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LCG Web>LCGServiceChallenges>SCActionList>ActionsSeptember2006 (2007-02-14, FlaviaDonno)
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LCG Web>LCGServiceChallenges>SCActionList>ActionsSeptember2006 (2007-02-14, FlaviaDonno) EditAttachPDF
-- JamieShiers - 28 Sep 2006
SC4 Combined Action List
Actions preparing for Q3/Q4 (CMS CSA06 etc.)
General actions
- Site monitoring of local services - to be discussed in detail at September 15 SC Tech Day
- Tools to monitor transfer activities on FTS channels; provide access to FTS logs (Gavin, Paolo) ( Temporary solution being tested )
- Improve the performance and reliability of the gLite Resource Broker (critical path for CMS CSA06)
- Support multiple priority levels for grid batch jobs (critical path for LHCB distributed analysis)
ATLAS Actions
| Request Date | Due Date | Action | Requestor | Target | Responsible | Contact | More Info | Status |
|---|
CMS Actions
| Request Date | Due Date | Action | Requestor | Target | Responsible | Contact | More Info | Status |
|---|---|---|---|---|---|---|---|---|
| 17 August | Transfer rates into CERN | Michael Ernst | James Casey, Olof Barring | See below | In Progress |
- Report https://twiki.cern.ch/twiki/pub/LCG/SCActionList/tier-2_transfers.doc
- 18 August. Debugging continues. Appears to be related to use of HTAR vs firewall?
- 17 August. A set of improvement parameters for outside sites running DPM has been found. Will be provided in next release.
ALICE Actions
| Request Date | Due Date | Action | Requestor | Target | Responsible | Contact | More Info | Status |
|---|---|---|---|---|---|---|---|---|
| 27 June | 10 July | end points for T1-T2 | Latchezar Betev | ALICE T2s | Patricia Mendez | Patricia.Mendez@cernNOSPAMPLEASE.ch | - | Pending - focus first on Tier0 - Tier1 issues (7 August) |
LHCb Actions
| Request Date | Due Date | Action | Requestor | Target | Responsible | Contact | More Info | Status |
|---|---|---|---|---|---|---|---|---|
| 27 June | 30 June | ROOT/POOL data access to SEs | Umberto Marconi | LHCb sites | Nick Brook / Umberto Marconi | Nick.Brook@cernNOSPAMPLEASE.ch, Umberto.Marconi@cernNOSPAMPLEASE.ch | See below | Problem only seen at SARA/NIKHEF & IN2P3 |
| 27 June | 30 June | ROOT/POOL data access to SEs | Umberto Marconi | NIKHEF/SARA | Nick Brook / Umberto Marconi | Nick.Brook@cernNOSPAMPLEASE.ch, Umberto.Marconi@cernNOSPAMPLEASE.ch | - | There is a specific network-related issue at NIKHEF/SARA which prevents jobs on worker nodes at NIKHEF accessing data on SEs at SARA. Following GDB of July 5th, proposed that this is followed up by negotiation between site, experiment and appropriate developers. July 19th. As temporary measure, NIKHEF is not used by LHCb for reconstruction, but only for simulation production. Discussions with dCache developers suggest a solution could be in beta shortly. |
| 27 June | July | VO boxes | Umberto Marconi | CNAF | Nick Brook / Umberto Marconi | Nick.Brook@cernNOSPAMPLEASE.ch, Umberto.Marconi@cernNOSPAMPLEASE.ch | Available at all sites except CNAF | Pending but not a show-stopper Updated 3 July |
| 27 June | prior to October | COOL and 3D database services | Umberto Marconi | all sites | Nick Brook / Umberto Marconi | Nick.Brook@cernNOSPAMPLEASE.ch, Umberto.Marconi@cernNOSPAMPLEASE.ch | - | July 24 Pending - more details of precise services by site to be provided |
ROOT/POOL data access to SE problem
The problem is with the client library of dcache that checks only the first 56 CAs. If your are unlucky (your CA is beyond these first 56 CAs) any interaction with the dcache server is not authenticated and fails. This problem has been experienced at IN2P3 and NIKHEF. LHCb want to have assured everywhere the possibility of accessing data directly from SE (without copying them to local disk on the WN) Update 3 July - a fix for this is scheduled for gLite 3.0.2 Update 19 July - As IN2P3 moved to gsidcap that is not supported by ROOT until recently, LHCb will use the disk endpoint there temporarily Update 25 July - This is not supported by ROOT in the AA until next release. LHCb will need to re-build our applications. Although not advertised the Lyon disk SE does support insecure dcap. Our "hack" to use this failed - currently under investigation by LHCbTopic revision: r3 - 2007-02-14 - FlaviaDonno
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