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19 th North America-Europe Data Exchange Meeting 3-5 May 2006 Silver Spring, MD, United States

19 th North America-Europe Data Exchange Meeting 3-5 May 2006 Silver Spring, MD, United States. David Hennings, Met Office. Telecommunication Links Status Report. Datalinks Link Speeds Message switching systems Frost Netlink Washington Link Data Volumes Toulouse Link Data Volumes

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19 th North America-Europe Data Exchange Meeting 3-5 May 2006 Silver Spring, MD, United States

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  1. 19th North America-Europe Data Exchange Meeting 3-5 May 2006 Silver Spring, MD, United States David Hennings, Met Office

  2. Telecommunication Links Status Report • Datalinks • Link Speeds • Message switching systems • Frost • Netlink • Washington Link Data Volumes • Toulouse Link Data Volumes • RMDCN, ECMWF stats • Supercomputer News

  3. Main Communications Links from Exeter

  4. RMDCN Connections with Exeter From http://rmdcn.ecmwf.int/services/computing/rmdcn

  5. Message Switching Systems - Frost

  6. Frost WMO Message Switching System HP UNIX 9000 L3000 servers running HP-UX 11i Active and Hot Stand-by set-up Synchronisation via 1Gbs-1 Fibre 100Mbs-1 to LAN for data transfers. Upgrading to 1Gbs-1 Corobor MessirComm for WMO switching Nexor Mailer for X.400 & SMTP

  7. GTS Link with NOAA TOC Washington BT Frame Relay link – NOT RMDCN 64 Kbs-1 Committed Information Rate Three logical data channels (Alpha-Numeric, GRIB & T4) TCP Sockets protocol Number of Messages (Data Volume in Mb). (compared with previous year) On 12th March 2006 via Frost system. An increase in GRIB of approx. 29% was due to additional Eumetsat bulletins switched from Offenbach to Washington

  8. GTS Link with NOAA TOC Washington- trends Yearly (1 Day Average)

  9. GTS link to NOAA TOC • Issues: • Require regular exercising of ISDN backup • Use non-specialist operations staff working from documentation

  10. File transfer links with Nesdis • Issues: • Swing tail circuit to new offices (Aug 2005!) • Consider viable backup routes and procedures • (use of Internet now feasible at UK end)

  11. Message Switching Systems – oVMS Netlink

  12. Netlink FTP File Switch Dec Alpha DS15 servers running OpenVMS Active and Hot Stand-by set-up 100Mbs-1 to LAN for data transfers In-House application for file switching Non WMO switch for Model & Sat products Switches fewer messages than Frost, but 10 times data volume. Interim upgrade completed Oct 2004, est 2 years growth “Rationalisation of File Transfer” project to replace these systems. Rollout of Linux/RH on commodity h/w Dell/Intel Security issues – DMZ working.

  13. Present Data Volumes on Washington NOAA – OSA (NESDIS) Link

  14. Netlink data: NOAA-OSA (NESDIS) Washington

  15. GTS Link with Toulouse (RMDCN) Via RMDCN Three logical data channels (Alpha-Numeric, GRIB & T4) for output Two logical data channels (Alpha-Numeric + GRIB, & T4) for input Link capacity 384 out. Number of Messages (Data Volume in Mb).

  16. File Transfer Links with Toulouse (RMDCN)(Netlink) Node TRMTF Number of files daily and data Volume in Mb. () = previous year Note: Received - increase due SAF/OCEAN ICE Transmitted - NOAA – 8 SSM/I gone (via ECMWF)

  17. Traffic over RMDCN to Toulouse

  18. Data link ECMWF 2Mb/s Megastream link (saturation at times)

  19. Supercomputing -NEC [2004-] No change since April 2005 upgrade, the 128-processor NEC SX-8 system doubled the computing power of each of the two existing 120-processor NEC SX-6 systems, which remain operational since April 2004. Theoretical peak power of an industry-leading 16 billion calculations per second per processor See http://www.metoffice.gov.uk/corporate/pressoffice/2005/pr20050412.html

  20. Future Plans To continue to move away from legacy protocols (X.25) IP links only Make use of Internet VPN’s where possible Upgrade Internet connection Upgrade Link to ECMWF Replace Netlink service – new architecture – DMZ’s for all! new hardware, O/s and applications (RH and AFD) rationalise FT applications across production and switching areas

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