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Introduction to Petascale Computing

Introduction to Petascale Computing. Dwayne John (djohn@utk.edu), NICS February 1, 2010. Outline. Introduction – What is HPC? Why do we do it? My background: Physics to Computation Gateways, Hubs, and Science Stories of HPC. Outline. Who is Dwayne? What is Supercomputing?

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Introduction to Petascale Computing

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  1. Introduction to Petascale Computing Dwayne John (djohn@utk.edu), NICS February 1, 2010

  2. Outline • Introduction – What is HPC? Why do we do it? • My background: Physics to Computation • Gateways, Hubs, and Science Stories of HPC Tapia Conference - April 4, 2009

  3. Outline • Who is Dwayne? • What is Supercomputing? • What is Kraken? • Questions…

  4. Who is Dwayne? • Degree: • A.S. in Engineering Science, Nassau Community College • B.S. in Physics, Adelphi University, 2006 • M.S. in Physics, The University of Tennessee, 2009 • Experience: • Research in Laser Trapping & Cooling • M.S. thesis in Relativistic Heavy-Ion Collisions • My career has just started. • President of Superhighway Club • Past NSBE member

  5. What is Supercomputing? • Technique for solving problems in parallel that would take infinite time to solve sequentially • Requires massive numbers of processors working in sync over a high bandwidth, low latency interconnect • Job communication via a message passing language • Job Opportunities: • System designers figure out how to build massive, machines • Domain-specific computational scientists figure out how to scale the code to discover new science

  6. What is Kraken?First Academic PetaflopOne of Top 3 Fastest Declassified Machines in the World!

  7. Questions : • Is having an engineering job like what you were expecting when you were in college? • Fantasy vs Reality (what jobs are available) • Be flexible; lots of interesting jobs • Are there things you were surprised by? • People/institutional processes/politics/costs often guide technical decisions • Pride of delivering product, helping scientists

  8. Questions, cont’d • Is it common to have several jobs in your career, or do you know more people who have only had one job and intend to be doing it for the rest of their career? • Yes, its common to have multiple jobs but often people stay in the same field/type of job. Economists say our generation will change jobs at least 11 times (Reported in 2005). • What kind of jobs/responsibilities do people have who were just hired after graduating college?? • Depends but usually the things no one else wants to do! Low on the totem pole.

  9. Questions: cont’d • Is a graduate degree really important? • Depends on what you want to do and where you want to work…YES! • What have you been able to solve with the computer? What projects do you usually use the computer for? What is the best/coolest thing about having a supercomputer? • Helping scientists discover new things about the universe • Climate change, earthquakes, black hole collisions, drug discovery • Animations (Pixar), financial markets

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