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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
CMS Actions
ALICE Actions
LHCb Actions
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 LHCb