Post on 30-Dec-2015
description
Bob Jones –April 19, 2023- n° 2
Overview
Testbed status
Application status
Project retreat Issues and actions for software process, current (EDG 1.2) and
future releases
Tutorials
Summary
Bob Jones –April 19, 2023- n° 3
Testbed Status
Application testbed Running EDG 1.2 on 5 core sites (and a couple of others)
Since first week of August (several months later than initially planned)
Users guide and release notes available (installation guide will come later)
Being used for application tests Current “show-stopper” issues found:
Long job status problem (can’t retrieve output) Long file transfers problem (20 mins limit)
Development testbed Testing urgent updates to EDG 1.2
More recent beta release of Globus 2 Various fixes for data management chain
Bob Jones –April 19, 2023- n° 4
Application Status WP8: High Energy Physics
LHC experiments doing tests now
ATLAS task force
WP9: Earth Observation Installation of EDG 1.2 at ESA done
Testing to start in September
WP10: Biology Initial tests made with EDG 1.2
Overall comments: General confusion about how best to use data mgmt tools
Software not yet stable enough and insufficient diagnostics information available
Too difficult to configure
Concern that EDG 1.2 in its current configuration will not scale easily to ~40 sites
Bob Jones –April 19, 2023- n° 5
ATLAS Task Force Task for with ATLAS & EDG people (lead by Oxana Smimova)
http://cern.ch/smirnova/atlas-edg
ATLAS is eager to use Grid tools for the Data Challenges ATLAS Data Challenges are already on the Grid (NorduGrid, iVDGL)
The DC1/phase2 (to start in October) is expected to be done mostly using the Grid tools
By September 16 (ATLAS SW week) evaluate the usability of EDG for the DC tasks
The task: to process 5 input partitions of the Dataset 2000 at the EDG Testbed + one non-EDG site (Karlsruhe)
Intensive activity has meant they could process some partitions but problems with long running jobs is still an issue
Data Management chain is proving difficult to use and sometime unreliable
Need to clarify policy for distribution/installation of applications software
On-going activity with very short-timescale: highest priority task
Bob Jones –April 19, 2023- n° 6
Project Retreat Project retreat held last week (27 & 28 August) at Chevannes
~45 participants work package managers, architecture group, quality group,
applications groups, mware experts, representatives from LCG, DataTAG, Globus & Condor
Agenda and material on the web: http://documents.cern.ch/age?a021130 Photos by Jeff Templon
http://www.nikhef.nl/~templon/chavannes/index.html
3 sessions addressing most important aspects of projects current work: Software Release Process
Release 1.2
Testbed 2
Bob Jones –April 19, 2023- n° 7
Software Process
Over-simplification of the current situation:
1. Mware groups develop software in isolation
2. ITeam assembles it as best it can
3. Site managers are asked to install it
4. Application groups are asked to test it
Problems:
No place for the mware groups to integrate software before delivering it to the ITeam
Inadequate software testing – leads to installation/configuration/execution faults
We are running blind – no way to control or reliably plan software delivery
Bob Jones –April 19, 2023- n° 8
Software Process: Autobuild
A release manager will be nominated with overall responsibility for ensuring the procedure is followed
Make autobuild tools the basis of the daily work of the mware groups and ITeam
Nightly build from CVS repository for all software Problems must be fixed ASAP – checked by Quality Group reps
Mware groups give ITeam CVS tags instead of RPMs Tagged software must be documented
Mware group must perform and supply unit tests Integrated with nightly build
Tagged software that fails the integration, testing or is inadequately documented will be rejected
Mware group is responsible for fixing it
Bob Jones –April 19, 2023- n° 9
Software Process: Quality Group
Recently formed Quality Group, convened by Gabriel Zaquine, is responsible for ensuring quality issues are addressed within the WPs
Ensure unit test plans are complete and followed
Follow-up on problems reported bugzilla & nightly builds
Organise running of code checking tools on all EDG software
Agree on adopted project developer-guidelines etc.
http://eu-datagrid.web.cern.ch/eu-datagrid/QAG/default.htm
Bob Jones –April 19, 2023- n° 10
Software Process: Testing
Strengthen the Testing Group Identify leader and a small number of full-time testers Assemble and maintain test suite integrated with autobuild tools
Automate installation and configuration of software releases To permit auto testing need to be able to auto install & configure a
release on a pre-defined small example site Needs improvements by mware WPs to simplify and complete installation &
configuration of their sw Site managers have good overview about how to do this
Need to clarify the work involved during this conference
Set-up certificate testbed Used for testing activities Involves several sites
Bob Jones –April 19, 2023- n° 11
Technical Management
Architecture group documenting testbed 2 architecture draft: http://doc.cern.ch/archive/electronic/other/agenda/a021130/a021130s4t1/TB2Arch_v0_1.doc
Meets once a month (next meeting tomorrow)
Project Tech. Board addresses deliverables and relationships with other projects Meets once per quarter (next meeting 2nd October @ CERN)
http://documents.cern.ch/AGE/current/displayLevel.php?fid=3l131
Need more frequent technical management forum Authority to make technical & architectural decisions affecting sw development in WPs
Include WP managers, chaired by the Technical Coordinator Can call on mware experts according to needs of the themed agenda
Meets frequently to ensure issues are addressed rapidly Associate with WP managers weekly meeting
Relationship with Architecture Group and Project Tech. Board needs to be clarified
Bob Jones –April 19, 2023- n° 12
Testbed Support
Strengthen user support group Ensure people involved have sufficient knowledge of the software Emphasis on the accurate and usefulness of the responses provided
Tools used for support are a secondary issue
Federate with equivalent groups from other projects Provides support on the application testbed
Clarify & document procedures Creating a new CA (CA group)
Need to reduce time involved (currently 3 months)
Site Installation (site managers & ITeam) Steps for system manager and requirements for a site to join the testbed
Creating & Managing a Virtual Organisation (site managers & ITeam)
Steps involved and tasks of a VO manager
Bob Jones –April 19, 2023- n° 13
Release Development
Continuous support
CVSAutobuild
Nightly build Incremental Improvements Continuous
Support
1.2
2.0
branch
Current “show-stoppers” fixed
Incremental Improvements from mware WPs2.x
Application testssatisfied
branch
Migrate sites
Etc.
