WLCG Collaboration Workshop (Tier0/Tier1/Tier2)

21 Apr 2008, 09:00 → 25 Apr 2008, 18:00 Europe/Zurich

Main auditorium (CERN)

Possible themes:

• WLCG Service Reliability: focus on Tier2s and progress since November 2007 workshop (1 day?)
• CCRC'08 & Full Dress Rehearsals - status and plans (2 days?)
• Operations track (2 days, parallel)
• Analysis track (2 days, parallel)

Invited talks:

• LHC status
• Experiment commissioning and first papers...
• EGI_DS status
• ...

A WLCG Collaboration Board meeting has also been scheduled for this week - agenda.

ARRIVAL AT GENEVA COINTRIN AIRPORT

Free tickets - valid for 80 minutes - are available for passengers arriving at Geneva airport. More details

Tickets are also given at Geneva hotels & hostels for the duration of your stay! (Doubt that this is true for the CERN hostel!)

GETTING TO CERN AND ACCOMMODATION

Information on how to get to CERN can be found here.

The CERN hostels page can be found here, together with a list of nearby hotels. (No block bookings have been made at the CERN hostel!)

VISITORS' PORTABLES: NETWORK ACCESS

Registration of Computers is mandatory at CERN: register your portable computer.
You must register the MAC address of all network interfaces that you plan to use.

1. Visitors WITHOUT a CERN Computing Account:
   • Register here
2. Visitors or CERN users WITH a CERN NICE/mail account:
   • Register here (Attention: CERN Intranet page - register when at CERN)

MAILING LIST OF ATTENDEES

wlcg-workshop-apr08@cern.ch

Attendance Certificate certificate.pdf

Monday, 21 April

WLCG Service Reliability Session

1 The Goals - WLCG MoU Targets & Experiment Critical Services Lists

Speaker: Jamie Shiers (CERN)

Slides wlcg-collaboration-workshop-intro.pdf wlcg-collaboration-workshop-intro.ppt

Video in CDS Video in CDS

Video in CDS Video in CDS

2 The Techniques: middleware developers' golden rules

Speaker: Gavin McCance (CERN)

Slides Middleware.pdf Middleware.ppt

Video in CDS Video in CDS

3 The Techniques: deployment strategies (application DNS load balancing, Oracle Maximum Availability Architecture)

Speaker: Jacek Wojcieszuk (CERN)

Slides WLCG_collaboration_workshop.pps

Video in CDS Video in CDS

4 Measuring What We Deliver & Problem Resolution Targets

Speaker: Julia Andreeva (CERN)

Slides WLCGws.pdf WLCGws.ppt

Video in CDS Video in CDS

10:30 coffee break

5 Middleware & experimentware surveys - how do we rack up?

Speaker: Maarten Litmaath (CERN)

Slides ML080421.pdf ML080421.ppt

Video in CDS Video in CDS

6 Testing Experiment Services - SAM tests et al

Speaker: Patricia Mendez Lorenzo (CERN)

Slides wlcg-april2008-sam.pdf wlcg-april2008-sam.ppt

Video in CDS Video in CDS

7 Atlas Central Services Operations

Speaker: Birger Koblitz (CERN)

Slides Atlas_CS_WLCG.pdf

Video in CDS Video in CDS

12:30 lunch break

WLCG Storage Issues

Note-takers:

• Dirk Duellmann
• Paul Millar

Notes Notes_from_Storage_Session.txt

8 Storage Performance Issues, Monitoring etc.

This session will discuss how to improve the performance of tape-backed MSS systems (or what the experiments could/should do to give hints to the system).

(experiences, suggestions for dCache and Castor, etc.).

See also: { One and the same monitoring tool is needed for tapes for all T1’s. Action on: Jamie Shiers } We have another use case, but this is primarily for CERN. We still have users reading from tape and we didn't know. Actually there are hundreds of tapemounts per day for reading by users and we didn't know. If we would have had any monitoring we would have been able to spot this much earlier. Now we learned for the first time in a presentation by Tim Bell.

