Veracity of current CPU time values about resource-modeling HOT 6 OPEN

@davidlange6 @slava77 I was hoping either of you might be able to provide meaningful comments on the numbers provided about processing requirements.

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It's a question to Tom (I think he entered the numbers based on my inputs).
@tommasoboccali

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ok, now I see it - btw interesting, can we discuss at some point what is this python ;)

We used these numbers from

• RECO only: ttbar reco from Slava. Assuming (which we believe is ~ true) his machine has 10 HS06 per core, we ended up in 20 sec per ev + some 10% (going to 25 sec/ev = 250 HS06s/ev)
• DR: the D part (which gives a +10 sec) can even be too low ... I think I saw a table by Slava at some point

AH, ok: here https://indico.cern.ch/event/624140/contributions/2533493/attachments/1438070/2212438/reco_2017_OnC_040317.pdf

it says D is 16, so more than 10.
The numbers in the presentation (page 10), would give on

• reco (which hs to include miniaod time) = 18.5 sec (I think for real reco the +10% missing is about alca but not sure i remember)
• D+R = 34.5 sec

so in this last release (4 months after the estimates which entered the doc), reco is probably a bit too high, DR seems ~ ok

tom

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Hey, it's becoming a party around here! What is this python? I keep telling people it's an expression of my midlife crisis (but I'm kidding).

So the bit of code (currently in cpu.py, but we'll get it into a JSON file I'm sure) that currently is

data_reco_time_lhc = 250 #this is per HS
mc_gensim_time_lhc = 500 #this is per HS
mc_digi_time_lhc = 100 #this is per HS

should really be more like

data_reco_time_lhc = 185 #this is per HS
mc_gensim_time_lhc = 500 #this is per HS
mc_digi_time_lhc = 160 #this is per HS

My main concern is that I have got the current reconstruction and the HL-LHC expectations in the same units...there is that factor of 10 for Slava's computer that I keep worrying that I'm not counting or double counting or whatever.

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