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So Now What?

So Now What?. Where to next? WLCG Service Reliability Workshop November 26-30 2007, CERN. Where are we?. We have the lists of prioritized requirements from all LHC experiments Some work is required to consolidate these: Only 1(?) clear mismatch of service level between VOs

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So Now What?

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  1. So Now What? Where to next? WLCG Service Reliability Workshop November 26-30 2007, CERN

  2. Where are we? • We have the lists of prioritized requirements from all LHC experiments • Some work is required to consolidate these: • Only 1(?) clear mismatch of service level between VOs • But different definition of service level requirements • Critical; Super-critical; Extra-super critical (2h – 30’ max interuption) • DOWN; SERIOUSLY DEGRADED; PERTURBED is probably OK • Need to be realistic about ‘background’ of problems that cannot be avoided • Can only achieve highest level of service with • resources • WORK • “BEST PRACTICES”

  3. Definitions of “Critical” • Quite significant differences in list of services under each heading: • ATLAS: only2 services are in top category (ATONR, DDM central services) • CMS: (long) contains also numerous IT services (incl. phones, kerberos, …) • LHC: CERN LFC, VO boxes, VOMS proxy service • ALICE: CERN VO box, CASTOR + xrootd@T0 (?)

  4. Meanwhile, back on planet Earth… • Measured service / site reliability is WAY BELOW what is requested • There may well be bugs in reporting / measuring, but this giant mis-match has to be addressed! • Target: specific areas, coordinators, actions & timeline • e.g. Service dash for experiment services; • LFC dash status (one of the good ones!) • VOLUNTEERS! • WLCG Collaboration workshop in April 2008 • “Measured improvement in service quality” • CHEP March 2009 • “Solved”

  5. The 2008 International workshop on Resiliency in High Performance Computing (Resilience 2008) http://xcr.cenit.latech.edu/resilience2008/ • In conjunction with the 8th IEEE Intentional Symposium on Cluster Computing and Grid (CCGRID 2008), May 18-22, 2008, Lyon, France. • Important Dates: • Paper Submission Deadline: December 1, 2007

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