Example of basic stats:
https://sls.cern.ch/sls/service.php?id=CASTORATLAS_T0ATLAS

Slides http://indico.cern.ch/getFile.py/access?sessionId=10&resId=0&materialId=0&confId=20228

Video in CDS Video in CDS

9 SRM v1.1 de-commissioning plan and timetable

We will discuss the concrete targets of:

• mid 2008 (i.e. end June)
• end 2008

Speaker: Dr Flavia Donno (Flavia.Donno@cern.ch)

Slides wlcg-april2008-SRMv1.pdf wlcg-april2008-SRMv1.ppt

Video in CDS Video in CDS

15:30 coffee break

10 Summary of recommendations / proposals regarding SRM v2.2 (for May and perhaps beyond...)

Speaker: Flavia Donno (CERN)

DRAFT SRM v2.2 addendum http://indico.cern.ch/getFile.py/access?contribId=14&sessionId=0&resId=0&materialId=paper&confId=6552

Paper WLCG_SRMv22_Memo-05.pdf

Slides

• wlcg-april2008-storage-01.pdf
• wlcg-april2008-storage-01.ppt
• wlcg-april2008-storage.pdf

Video in CDS Video in CDS

11 Data (access) security issues

Speaker: The WLCG Storage Solution Working Group

Paper https://twiki.cern.ch/twiki/pub/LCG/GSSD/VOMS-ACLs_Proposal.pdf WLCG_SRMv22_Memo-05.pdf

Video in CDS Video in CDS

Tuesday, 22 April

ATLAS session

agenda http://indico.cern.ch/conferenceDisplay.py?confId=22138#2008-04-22

Review of February (and March) runs of CCRC'08

Note-takers:

• Maarten Litmaath
• Patricia Mendez Lorenzo

More Notes February-notes.pdf

Notes CCRC08-1-review-notes.txt.txt

12 CCRC08 - View from WLCG Service

Speaker: Jamie Shiers (CERN)

Slides ccrc08-Apr22.pdf ccrc08-Apr22.ppt

Video in CDS Video in CDS

13 CCRC08 - View from Sites

Speakers: Derek Ross (RAL), Harry Renshall (CERN), Ian FISK (US-CMS)

Slides

• ccrc08-ral-pov.pdf
• WLCG_FNAL_Feb.pdf
• wshopapril2008sitereview.pdf
• wshopapril2008sitereview.ppt

Video in CDS Video in CDS

10:30 coffee break

14 ATLAS summary - lessons learnt and things to be improved

Speaker: Kors Bos (NIKHEF, ATLAS, CERN)

Slides CCRC08-ATLAS-for-WLCGWorkshop.pdf CCRC08-ATLAS-for-WLCGWorkshop.pptx

Video in CDS Video in CDS

15 CMS summary - lessons learnt and things to be improved

Speaker: Daniele Bonacorsi (INFN, CMS)

Slides 080422_CCRCphaseI-CMS-DBonacorsi.pdf

Video in CDS Video in CDS

12:30 lunch break

16 ALICE summary - lessons learnt and things to be improved

Speaker: Latchezar Betev (CERN)

Slides WLCG_ALICE_report.pdf WLCG_ALICE_report.ppt

Video in CDS Video in CDS

17 LHCb summary - lessons learnt and things to be improved

Speaker: Roberto Santinelli (CERN)

Slides wlcg-april2008-lhcb-postmortem.pdf wlcg-april2008-lhcb-postmortem.ppt

Video in CDS Video in CDS

18 Panel on Support Issues

Speaker: Supporters, Experiments, Sites, ...

list of actions http://cern.ch/dimou/lcg/UserSupport/WLCG_panel_20080422

Slides

• atlas-ggus.pdf.pdf
• LHC_Requirements_to_GGUS.pdf
• LHC_Requirements_to_GGUS.ppt
• Nagios_-_GGUS.pdf
• Nagios_-_GGUS.ppt
• Support_Panel.pdf
• Support_Panel.ppt

Video in CDS Video in CDS

15:30 coffee break

19 The Metric - as a Common Challenge, involving all experiments and sites, how did we do overall?

Panel discussion + summary

Speaker: Previous speakers, site representatives, ...

