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					               Early Days
• Born in 1940 at the start of World
  War II
• Luckily my Parents (mother matron,
  father hospital admin) not called up,
• However several moves as a
  consequence of bombing
• Wound up in Banbury 60 miles from
  London of nursery rhyme fame
  “Ride a cock horse to Banbury
  Cross” (attributed to Elizabeth I)
                Growing Up
• From there to Cornwall
  home of legend (King
  Arthur), worked out tin
  mines, and the so called
  Cornish Riviera since
  warmer (and wetter) than
  rest of England and on the
  coast
              School
• Shebbear: 2nd Oldest Methodist
  Public School in Britain
• Boarding school
• Located on the outskirts of Dartmoor
  of “Hound of the Baskervilles” fame
• Strong Boy Scouts movement led by
  ex-military school teachers.
  – Capture the flag, building structures
    from ropes and logs, long hikes
    (escape from school)
               Scouts
• Joined as Cub scout,
  continued onto Senior
  Scouts and awarded the
  Queens Scout Award in
  1956
• Honor conferred at
  Gilwell (home of
  Scouting) by Chief Scout
  of the British
  Commmonwealth and
  Empire Lord Rowallen
         University
• In Manchester: heart of the
  Industrial revolution, still
  recovering from loss of Empire
  markets
• University physics famous for
  Rutherford, Thomson, Geiger
• Home of Manchester United
  Soccer Club
• Honors BSc physics, then a PhD in
  Nuclear Physics
                   SLAC
• Applied and accepted by Rolls
  Royce, CERN and SLAC among
  others
• SLAC just finished getting first
  beams, Offered permanent post by
  future Nobel Prize winner Richard
  Taylor
• Wooed by promise of surfing and
  Beach Boys music
• Planned to come for 2 years
           Nobel prize


• SLAC new lab, exploring frontiers of science
• Late 60’s and early 70s’ worked night and
  day on experiments that resulted in the
  discovery of the quark
• Leaders awarded Nobel prize 1990
• Traveled to Stockholm took part in week’s
  celebrations
Year’s leave of Absence at IBM UK
           Laboratories
• Awarded Patent (US 4688181) for
  Interactive Cursor Motion & Image
  Transformation
• Returned to SLAC to take up leadership of
  the computer networking group
         China & the Internet
• With Panofsky’s encouragement went to
  Beijing & IHEP
  – A few months after Tiananenmen Square
  – Installed and made work a 9.6k modem that
    provided dial up mail and logon capability
• For next 3 years worked on getting satellite
  connection and eventually the first
  permanent Internet connection for
  mainland China
  – Last mile hard

• China 200M
  Internet users in
  2006
        High Speed Networking
• Two times World LAN speed record
  holder in collaboration with Caltech
  and others
  – In 2004 Guinness Book of Records
• Three consecutive years won the
  SuperComputing Band Width
  Challenge
  – 2005 reached 150Gbits/s for an hour
               Recent Work
• High speed networking
• Measure the Digital Divide by means of the
  Internet performance
  – Its extent, how it is changing, its impact
                How we measure
                 Uses ubiquitous ping




Monitorin                      Internet Remote
g                                       Host
host                                    (typically
                                        a server)



Data Repository @ SLAC

            Measure Round Trip Time & Loss
     PingER Deployment
• PingER project originally (1995) for measuring
  network performance for US, Europe and
  Japanese HEP community - now mainly R&E
  sites
• Extended this century to measure Digital
  Divide:
• >150 countries (99% world’s connected
  population)
  – 40 in Africa
  – Monitor (40 in 14
    countries)
  – Beacons ~ 90
  – Remote sites
    (~700)
                    World throughput
  Behind Europe      Derived throughput ~ 8 * 1460 /(RTT *
6 Yrs: Russia,
  Latin America                   sqrt(loss))
7 Yrs: Mid-East,                 Mathis et. al
  SE Asia
10 Yrs: South
Asia
11 Yrs: Cent.
Asia
12 Yrs: Africa


   South Asia,
Central Asia, and
  Africa are in
Danger of Falling
  Even Farther
    Behind
Many
systemic factors:                     Africa
Electricity, import duties,
skills, disease,            ~ 3x lower penetration than any other region
protectionist policies,     huge potential market Huge growth
corruption.
915M people 14%
world population, 3.6%
of world internet users,
mainly in cities




                                            http://www.internetworldstats.com
          Costs compared to West
  • Sites in many countries have bandwidth< US residence
     – “10 Meg is Here”,
       www.lightreading.com/document.asp?doc_id=104415
                                    • Africa:
                                      $5460/Mbps/m
                                       – W Africa
                                         $8K/Mbps/m
                                       – N Africa
                                         $520/Mbps/m
                                    (IDRC study Jan 2005)
                    Bandwidth Initiative:
   Coalition of 11 African Universities (MZ, TZ, UG, GH,
     NG, KY) + four major US Foundations to provide
    satellite thru Intelsat at 1/3 cost ($7.3K/Mbps/m =>
                            $2.23K)
1 yr of Internet access > average annual income of most
Africans, Survey by Paul Budde Communications
•   CERN and Charpak skiing
•   Mount Shasta climbing
•   2 daughters, 3 grandchildren
•   Still on first marriage
•   6 weeks in Borneo, 120 miles up river in
    boat, tropical disease of unknown origin

				
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posted:6/14/2011
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