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HarryRenshall - 06 Mar 2006
LHCb Tier 1 Resource Requirements Timetable for 2006/2007/2008
Last Updated 1.11.2007: Start to add 2008 plans and clarify experiment required shares compared with site offers.
Updated 25.06.2007: Split off 2006 plans into a separate linked page and remove LHC engineering run.
Updated 04.06.2007: replace LHCb spreadsheet with version of 29 May 2007 which extends requirements to the end of 2007 (sheet 1 of spreadsheet).
Updated 28.03.2007: replace LHCb spreadsheet with version of 28 March 2007 where cpu requirements are now gross values calculated by assuming the standard LCG inefficiencies.
Updated 22.03.2007: replace LHCb spreadsheet with version of 20 March 2007 going up to September 2007. Note major MC production to be completed by April so cpu requirements reduce.
Updated 6.03.2007: add placeholder for June/July DAQ to T0 to T1 throughput tests.
Updated 23.10.2006: revise requirements (now up to April 2007) from 26 Sep 2006 spreadsheet and update site plans.
Updated 05.10.2006: replace LHCB spreadsheet with version of 26 Sep 2006 which goes up to April 2007 (but changes are not yet reflected in site plans)
Updated 01.09.2006: add requirements for November and December from July spreadsheet.
Updated 10.07.2006: replace LHCB spreadsheet with version of 7 July 2006
Updated 7.06.2006 to reflect new dates (program pushed back by 1 month)
Updated 22.05.2006: replace LHCB spreadsheet with version of 11 May 2006
Updated 28.04.2006: attach LHCB spreadsheet
LHCb have provided a spreadsheet containing detailed Tier 1 resource requirements in cpu, disk, tape and network bandwidth. Last version was 29 May 2007 and it is attached here:
LHCb070529.xls
In the LHCb computing model CERN provides Tier 1 services to a total of 14% of the LHCb Tier 1 requirements. This share is not included in these tables which hence refer to the requirements on external Tier 1 sites only.
For 2007/1Q2008 we use the Tier 1 average cpu+disk+tape resource pledges to give the site shares:
| CNAF to provide 9% of resources |
IN2P3 to provide 14% of pp resources |
FZK to provide 8% of resources |
NIKHEF to provide 29% of resources |
PIC to provide 5% of pp resources |
RAL to provide 35% of pp resources |
For the period 2Q2008/1Q2009 the Tier-1 site offers in cpu+disk (we take the average) exceed the requirements by about 90%:
| CNAF offers 16.5% of external T1 cpu+disk requirements |
IN2P3 offers 27% of external T1 cpu+disk requirements |
FZK offers 17.5% of external T1 cpu+disk requirements |
NIKHEF offers 56% of external T1 cpu+disk requirements |
PIC offers 9% of external T1 cpu+disk requirements |
RAL offers 66.5% of external cpu+disk requirements |
Renormalising this to 100% gives the per site shares of the total external Tier1 LHCb requirements. These percentages are used to calculate the per site resource requirement spreadsheets:
| CNAF to provide 8.5% of cpu+disk resources |
IN2P3 to provide 14% of cpu+disk resources |
FZK to provide 9% of cpu+disk resources |
NIKHEF to provide 29% of cpu+disk resources |
PIC to provide 5% of cpu+disk resources |
RAL to provide 35% of cpu+disk resources |
LHCb Distribution of activities over 2006
LhcbTimeTable2006
LHCb Distribution of activities over 2007/2008
| Month |
LHCB Requirements |
| January 2007 |
Provide 1606 KSi2K of Tier 1 cpu for MC event generation, stripping, reconstruction and analysis of reconstructed data. |
| February |
Provide 1606 KSi2K of Tier 1 cpu for MC event generation, stripping, reconstruction and analysis of reconstructed data. |
| March |
Provide 1555 KSi2K of Tier 1 cpu for MC event generation and analysis of reconstructed data. |
| April |
Provide 1555 KSi2K of Tier 1 cpu for MC event generation and analysis of reconstructed data. |
| May |
|
| June |
Start DAQ to Tier-0 to Tier-1 throughput tests at 42 MB/s aggregate rate from CERN to Tier-1s. |
| July |
Continue DAQ to Tier-0 to Tier-1 throughput tests. |
| August |
|
| September |
Perform 2nd pass reconstruction tests at Tier-1 sites. |
| October |
|
| November |
|
| December |
|
| January 2008 |
|
| February |
Participate in the CCRC'08 functional tests. Over 2 weeks build up to as close to the 2008 p-p running conditions as resources allow to reach rates Tier0-Tier1 of 41 MB/s, Tier1-Tier0 of 6 MB/s and Tier1-Tier1 average of 9 MB/s. Run 300 24-hour long jobs/day at Tier0 and 1700 over the Tier1. Store 42TB Raw data on T1D0 at Tier0 and over Tier1, 21TB rDST over CERN and external Tier1, 8 TB DST on CERN T1D1 and 8TB DST on T0D1 at each Tier1. The Tier1 resource shares are CERN 14%, FZK 7%, IN2P3 12%, CNAF 8%, NL-T1 25%, PIC 4% and RAL 30%. All data can be scratched after the run. |
| March |
|
| April |
For 2008 running require 1770 KSi2K cpu, 1025 TB disk and 860 TB tape over the 6 Tier-1. |
| May |
Participate in the CCRC'08 full nominal p-p rates running. 4 weeks planned at the sustained rates of the February maximum with, in addition, 100-500 analysis jobs/day over Tier0 and Tier1 with 25% at Tier0. |
| June |
|
| July |
Start of Pilot Physics Run |
- LHCb060926.xls: LHCB 2006/1Q-2007 detailed planning of 26 Sep 2006 (Obsolete)
- LHCb070529.xls: LHCB 2006 to Dec.2007 detailed planning of 29 May 2007 (cpu now gross - see sheet 1)
LCG Web>LCGServiceChallenges>ServiceSchedule>SC4ExperimentPlans>LhcbPlans (2007-11-05, HarryRenshall)
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