Video in CDS Video in CDS

Wednesday, 23 April

Planning for May run of CCRC'08

Important to stress not only the 'Computing Model' styles of steady-state operation, but also the more chaotic data access patterns that are likely to typify early data taking (e.g. more requests from more sites to access to raw/ESD files - impact on resources...)

Note-takers:

• Simone Campana
• Pablo Saiz

Notes Notes_from_WLCG_wednesday.txt

20 The LHC Status and Schedule

Speaker: Jos Engelen (CERN)

Slides wlcg.pdf wlcg.pptx

Video in CDS Video in CDS

21 Resource / Service Review - What can we count on for 2008 production?

Speaker: Harry Renshall (CERN)

Slides wshopapril2008resources.ppt

Video in CDS Video in CDS

10:05 coffee break

22 ATLAS Status, Plans and Requirements for May run and beyond

Speaker: Kors Bos (NIKHEF, CERN, ATLAS)

Slides CCRC08-2-ATLAS.pdf CCRC08-2-ATLAS.pptx

Video in CDS Video in CDS

23 LHCb Status, Plans and Requirements for May run and beyond

Speaker: Nick Brook (University of Bristol, LHCb)

Slides LHCb_CCRCApr08.pdf

Video in CDS Video in CDS

12:05 lunch break

24 CMS Status, Plans and Requirements for May run and beyond

Speaker: Daniele Bonacorsi (INFN & CMS)

Slides 080423_CCRCphaseII-CMSplans-DBonacorsi.pdf

Video in CDS Video in CDS

25 ALICE Status, Plans and Requirements for May run and beyond

Speaker: Latchezar Betev (CERN)

Slides WLCG_ALICE_plans_req.pdf WLCG_ALICE_plans_req.ppt

Video in CDS Video in CDS

26 Baseline Middleware Versions - what is in production

Speakers: Markus Schulz (CERN), Oliver Keeble (CERN)

Slides ccrc08-baseline-may-keeble.pdf ccrc08-baseline-may-keeble.ppt

Video in CDS Video in CDS

27 Baseline storage-ware versions - what is in production

Speaker: Flavia Donno (CERN)

Slides ccrc08-baseline-may-storage.pdf ccrc08-baseline-may-storage.ppt

Video in CDS Video in CDS

14:55 coffee break

28 Follow-up on Action Items from April CCRC'08 F2F

Some of the topics:

• Common convention for operator alarm mailing lists
  • For CERN, -> vo-operator-alarm@cern.ch; co-owned by experiment and IT; only list-members may post
  • For external sites; implement NIKHEF's solution
• Dashboards: need clear agreement on what sites should look at (site view?)
• Intervention notifications - including also 'transparent' ones...
• Negotiation of site configuration for an experiment
  • Queue time limits
  • Shares
• How do sites figure out what is going on?
• (Support issues discussed earlier - conclusion(s)?)

Slides from April GDB http://indico.cern.ch/getFile.py/access?sessionId=7&resId=0&materialId=0&confId=20228

Video in CDS Video in CDS

WLCG Intervention Procedures wlcg-interventions.pdf

29 Running, monitoring and measuring the challenge

Video in CDS Video in CDS

30 CCRC'08 Post-mortem workshop in June (12-13)

agenda http://indico.cern.ch/conferenceOtherViews.py?view=standard&confId=23563

Video in CDS Video in CDS

WLCG Collaboration drink

Thursday, 24 April

ATLAS Tier1 Jamboree

ATLAS Jamboree agenda http://indico.cern.ch/conferenceDisplay.py?confId=22138#2008-04-24

Operations Session 1

Note-takers

• Juergen Knobloch
• Laura Perini

Session Notes EGI_session_LP_JK.pdf

31 The European Grid Initiative Design Study - EGI_DS

Speaker: Dieter Kranzlmueller (GUP)

Slides 20080424_Kranzlmueller_-_Geneva_-_WLCG_Collaboration_Workshop_-_The_European_Grid_Initiative_Design_Study_-_EGI_DS.pdf 20080424_Kranzlmueller_-_Geneva_-_WLCG_Collaboration_Workshop_-_The_European_Grid_Initiative_Design_Study_-_EGI_DS.ppt

