1. Christos Markou Institute of Nuclear Physics NCSR ‘Demokritos’
GRID Computing
Christos Markou
Institute of Nuclear Physics
NCSR ‘Demokritos’
ECFA meeting, 10/10/2008, Athens, Greece

2. ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'
Contents
Motivation
Partners
Projects
Hellasgrid
Where we stand
Challenges
ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'

3. ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'
Motivation
Greek participation to ALICE, ATLAS and CMS experiments
HEP community has realized early enough that the management and processing of the LHC data pose unique challenges, requiring novel solutions:
Extreme diversity in geographical location,
of research groups and resources, differences
in administration procedures, the extremely
large datasets, long CPU processing times,
intensive I/O, require:
Integration of all available computing and storage resources
Access to resources through unified/transparent interfaces
Unique/single user sign-on, identification and authentication
Efficient management of code and data sets
…….
ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'

4. ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'
The Grid and related technologies seem able to serve these purposes well (especially today after a long and difficult path of development which lasted for almost a decade).
Chosen as the solution for the LHC computing infrastructure.
Greek HEP groups got involved in Grid related projects and activities.
ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'

5. ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'
Partners
All the HEP groups in Greece, i.e:
Institute of Nuclear Physics, NCSR ‘Demokritos’ (CMS)
University of Athens (ALICE, ATLAS and CMS)
National Technical University of Athens ( ATLAS)
University of Thessaloniki (ATLAS)
University of Ioannina (CMS)
Collaborating with
GRNET SA – the Greek Academic network provider, and leading the Grid efforts in a nation-wide context
Computer Science departments in UoA, NTUA, AUTh, UoP, etc…
ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'

6. Projects – Grid evolution in Greece
First steps in middleware related projects funded by the EU, like CrossGrid , et al …
Middleware testing and validation of production-grade software
Configuration, operation and maintenance of production testbeds
Gain expertise and know-how
Build collaborations and links with other national and international groups.
First small scale Grid clusters built and maintained through these efforts
Great learning experience!!
ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'

7. ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'
Participation in more mature projects like EGEE ( ), EGEE-II ( ), EGEE-III ( ), GridCC, SEE-Grid, etc…
Infrastructure support and operations
Grid Core services
User Support and Application support
Middleware development, testing and validation
Software deployment coordination
Certification and Registration authorities
User training
ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'

8. HellasGrid-Towards a National Grid Infrastructure
Goal:
Promote Grid technologies in Greece
Build infrastructures
Support operations and maintenance
Overseen by:
the General Secretariat of Research and Technology of the Ministry of Development
Funding:
Through the Greek Information Society programme in the context of the 3rd Community Support Framework
Initial budget of ~ € 1.7 mn
ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'

9. ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'
HellasGrid MoU
hellasgrid Memorandum of Understanding signed by 24 institutions
Joint Research Unit Committee
Scientific Committee
Duration: until 31/12/2013
Members undertake joint actions in Grid projects (EGEE, SEE-GRID, etc.)
Members support and use the hellasgrid infrastructure according to the AUP
Members coordinate on Certification Authority and Registration Authorities
ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'

10. HellasGrid administration
6 Grid Operation Centres (GOCs):
HG-01-GRNET
HG-02-IASA
HG-03-AUTH
HG-04-CTI
HG-05-FORTH
HG-06-EKT
GRNET on the top
Next layer, the Coordination Control Center for GOCs (C3GOCs):
Responsible for the interactions between GRNET and the local GOCs
All GOCs are responsible for the local management of their Nodes:
Responsible for the updating, new methods and tools for new management services implementation
All GOCs support and service a multitude of VOs.
ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'

11. Where we stand at the moment
13 Grid clusters operating in Greece (as accounted by EGEE)
6 HellasGrid nodes – Funded by the HellasGrid initiative
7 Independent nodes – Funded by the hosting Institutes
(limited resources and manpower)
ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'

12. ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'
Grid infrastructure
HG-01-GRNET : 64 CPUs, 10TB Disk Storage, 10TB Tape Storage
HG-02-IASA : 128 CPUs, 4TB Disk Storage
HG-03-AUTH : 128 CPUs, 4TB Disk Storage
HG-04-CTI-CEID : 128 CPUs, 4TB Disk Storage
HG-05-FORTH : 128 CPUs, 4TB Disk Storage
HG-06-EKT : 256 CPUs, 12TB Disk Storage
GR-01-AUTH : 100 CPUs, 4TB Disk Storage
GR-03-HEPNTUA : 32 CPUs, 1TB Disk Storage
GR-04-FORTH-ICS
GR-05-DEMOKRITOS : 150 CPUs, 20TB Disk Storage
GR-06-IASA : 20 CPUs, 1TB Disk Storage
GR-07-UOI-HEPLAB : 28 CPUs, 2,5TB Disk Storage
GR-09-UOA : 10 CPUs, 2TB Disk Storage
All sites have Gigabit connectivity with GRNET
Soon to be expanded with
240 new cores
160 TB Storage
ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'

13. ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'
HG-03-AUTH
GR-01-AUTH
GR-07-UOI-HEPLAB
HG-01-GRNET
HG-02-IASA
HG-06-EKT
GR-03-HEPNTUA
GR-05-DEMOKRITOS
GR-06-IASA
GR-09-UOA
HG-04-CTI-CEID
HG-05-FORTH
GR-04-FORTH
ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'

14. ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'

15. ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'
Grid usage per VO
ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'

16. ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'

17. ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'
Challenges
Active Grid community in Greece, BUT HEP should focus on their specific needs.
Dedicated infrastructure and manpower are necessary.
MoU for LHC computing and targeted funding are an absolute requirement!
ECFA meeting, 10/10/2008, Athens, Greece C. Markou, NCSR 'Demokritos'