1. Production Grid Infrastructure WG PGI Use Cases How Grid applications benefit from PGI
Morris Riedel (FZJ – Jülich Supercomputing Centre & DEISA)
PGI Co-Chair …and many others…

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3. Outline 3

4. Outline Interoperability Motivation The WISDOM Use Case
Work towards the Virtual Physiological Human
Identified Basic Use Case
Interoperability Reference Model (aka n profiles?!)
Summary
Acknowledgements 4

5. Interoperability Motivation5

6. Interoperability Motivation (1)
More variety of resources
Access to a broader variety of resources
E.g. convenient usage of different types of resources (HPC / HTC resources) in mutliple infrastructures
Consider a larger range of scales, many different HPC machines!
Extending the functionality
Smart way of extending the functionality of one infrastructure
E.g. brokering mechanism in HTC vs. explicit choose of computing resources in HPC
Enhanced Resource Utilization
Better load-balancing between different kind of computing infrastructures and their resources
Combine resources of different infrastructures for more realistic simulations 6

7. Interoperability Motivation (2)
Economic Considerations
Economic way of synergetic development avoids duplicate technology development
Save computational time on rare and costly HPC resources,
E.g. perform smaller evaluation jobs on HTC infrastructures before going to ‘full-blown’ production runs on HPC infrastructures with large-scale resources
After full-blown HPC production runs – scientists are able to run directly in turn HTC evaluation jobs
Reduce the overal data size to be stored on storage systems
(Future: Storage might becomes more expensive than flop/s) 7

8. The WISDOM Use Case 8

9. The WISDOM Use Case (1) 9

10. The WISDOM Use Case (2) 10

11. Work Towards the VPH 11

12. Work Towards the VPH (1) 12

13. Work Towards the VPH (2) 13

14. Identified Basic Use Case14

15. Basic Use Case – Part 1
WISDOM, VPH & other use cases have similiar approach
Basic use case identified in production Grids is as follows:
On behalf of an authorized user, …
… a tool interrogates the information system (representing a grid or a single resource), locates an optimal execution resource,…
… submits the job to the execution resource, …
… which in turn interprets the submitted job description…
… and locates and fetches the necessary input data …
from a remote storage - …
… also on behalf of the user.
Attributes
GLUE
OGSA-BES
JSDL
GridFTP
SRM
Delegation 15

16. Basic Use Case - Part 2
Upon the completion, the newly created data is uploaded …
… to a storage resource …
where this user is authorized (as a member of a Virtual Organization),
…registered in the necessary data indexing catalogs, …
…and the job record is updated in the accounting …
… and monitoring system…
 Question is how they all can work correctly together?!
GridFTP
SRM
Attributes
WS-DAIS UR
RGMA? 16

17. Interoperability Reference Model17

18. Interoperability Reference Model
Reference Model Input: Work in progress in PGI 18

19. Early adopters 19

20. Production Grid Infrastructure (PGI) Standard
Early adopters
EGI UMD
Production Grid Infrastructure (PGI) Standard
GENESIS-II
gLite
ARC
UNICORE 20

21. Summary 21

22. Summary Production Grid Infrastructure Interoperation
Many use cases that point to open problems / missing links
The WISDOM Use Case
Work towards the Virtual Physiological Human (VPH)
Basic use case is already supported by many open standards, but not working directly together
Missing links between various specifications, tunings necessary
Refinements necessary for joint use of vertical plumbings (i.e. security/information) with horizontal services (BES, SRM,…)
Infrastructure Interoperability Reference Model
Initial input from GIN production experience and use cases
Work in progress for PGI working group
Benefits
Effective use of both HTC and HPC application chains accross multiple existing infrastructures
Support of multi-scale and mulit-physics applications 22

23. Acknowledgements 23

24. Morris: Acknowledgements
Morris Travel and Participation in OGF is funded by…
Distributed European Infrastructure for Supercomputing Applications (DEISA)
DEISA2 is funded by the European Commission in FP7 under grant agreement RI
Jülich Supercomputing Centre (JSC) of Forschungszentrum Jülich (FZJ) in the HELMHOLTZ association

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