patches
Changes foreseen for 1.3 & 1.4become “incremental improvements”
patches
Bob Jones –April 19, 2023- n° 14
Incremental Steps from EDG 1.2
1. Fix “show-stoppers” for application groups – mware WPs (continuous)
2. Build EDG1.2.x with autobuild tools - Iteam
3. Integrate testing framework and limited automatic tests with autobuild tools - testing group
4. Automatic installation & configuration procedure for pre-defined site (can’t auto test without it)
5. Start autobuild server for RH 7.2 and attempt build of release 1.2 – Yannick Patois
6. New LCFG - WP4
7. GridFTP server access to MSS - WP5
7. Giggle & Reptor – WP2
8. LCAS with dynamic plug-in modules – WP4
9. NetworkCost Function – WP7
10. Integrate mapcentre (nordugrid?) and R-GMA – WP3
11. GLUE modified info providers/consumers – WP1,4,5
12. Res. Broker – WP1
13. LCFG for RH 7.2 – WP4
14. Integration with Condor as batch system – WP4
What do we do about: Space mgmt, VOMS, slashrgrid?
EndSept2002
Expect this list to be
discussed/updated this week
Bob Jones –April 19, 2023- n° 15
EDG Tutorial
DAY1
Tutorial introduction
Introduction to Grid computing and overview of the DataGrid project
Security
Testbed overview
Job Submission
lunch
hands-on exercises: job submission
DAY2
Data Management
LCFG, fabric mgmt & sw distribution & installation
Applications and Use cases
Future Directions
lunch
hands-on exercises: data mgmt
The tutorials are aimed at users wishing to "gridify" their applicationsusing EDG software and are organized over 2 full consecutive dayshttp://hep-proj-grid-tutorials.web.cern.ch/hep-proj-grid-tutorials/dry.aspuser:griduser passwd:tutorials123
Bob Jones –April 19, 2023- n° 16
Tutorial rehearsal Rehearsal at CERN, 29 & 30 August
19 participants (members of project or closely related) to check material & approach
Lessons learnt Can’t cover as much material as we hoped (goes to fast)
Explain why not just how Avoid details – can read them from references afterwards
Need as many helpers as possible for hands-on exercises Participants have difficulties with certificate management
All participants must have a certificate ready for them and be in the same VO
Generated a lot of enthusiasm in the participants and EDG people doing the hands-on
Found genuine bugs during hands-on exercises Recommend mware WPs send developers to help with hands-on exercises New project people should follow the tutorial
Thanks to:
Mario Reale, Elisabetta Ronchieri, Akos Frohner, Erwin Laure, Peter Kunszt, Antony Wilson, Steve Fisher, Maite Barroso Lopez, Owen Synge, Emanuele Leonardi, Steve Traylen, Frank Bonnassieux, Christophe Jacquet, Sophie Nicoud, Karin Burghauser & CERN training people
Bob Jones –April 19, 2023- n° 17
Tutorial Schedule CERN school of Computing, Naples, 23-27 September
80 participants. Hands-on exercises only (presentations by Carl Kesselman & Ian Foster)
ALL EDG people attending should do exercises first and help others at the school
CERN, October 3 & 4
NeSC, Edinburgh, December Dates still moving. Maximum 30 participants (more for the presentations)
We could accommodate more sites in December, January etc. Sites must provide support and handle logistics
Organisers/helpers must attend tutorial at another site first
The tutorial does represent some load on the testbed (own VO & cert. creation)
For the future Hands-on exercises are a test suite - automate and run with the nightly checks The material must be kept up to date with each public release of the software
We need to nominate people responsible for the different chapters of the tutorial to be responsible for ensuring the slides and exercises are kept up to date
Bob Jones –April 19, 2023- n° 18
Summary Addressing the serious bugs found by the application groups on the
testbed is the task with the highest priority
Testing activities need more resources
Test-bed support is becoming a more important task
Future releases must continue to address the needs of the application groups
We need to clarify the following points during this conference: Autobuild status & how automate installation & configuration
Contents of the test-suites
Release plans until the next EU review
In short:What we are doing is right, we are just going about it in a sloppy manner
Need to go one step at a time and ensure each step works