Video in CDS Video in CDS

32 On the Transition to EGI - Requirements from WLCG and Related Projects

Speaker: Ian Bird (CERN)

Slides IGB-EGI-LCGReqs-240408.pdf IGB-EGI-LCGReqs-240408.pptx

Video in CDS Video in CDS

10:45 coffee break

33 Overview of EGEE III operations

Speaker: Maite Barroso Lopez (CERN)

Slides wlcg-workshop-230408.pdf wlcg-workshop-230408.ppt

Video in CDS Video in CDS

12:00 lunch break

Monitoring Tutorial(s)

34 Overview and Welcome

Speaker: James Casey (CERN)

Slides 08004-WLCG-tutorial-intro.pdf 08004-WLCG-tutorial-intro.pptx

35 Introduction to Nagios

* Introduction to Nagios * Nagios Concepts * Active/Passive checks * The Nagios Web Interface * How to write Nagios Check scripts * Other Nagios tools * NRPE

Speaker: Dr Chris Brew (CCLRC - RAL)

Slides WLCG_nagios_0408.pdf WLCG_nagios_0408.ppt

36 Nagios for grid services

* Using Nagios for monitoring grid services * Security considerations * WLCG Monitoring WG Solution * Architecture and components * NCG details * Examples of deployment

Speaker: Emir Imamagic (Unknown)

Slides Nagios_for_Grid_Services.pdf Nagios_for_Grid_Services.ppt

37 Questions + Feedback from sites

- Is this useful ? - how would you use it - what would you like to see done differently?

15:00 break

38 Monitoring a Region using Nagios

* Current usage * Possible approaches * Integration with site monitoring * Integration with central reporting

Speaker: Steve Traylen (CERN)

Slides WLCG-Operations-Regiona-Monitoring-20080424.pdf

39 Site experience in installing NCG

Feedback of NCG deployment tests at IN2P3-CC. Explanation of the tests made en issues encountered.

Speaker: Pierre Emmanuel Brinette (IN2P3-CC, Lyon)

Slides 20080424_--_Site_experience_in_installing_NCG_1.pdf 20080424_--_Site_experience_in_installing_NCG_1.ppt

40 NagiosGrapher - viewing the history of metrics

Speaker: Felix Nikolaus Ehm (Unknown)

Slides WLCG-NagiosGrapher.pdf WLCG-NagiosGrapher.ppt

41 An interoperation example - the OSG approach

Speaker: Rob Quick (OSG - Indiana University)

Slides RSV-Nagios.pdf RSV-Nagios.ppt

Database Track

42 Up-coming Challenges and Opportunities for DB Services in WLCG

Speaker: Jamie Shiers (CERN)

Agenda of CCRC'08 Post-Mortem Workshop http://indico.cern.ch/conferenceOtherViews.py?view=standard&confId=23563

43 DBA Q & A Session

A collection of "hot" DBA topics from Alexander / Doris / John / Carlos

Speaker: Carlos Gamboa (Brookhaven National Lab)

Slides

• comments_dba_questions_wlcg2008.pdf
• comments_dba_questions_wlcg2008.ppt
• db_questions_wlcg_2008-1.pdf
• db_questions_wlcg_2008-1.ppt

WLCG Collaboration Board (restricted)

agenda http://indico.cern.ch/conferenceDisplay.py?confId=28071

slides ccrc08-Apr24.pdf ccrc08-Apr24.ppt

CMS Tier1/Tier2 session: CSA/CCRC preparations

agenda http://indico.cern.ch/conferenceDisplay.py?confId=32361

Friday, 25 April

Operations Session 2

Note-takers:

• Tiziana Ferrari
• Laura Perini

Notes notes-operations-panel-discuss.txt

44 Future WLCG Operations Scenarios - Introduction to Panel Discussion

Speaker: Jamie Shiers (CERN, WLCG & EGI_DS)

Slides wlcg-collaboration-operations-futures.pdf wlcg-collaboration-operations-futures.ppt

45 Scenarios for implementing Operations Tasks in EGI - Introduction to Panel Discussion

Speaker: Laura Perini (INFN, EGI_DS, ATLAS)

Slides EGI-op.pdf EGI-op.ppt

46 Future WLCG Operations / VO Support - Panel Discussion

Following on from yesterday's discussion on EGI and the EGEE III transition, how do we prepare for the smooth transition to operations and VO / Applications Support in the late 2009 - 2012 era?

