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End-user requirements for network monitoring Paul Mealor JRA4

End-user requirements for network monitoring Paul Mealor JRA4. EGEE Kick-Off Meeting, 20 th April 2004. www.eu-egee.org. EGEE is a project funded by the European Union under contract IST-2003-508833. Contents. Finding requirements A use case: User submits a job to “the EDG” But…

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End-user requirements for network monitoring Paul Mealor JRA4

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  1. End-user requirements for network monitoringPaul MealorJRA4 EGEE Kick-Off Meeting, 20th April 2004 www.eu-egee.org EGEE is a project funded by the European Union under contract IST-2003-508833

  2. Contents • Finding requirements • A use case: User submits a job to “the EDG” • But… • Other forms of Grid usage EGEE Kick-Off Meeting, JRA4 session, 20th April 2004 - 2

  3. Finding requirements • End users do not use network information directly • Complexity is hidden, mostly • An interested user might want and be able to use monitored info • Requirements expressed through middleware • Replica management API • Requirements expressed through Data Centre use • Can we quiz a data centre for end users’ requirements? (and operations requirements) • Requirements might be extracted from Data Challenge use • This is real use of grid software • Maybe we can learn from this EGEE Kick-Off Meeting, JRA4 session, 20th April 2004 - 3

  4. User submits a job to “the EDG” The job Replica management API getAccessCosts(job,CE,…) Job submission software The RB getNetworkCost(CE,…,SE,…) Network cost estimation system User’s machine RB Replica management API getBestReplica(fn) A replica Not here :-) getNetworkCost(CE,SE,…) Network cost estimation system SE CE EGEE Kick-Off Meeting, JRA4 session, 20th April 2004 - 4

  5. But… • A user can find out what actually happened to their job • So they have enough information to do after-the-event debugging • Requires that measurements have already been made • Also, a user might be able to force settings • Which CEs and replicas to use, say • Therefore, set up monitoring to run as the job does • But this is getting to Operations-type use, no? EGEE Kick-Off Meeting, JRA4 session, 20th April 2004 - 5

  6. Other forms of grid usage • HEP field is (I would say) dominated by the above usage model • At least, replica management seems to be the major use of the networks • However, other fields may not be: • Medical imaging? • Biology applications? • Video-conferencing • Earth Observation? – “end-to-end services with user involvement” • Other use cases • Proving QoS (without interfering with it) EGEE Kick-Off Meeting, JRA4 session, 20th April 2004 - 6

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