CMS: 2015 datasets - initial considerations

[katilp]

For Run 2, i.e. from 2015 onwards, CMS is using the MiniAOD format.
Data will be released in MiniAOD (and AOD, to be discussed in CMS)

From PPD conveners (03.12.2019):

'16Dec2015' is the proper version for 2015 data analysis as mentioned in
https://twiki.cern.ch/twiki/bin/view/CMS/PdmV2015Analysis

'08Jun2016' (3.8T) & '09Jun2016' (0T) are for Egamma datasets
https://twiki.cern.ch/twiki/bin/view/CMS/PdmVDataReprocessing765p1EcalCorrFix
(This is not mentioned in the above Analysis Recipe)

Regarding the release, we can consider last version of CMSSW_7_6, i.e. CMSSW_7_6_6_patch1.

Data reprocessings for 2015:

• 16Dec2015: Reprocessing of 13 TeV data, 3.8 T
• 20Jan2016: Reprocessing of Cosmics data, 3.8T
• 27Jan2016: Reprocessing of 13 TeV data, 0 T
• 01Mar2016: Reprocessing of Cosmics data, 0T
• 08Jun2016 (3.8 T data) and 09Jun2016 (0T data): Reprocessing with Ecal
  correction fix (only for specific PDs affected by this)

See information in
https://twiki.cern.ch/twiki/bin/view/CMS/PdmVDataReprocessing
https://twiki.cern.ch/twiki/bin/view/CMS/PdmVDataReprocessing76EndOf2015

The legacy processings (confirmed for MiniAOD by Giovanni Petrucciani) are:

MiniAOD:

Collision data

https://twiki.cern.ch/twiki/bin/view/CMSPublic/WorkBookMiniAOD#Run2015_Data_76X
dataset=/*/*16Dec2015*/MINIAOD
Size: 24.4TB
237 datasets, no Run2015A (B=0T)

MC

https://twiki.cern.ch/twiki/bin/view/CMSPublic/WorkBookMiniAOD#2015_MC
Run2 Fall15 MiniAOD v2 campaign (76X version 2)
dataset=/*/*RunIIFall15MiniAODv2-PU25nsData2015v1*/*
(but some SUSY studies remained in 764)
Size: 227.4TB
7114 datasets

Corresponding AOD:

Collision data

Total size of PromptReco just for cross-check and comparison (including all versions v1, v2, v3..., all technical and 0T datasets), not to be included to legacy or release

Datasets: https://cmsweb.cern.ch/das/request?view=list&limit=50&instance=prod%2Fglobal&input=dataset%3D%2F*%2FRun2015*PromptReco*%2FAOD+
Size: https://cmsweb.cern.ch/das/request?view=list&limit=50&instance=prod%2Fglobal&input=block+dataset%3D%2F*%2FRun2015*PromptReco*%2FAOD+%7C+sum%28block.size%29
Size 303.7TB
441 datasets

Single reprocessings

##### 16Oct2015:
https://cmsweb.cern.ch/das/request?view=list&limit=50&instance=prod%2Fglobal&input=dataset%3D%2F*%2F*16Oct2015*%2FAOD
Size: 9.4TB
51 datasets, RunB only

16Dec2015:

dataset=/*/*16Dec2015*/AOD
Size: 189.6TB
237 datasets, no Run2015A
Release: CMSSW_7_6_3

27Jan2016:

dataset=/*/*27Jan2016*/AOD
Size: 51.7TB
168 datasets
Release: CMSSW_7_6_3_patch2

MC

dataset=/*/*RunIIFall15*/AODSIM
(to be confirmed!!)
Size: 2.1PB
7370 datasets

If restricting to parent data of MiniAOD above
dataset=/*/RunIIFall15DR76-PU25nsData2015v1_76X_mcRun2*/AODSIM
Size: 1.7PB
6750 datasets (i.e. less than MiniAOD)

Total volume:

• min 250TB (MiniAOD for data + MC)
• or 240 TB + 250 TB = 0.5PB (MiniAOD and AOD for data, MiniAOD for MC)
• max 2.5PB (MiniAOD and AOD for data + MC)

Luminosity considerations

See https://twiki.cern.ch/twiki/bin/view/CMSPublic/LumiPublicResults#2015_Proton_Proton_13_TeV_Collis
Release RunC (beginning Sept - beginning Oct)?

RAW

The total sum is just for the record, not for a release on CODP apart from small samples:
dataset=/*/Run2015*/RAW
488 datasets
Size: 1.5PB

[katilp]

Updating the values and links above