N.B. as this is a WLCG Workshop, the intent here is to understand things in terms of WLCG requirements and priorities, although clearly a solution compatible with EGI/NGI directions and applicable to other applications would be of interest!

11:15 coffee break

47 WLCG Monitoring Roadmap

Speaker: Julia Andreeva (CERN)

Slides WLCGws25.pdf WLCGws25.ppt

12:30 lunch break

48 Information Technology Infrastructure Library (ITIL)

Speaker: John Shade (CERN)

Slides WLCG_ITIL_Overview.pdf WLCG_ITIL_Overview.ppt

49 WLCG Operations sessions

15:30 coffee break

50 Workshop Close-out

Speakers: Jamie Shiers (CERN), Milos LOKAJICEK (Prague)

Prague Workshop wlcg_prague.pdf wlcg_prague.pptx

(Revised) agenda of post-mortem workshop http://indico.cern.ch/conferenceOtherViews.py?view=standard&confId=23563

Slides wlcg-collaboration-workshop-closeout.pdf wlcg-collaboration-workshop-closeout.ppt

Database Track

51 DB service upgrade and streams intervention responsibilities

Speakers: Eva Dafonte Perez (CERN), Maria Girone (CERN)

Slides

• Streams_intervention_responsabilities.pdf
• Streams_intervention_responsabilities.ppt
• WLCG-Apr2008.pdf
• WLCG-Apr2008.ppt

52 DB availability and performance page

53 Experiments' updates: new DB applications and deployment plans

e.g. DQ2 / AMI replication (Contributions by ATLAS/CMS/LHCb)

Speaker: Florbela Viegas (CERN)

Slides

• AMI_Solveig.pdf
• AMI_Solveig.ppt
• Atlas_florbela_pdf.pdf
• CMS-Frontier-deployment-20080425.pdf
• CMS-Frontier-deployment-20080425.ppt
• DQ2_Pedro.pdf
• LHCb_Marco.pdf
• Main_fjv
• SashaforFlorbela_mod.pdf
• SashaforFlorbela_mod.ppt

10:55 coffee break

54 Transportable table spaces for scalable re-instantiation

(Contributions from Dirk/Eva)

Speaker: Eva Dafonte Perez (CERN)

Slides TransportableTablespacesResynchronization.pdf TransportableTablespacesResynchronization.ppt

55 Summary of the status and plans of FTS and LFC back-end database installations at Tier-1 Sites

Speaker: Gordon David Brown (Unknown)

Slides WLCG2008CERN.pdf WLCG2008CERN.ppt

56 Experiment connectivity requests and firewall update

Speaker: Dirk Duellmann (CERN)

12:30 lunch break

57 DB server limits (processes/sessions), session sniping

Contributions by Carlos/Andrew

Speaker: Carlos Gamboa (BNL)

Slides

• resources_profiles_sessions_wlcg2008-1.pdf
• resources_profiles_sessions_wlcg2008-1.ppt
• resources_profiles_sessions_wlcg2008_1.ppt
• resources_profiles_sessions_wlcg2008.pdf

58 New storage back-ends, storage performance

Contributions by Luca and Luis

Speaker: Luca Canali (CERN)

Slides Storage_Studies_WLCG_workshop_25-4_LC.pdf Storage_Studies_WLCG_workshop_25-4_LC.ppt

15:00 coffee break

59 Experience with 32 to 64 bit migrations

Speaker: Carlos Gamboa (Unknown)

Slides BNL_MIGRATION_EXPERIENCE_WLCG2008-1.pdf BNL_MIGRATION_EXPERIENCE_WLCG2008-1.ppt