Summary of CDF 4072 and 4100: ----------------------------- 1200 MIPS sec for full reconstruction of an average event 56,000 MIPS CPU power for reconstruction (that's the PC farm, I suppose, and is thus irrelevant for us here.) 90,000 MIPS CPU power for analysis (that's central facilities, I suppose) This was obtained by scaling Run I capability by a factor 25. For comparison, the luminosity ratio Run II/Run I is 20. 160TB of PAD data. For kicks, you can arrive at a very similar estimate by taking 75Hz L3 output @ 1e32 = 750nb 750nb * 2fb-1 = 1.5e9 events 1.5e9 events @ 100kB/event = 150TB of PAD output. The actual estimate was done in a much less naive fashion. 18% of PAD = 28TB desired to be disk resident @ central facility This was chosen as it is the same fraction as Run I. 4TB data skimming/serving per day on central facility which translates into a 50MB/s I/O bandwidth requirement. This number was arrived at as follows: 5% of events are part of Run I official data sets assume we want to be able to run through 1/2 of that in one day => 5% * 0.5 * 160TB = 4TB. Apart from these numbers, CDF/DOC/COMP_UPG/PUBLIC/4100 also has a variety of more or less detailed usage cases for actual analyses that were done in Run I. fkw notes: ---------- Some of us should take a look at the use cases they report in 4100 in some detail, and figure out if the 4TB/day is sufficiently well justified. E.g. one might naively expect that in Run II the fraction of useful data is much larger than 5% given the change in Level 3 trigger !?!
CDF 5565 describes 9 streams: ----------------------------- Stream brief description Xsection [nb] out of L3 --------------------------------------------------------------------- 1 express: J/psi,W,Z,zero-bias ~20 2 High-Et leptons et al. ~60 3 photon triggers (mostly High-Et) ~50 4 Di-tau and alike (mostly High-Et) ~70 5 zero-bias & diffraction ~33 6 missing Et no leptons ~80 7 QCD jets ~50 8a hadronic 2-track ~110 8b lepton+track b-trigger ~50 9 J/psi and other di-lepton ~40 Note: fkw split 8 into 8a and 8b because 5565 is missing the 100nb hadronic 2-track triggers that are included in latest version of 4718.