LCG Introduction Kors Bos NIKHEF Amsterdam GDB meeting

LCG Introduction Kors Bos, NIKHEF, Amsterdam GDB meeting @BNL, Sept. 6 2006

LCG From the last meeting • Minutes of the June meeting at the GDB wiki page – https: //twiki. cern. ch/twiki/bin/view/LCG/Grid. Deployment. Board – Comments ? – Thank you Jeremy Coles !! • Minutes, Summary and Actions now also on GDB wiki – https: //twiki. cern. ch/twiki/bin/view/LCG/Grid. Deployment. Board • Actions from July meeting: – https: //twiki. cern. ch/twiki/bin/view/LCG/Gd. BAction. List 2

LCG Changes and apologies • NDGF as a new member of the GDB – Oxana will be the representative – Have to discuss formalities as NDGF is not a country – Sweden, Norway, Denmark and Finland continue to be members • Apologies received – Mirco Mazzocato, Nick Brook, . . 3

Dates for 2006 LCG • Oct 4 GDB @CERN IT Aud. – Problem with e. IRG meeting in Helsinki on Oct. 4 -5 • Nov 8 GDB @CERN Bld 60 -6 -002 – Note unusual place: only phone, no vrvs • Dec 6 GDB @CERN IT Aud. 4

LCG Other Dates for September 2006 • Sept. 11 OB @CERN – Closed meeting • Sept. 15 SC Tech. Mtng. @CERN – http: //indico. cern. ch/conference. Display. py? conf. Id=3849 • Sept. 21 LHC OPN@SURFnet in Utrecht – http: //agenda. cern. ch/full. Agenda. php? ida=a 062977 • Sept. 25 -26 LHCC Compr. Rev @CERN – http: //agenda. cern. ch/full. Agenda. php? ida=a 057132 • Sept. 25 -29 EGEE Proj. Conf in Geneva – http: //egee-technical. web. cern. ch/egee-technical/conferences/EGEE 06/ 5

LCG GDB meetings in 2007 To avoid confusion in 2007, the GDB is always on the first Wednesday of the month • January 10 • February 7 • March 7 • April 4 in Prague • May 2 • June 6 • July 4 • August 1 • September 5 • October 3 • November 7 • December 5 CHEP 2007 Sept 2 -7 Victoria BC The CERN IT Auditorium has been reserved those days 6

LCG GDB meeting @Triumf in 2007 Hi Kors, I forgot that I was supposed to contact you about having a GDB meeting at TRIUMF in association with CHEP'07. In talking to Randy Sobie, we thought the following would be good: -- Friday, Aug. 31: GDB at TRIUMF -- Saturday/Sunday, Sept. 1 -2: LCG (Tier-2) meeting in Victoria -- Sept. 3 -7: CHEP'07 in Victoria This would mean that people would have to fly in to Vancouver on Thursday. We can arrange for a bus from TRIUMF to the airport after the meeting on Friday so people can get to Victoria easily (30 minute flight). Alternately, we could have the bus drive everyone to Victoria via the ferry, which would be much more scenic. Let me know if this works; we can work out the details later. Cheers, Mike Vetterli 7

LCG • • • Again and again… CERN migration to SLC 4 Change to SL 4 64 -bits needs a new version of VDT Distribution still expected “in October” ? Some LXPLUS and BATCH nodes already on SL 4 SLC 4 full rollout at CERN still “in the autumn” ? Well planned transition period: – When do the sites change over ? – When do the experiments change over ? – When do we stop the support for the SL 3 version ? 8

Storage Class Implementations Task Force LCG Charter: to discuss the implementation of the storage classes as defined for SRMv 2. 2 for the sites People: – – – – – Artem Trunov (IN 2 P 3) Chair Jan van Eldik (CERN) Mark van de Sanden (SARA) Artem Trunov (CMS and Alice, IN 2 P 3) Lionel Schwarz (IN 2 P 3) Graeme Stewart (Glasgow) Jos van Wezel (Grid. Ka) Adrià Casajús (PIC) Eileen Berman (FNAL) Several phone meetings held during the summer First report given at the SRMv 2 workshop last week: http: //agenda. cern. ch/full. Agenda. php? ida=a 063257 9

VOBoxes LCG • Class 1 (not so bad) – Can access site's services (and work correctly) from a private network. • Class 2 (very bad) – Uses 'private' interfaces to access information/services at the site (i. e. not exposed to those beyond the site's firewall). • Priority: Eliminate Class 2 services first – – Reduce security issues with VO services “inside” site. Permit alternate, more flexible deployment scenarios. 10

Class 2 services LCG 1. Package management (ALICE) – – Needs to be simple, bare-bones implementation initially. EGEE/JRA 1 has been discussed in the TCG: No priority !? Erwin Laure 2. SRM v 2 (CMS) – Need “list” functionality in SRM to ensure consistency between SE and central catalogs. – srm. Ls now in SRMv 2. 2 for January 2007 – CMS already confirmed, performance to be seen – Stefano Belforte 11

LCG • • Class 1 services Development Priorities Consistent Security Framework Erwin Laure xrootd as SE transport protocol (ALICE only) NN Eliminate use of shared credentians Markus Schultz SFT (Site Functional Tests) Pjotr Niczik Mechanism for publishing VO services Laurence Field Messaging and notification NN Monitoring via monalisa NN General VO service framework NN Let us come back to this at the next GDB 12

LCG • • Tebi. Bytes (240) or Tera. Bytes (1012) Difference is ~12% for a PByte Vendors: 1012 RAL: 240 PIC: 240 ALICE: 240 CERN: buys in 1012 but accounts in 240 Bernd: differences of ~10% depending on the usage Conclusions ? ? : • The experiment’s requirements are in 240 • The numbers in the Mo. U tables are also in 240 ? • The sites buy in 1012 but add 12% when ordering 1 PB ? • Do the sites add another 10% for actually delivered space ? • We keep talking about TBytes although we mean Tebi. Bytes ? Just to make sure we all use the same rules and units … 13

LCG Actions on VOMS • Jeff (Ronald actually) : yaim changes • KB email to experiments to push users to re-register. Final date for re-registration October 1 st, testruns without LDAP until December 31 st. • Ian Bird to check there is no dependency in the middleware on LDAP Grid. Map files • d. Cache and CASTOR to tell us their ready-ness for VOMS (is DPM ready then? ) • Postpone this agenda point to the October GDB 14

LCG Super Computing 2006 • SC 06 is in Tampa, Florida Nov. 11 -17 – http: //sc 06. supercomp. org/ • • There is a first time EGEE booth CERN participates with Cal. Tech and FNAL/SLAC Do we want to make a common WLCG demo ? RAL, FNAL, ANL, NL are close to each other – http: //sc 06. supercomputing. org/pdf/eh_floorplan. pdf • • • All booths are in one big hall this time An interoperability demo ? Any common video’s RB monitor, network monitor? Any common flyers? Posters? Or are we ‘too busy’ ? 15