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NRENs and GRIDs: Bridging Networks and Grid Communities

Explore the impact of Grids on NRENs, discussing issues like QoS, SLAs, AAI, and collaboration opportunities between the two sectors.

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NRENs and GRIDs: Bridging Networks and Grid Communities

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  1. NRENs and GRIDs Claudio Allocchio TERENA GA Meeting, June 2005 http://www.terena.nl/tech/grid NRENs and GRIDs - June 2005

  2. Grid Related activities • TF-EMC2 – Middleware • GGF – regular active involvement • US MACE – regular active involvement • EuroGridPMA – regular active involvement • EGEE Project – Dissemination Leader • Some TERENA members active in Grids • NREN-Grids workshop – 12 May 2005 NRENs and GRIDs - June 2005

  3. The NREN-Grids Workshop • Floated the idea to the GA by mail 31 Jan 2005 • Positive Response • Created <nrens-n-grids> distribution list • Now has 76 subscribers • Developed a workshop programme • Announced 21 March 2005 • Event took place on Thursday 12 May 2005 • 35 delegates, 25 organisations, 21 countries NRENs and GRIDs - June 2005

  4. Workshop Objectives • Exchange information on current practice • Reach a common understanding about the likely impact of Grids on NRENs • Consider which initiatives and/or projects we need to engage with • To compile a list of potential action points if necessary NRENs and GRIDs - June 2005

  5. Workshop Programme • Beyond Fat Pipes: Simon Leinen, • AAI - Thomas Lenggenhager, • Support for Virtual Organisations - Diego Lopez, • Network Monitoring for Grid Users - Ludek Matyska, • Security Incident Handling - Ian Neilson, • Network Infrastructure - Peter Stefan • The EGEE Project - Matthieu Goutelle • Discussions 14:00 – 16:30 NRENs and GRIDs - June 2005

  6. Many practical issues raised: • Need a route to reach consensus between Grids and NRENs • Need to have a person in each NREN NOC as a single point of contact • Need a database holding SLA information for each domain Mechanism for troubleshooting • no commitment yet to implement QoS on some networks • What to do if SLA’s are not kept • Maybe the term SLA should be redefined to contain procedures etc, and not exact performance figures and percentages • How much is the Grid Community prepared to pay • Grid grabbing bandwidth first may leave little for others • What is the business model for the Grid Community ? • Should NRENs be involved in providing more than just the network, but also higher level services – eg AAI • Grid has a lot to gain from collaborating with NREN initiatives such as the SWITCH AAI • Current systems in Grid, do not scale and need to leverage off stuff undertaken in the NRENs • Grid community do not have a good understanding of Best Efforts • Grid Community do not ration the network, its just there and not under their own control • User oriented approach putting responsibility onto the user rather than the administrator • Also need to have similar facilities and services out to the campus networks. • LCG think they will be able to satisfactorily do large data flows over hybrid networks. • Designing Middleware which assumes failure is the normal mode is just beginning to be considered – may take years to be pervasive – couple more complete re-writes of the system • P2P is a good model, HEP data is write-once, modify-never and read-many. Maybe able to get data more locally rather than going back to the central resource. • There should be a convergence of AAI (SSA?) for example • The homogeneity of log-data exchange • Trouble Ticket management in a common format (extra level of filetring has been added). • Homogeneity of service offerings across Europe (NO NREN LEFT BEHIND) NRENs and GRIDs - June 2005

  7. List of Top Issues & Needs • Improved communications between NRENs and Grid Community • Global inter-working AAI • Schedulable deterministic end-to-end pipes • User & network administrator training • Quality of service • End-to-end security • NRENs as a neutral point for connecting resources (in the sense of being a trusted broker) • Understanding the real performance issues with a PERT in particular knowing how contentious flows complete with one another. NRENs and GRIDs - June 2005

  8. Suggested Ways Forward • TERENA should try and bring in a wider GRID community • NREN and Grid Community Workshops • Every 6 months • A place for information exchange • One in conjunction with a European GGF • Technical work in small Task Forces • TF-EMC2 and TF-VVC were mention, but others could be created if required • Promote in the wider Grid Community NRENs and GRIDs - June 2005

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