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GRID

GRID. D . R oyo, O. Ardaiz, L. Díaz de Cerio, R. Meseguer, A. Gallardo, K. Sanjeevan Computer Architecture Department Universitat Politècnica de Catalunya. Outline. Internet GRID Globus ULabGrid Summary. Internet. 1962 (tcp/ip) 1994 (www) Used for:

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GRID

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  1. GRID D. Royo, O. Ardaiz, L. Díaz de Cerio, R. Meseguer, A. Gallardo, K. Sanjeevan Computer Architecture Department Universitat Politècnica de Catalunya

  2. Outline • Internet • GRID • Globus • ULabGrid • Summary

  3. Internet • 1962 (tcp/ip) • 1994 (www) • Used for: • EXCHANGE information (documents, messages, images, etc.)

  4. Outline • Internet • GRID • Globus • ULabGrid • Summary

  5. GRID • GRID (96): infrastructure that enables the use of computers (and resources in general) owned and managed by multiple organizations Networked virtual supercomputers: networks connecting supercomputers, DB, scientific instruments... distributed geographically

  6. GRID Applications • Smart instruments: Advanced scientific instruments coupled with supercomputers, users and databases. • Distributed supercomputing: to solve problems too large to fit on any single computer • Teraflop desktops: transfer intensive operations to more capable resources

  7. GRID Applications • Aplication Service Provider (ASP) and Computing farms • Service-oriented: Out-sourcing hardware, software, services in general • Access any resource through WWW • Software and hardware. Idea: the end-users do not acquiere the resources only uses them and pay for it

  8. Advantages • Save money • only a PC to access the net (save 30%) • management and maintenance (save up 65%) • Avoid hardware and software updates • ASP’s ensures the updating • Flexible information access • From anywhere at anytime

  9. Advantages • Possibility to solve new problems • Interoperability • Small users can access the service • Out-source the service is cheap

  10. System Key Characteristics • Heterogeneity at multiple levels • Hardware, software, networks, users, etc. • Multiple administrative domains • Security problems: authentication mechanism, acces policies, etc. • Fiability • Accounting

  11. Outline • Internet • GRID • Globus • UlabGrid • Summary

  12. Globus • What is Globus? Research and development project focused on enabling the application of Grid concepts to scientific and engineering computing To help to build GRIDS and develop GRID applications

  13. Globus Services • Basic modules • Resource Management (GRAM) • Communication (Nexus) • Information (MDS) • Security (GSI) • Helth & Status (HBM) • Remote Data Access (GASS) • Executable Management (GEM)

  14. Globus Services Applications and Higher level services Globus Toolkit modules Metacomputing Testbeds I-WAY/GUSTO

  15. Globus Services: Nexus • Communication services • Flexible Nexus Communication Library • Define communication links • Perform Remote Service Request (RSR) • Select the protocol for a RSR depending when, where and what is being communicated MPI: if diferent nodes of a parallel computer TCP/UDP: if different computers reliable/unreliable

  16. Globus Services: GridFTP • Data Transfer Protocol: GridFTP • Parallel data transfer: multiple TCP streams • Partial file transfer • Striped data transfer: partitioning data across multiple servers

  17. Outline • Internet • GRID • Globus • ULabGrid • Summary

  18. ULabGrid Student Student Student Student Web Browser Web Browser Web Browser Web Browser ULabGrid School 1 School 2

  19. %Vnc-server:1 %nam & 6->Interact with NAM GassServer Globus-Gatekeeper GassServer Globus-Gatekeeper Pentium IV pcmartino.ac.upc.es Pentium IV pc4.ac.upc.es VNC-client 4->Exec VNC, Exec NAM 5-Return VNC port GassServer Globus-Gatekeeper Pentium IV pc5.ac.upc.es GassServer Globus-Gatekeeper Session Scheduler Pentium IV pc3.ac.upc.es Grid-Proxy GassServer GlobusPortal User Directory 2->Launch NAM GassServer Globus-Gatekeeper Web Browser Pentium IV pc5.ac.upc.es Student Resource Mgr ReplicaMgr MetadataDirectoryServer ULab Grid 3->Put User Files Pcribes.ac..upc.es 1->Deploy Application GSSHFTP Globus-Gatekeeper File Server avant.upc.es Instructor: Manages Ulab Apps

  20. ULabGrid Modules • Session Scheduler • Resource Management • Collaborative services • File Management • Tool management and deployment

  21. Advantages of using ULabGrid • Software installing and maintenance • Licensing • Easy acces to hardware and software resources • Easy to change the lab contents • Simplified interfaces

  22. More advantages ... • Students can be exercices at home without physical presence at the educational center • Students can familiarize with the execution tool environment before the course starts • Manuals • examples

  23. Outline • Internet • GRID • Globus • ULabGrid • Summary

  24. Summary • Information of interest • GRID Forum • www.globus.org • The Grid: Blueprint for a New Computing Infrastructure, I. Foster and C. Kesselman Morgan Kaufmann

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