CM document discussion
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LHCb Computing CM document discussion
description
CM document discussion. Clarifications, e.g. on trigger simulation. Made changes to text to hopefully clarify some of the questions How to iterate?. Work in Progress – e.g. Data Placement. Difficult to be precise about work in progress, prefer to stay vague than make false promises. MDST.DST. - PowerPoint PPT Presentation
Transcript of CM document discussion
LHCbComputing
CM document discussion
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Clarifications, e.g. on trigger simulation
Made changes to text to hopefully clarify some of the questionsHow to iterate?
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Work in Progress – e.g. Data Placement
Difficult to be precise aboutwork in progress, prefer tostay vague than make falsepromises
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MDST.DST
m MDST.DST (was ALL.DST) intended to facilitate migration to MDSTo This is work in progresso Cost is temporary, will be removed when migration is
completeP Calling it “indifference” seems harsh
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Cost of data preservation
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Simulation
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Simulation
m Two questions:o What are ideas for reducing LHCb simulation time
P Answer is improved use of transport cuts, adapt granularity of detector to precision required, do not simulate spillover events in detectors that are insensitive to it (Calo, Muon)
P Work in progress, and details too technical to be described briefly
o Common improvements in G4, vectorisation etc.P Indeed. Already described in common chapter. Does it
need to be expanded?
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Resources estimates
m Estimates foe 2015 are now different from request just made to C-RSGo How do we ensure consistency?
