:52 PM, Nathan Baltzell <baltzell at jlab.org> wrote:
>> 
>> Hello All,
>> 
>> Before running over the entire 2021 data set, I ran some test jobs using Maurik’s EVIO trigger bit skimmer.   Here’s the fraction of events kept in 14750 for each skim:
>> 
>> fee 2.0%
>> moll 3.3%
>> muon 1.9%
>> rndm 2.9%
>> 
>> In each case, it’s inclusive of all such types, e.g., moll=moll+moll_pde+moll_pair, rndm=fcup+pulser.
>> 
>> Are those numbers in line with expectations?  The total is 10% and not a problem if these skims are expected to be useful. The outputs are at /volatile/hallb/hps/baltzell/trigtest2 if people are interested to check things.
>> 
>> A 10x larger test is running now and going to /volatile/hallb/hps/baltzell/trigtest3 and should be done in the next couple hours.
>> 
>> ************
>> 
>> Note, it would be prudent to do this *only* for production runs, those that would be used in physics analysis, to avoid unnecessary tape access.  By that I mean removing junk runs, keeping only those with some significant number of events, and only keeping those with physics trigger settings (not special runs).  For that we need a run list.  I think we have close to a PB, but I remember hearing at the collaboration meeting that at least 20% is not useful for the porpoises of trigger bit skimming.
>> 
>> -Nathan_______________________________________________
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>> Hps-analysis at jlab.org
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> 

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