Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Panel discussion about networking architecture issues [email protected] www.renater.fr GRID@LARGE Workshop, Lisbon, 29-30 August 2005 1 DEDICATED vs SHARED • Network configuration <--> GRID interaction • DEISA will be provided with an star OPN (VPN today) • Future of HPC infrastructure should be a mix of core network and access infrastructure. With multiple connections to all HPC sites and not all of them on the core part! GRID@LARGE Workshop, Lisbon, 29-30 August 2005 2 DEDICATED vs SHARED • Network configuration <--> GRID interaction • LHC (T0-T1 and T1-T1) will be provided with an OPN • LHC (T1-T2) will used a shared resource, with dynamic services configuration (BoD) ==> EGEE • Dedicated network (unique OPN) is the cheapest solution if there was a single pan-European project (LCG). Reality is not that, and not a technical optimum either (answer to Kors Bos!). • eVLBI is using a VPN, and will migrate eventually towards an OPN in the future GRID@LARGE Workshop, Lisbon, 29-30 August 2005 3 Scalability • Star topology is the initial sketch for all projects, which contradicts completely the grid spirit. • Ideal full mesh topology is not scalable • Star topology is not scalable either! (If it was, it should not be resilient) • Internet model is the most scalable (made of core + access infrastructure) • OPN must comply with this • Central overall management is required. Shared AUP (CA at large) is required. GRID@LARGE Workshop, Lisbon, 29-30 August 2005 4 OVERLAP • Grid community is discovering what telecommunications know and have been performing for long time already : • • • • 24/7, upgrade cost and complexity, interdomain and interoperability issues, monitoring, central management or standardization forces with operational interoperability of management, • Security. GRID@LARGE Workshop, Lisbon, 29-30 August 2005 5 ? Questions GRID@LARGE Workshop, Lisbon, 29-30 August 2005 6