GridPP 11th Collaboration MeetingNetworking: Current Status

Robin Tasker14 September 2004

1. To bring the technology of very high rate/long distance data transport to practical use in experimental production environments (both current and LHC experiments); and to demonstration of one or more UK HEP experiments being able to regularly transport data at rates in excess of 500 Mbit/s and preferably 1 Gbit/s.

2. To exploit the UKLIGHT infrastructure to utilise switched dedicated circuits between major centres including UK Tier1 and 2, CERN and FNAL.

3. To participate in EGEE oriented network monitoring service developments and deployment within the UK, and development of diagnostic engines for Grid operations

4. To maintain the strategic relation which HEP holds with all relevant major Network authorities globally.

5. To provide PPNCG support and other work as specified

Network Objectives

High Performance Networking

The Details

• Life of a Packet: Setting the scene. • Just What is OC-48?: Explanation of networking terms• TCP Theory• TCP - Changes for High Speed Transmission• End-User Systems - NICs and Operating System Kernel• Discs and Other Server Issues• LANs & Firewalls• Security Aspects• Diagnostic Steps in diagnosing performance problems• An application Viewpoint: How do applications view the network?

http://grid.ucl.ac.uk/nfnn.html

High Performance Networking

Workshop Summary

• Hosted by UCL• Organised by UCL / Daresbury Laboratory• Financial support from PPARC

• 45 advance registrations• 2 attendees from the US including• Jenny Shopf from the Globus Team at Argonne.• Delegates from a diversity of science application areas, e-Science projects and support roles.• Presenters from various UK institutions, with European representation from CERN.• To be repeated at NeSC in March 2005Feedback

….a great deal of interest in the general themes addresses by the workshop:using an understanding of networking issues, common problems, diagnosticsand fixes to "bring high performance to (your) applications".

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Future Activity

High Speed Cookbook: development using the information here and available from MB-NG, DataTAG and elsewhere

High Performance Networking

UK Access Network

NetherLightAmsterdam

10G

b

StarLight

Chicargo

10Gb

UKLight

London

Lancaster + DL

Glasgow Edinburgh

LeedsManchester

LondonReading

Portsmouth

Bristol

Cambridge

2.5Gb

2.5GbManchester

London

UKLight

Leeds

RAL

UK Light

UK national R&D network infrastructure

International Connectivity

National Interconnection

UK Light

1 Gbit/s sustained using new UDP protocol (UDT)

Early Adoptors1. CDF : Connecting UCL - FNAL

2. Radio Astronomy – eVLBI

eVLBI will connect up to 6 Telescope to JIVE in real-time for 2 years as a proof of concept

UK Light

1. UK LIGHT Town Meeting

Organiser: Pete ClarkeWithin the Programme:Technology for High Performance NetworksSpeaker, Robin TaskerLive Demo of capability UCL-FNALPresenter: Nicola Pezzi

2. ESLEA: Exploitation of Switched Lightpaths for eScience Applications

Delivering the Potential of Optical Networking with UK Light

“The following applications can benefit immediately from UK Light:

HEP :Particle Physics Data transferVLBI: Radio Astronomy Very Long Baseline InterferometryHPC: Computational steering and VisualisationeHealth: Oncology Remote Visualisation”

Project Kick-Off Meeting : Thursday 16 September

SuperJANET5

Flexible transmission platform

IP production network

Special purposebandwidth

Test – bed(s)

Commodity e-Science Network R&D

Service Dev.

Test – bed(s)

Requirements to be served

Teaching & Learning

Overview of Architecture Requirements

Grid Network Monitoring

Current partners:

Current collaborators:

Current status:

Reported at AHM, Nottingham. Presentation attracted ~50 people, diverse interestSee: http://www.allhands.org.uk/ for details, also on GridPP Web site

http://gridmon.dl.ac.uk/gridmon/

Grid Network Monitoring

Activities

1. Tidying / consolidating existing infrastructure

2. Publication of performance data to Grid apps and middleware, via web/Grid services in conjunction with GGF NM-WG. Co-chaired by Mark Leese. http://www-didc.lbl.gov/NMWG/

Dealing with the What? Where? When? And How? Questions

Goal is prototype operation using the UK Infrastructure by Christmas, but in close collaboration with EGEE JRA4, DANTE and UKERNA

3. Working in the GGF GHPN-RG, specifically in the thread net-services modelling the network as a Grid resource allowing “advance reservation” etc.

4. Developing a network Diagnostic Tool Starting consultation with GOCs (e.g. e-Science) and EGEE. Likely to involve collaboration (or at least liaison) with Internet2, and DANTE via EGEE

Questions?