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Astrophysics on the Grid

Astrophysics on the Grid. MHD portal with Zeus3D Brett Beeson Collaborators David Barnes (AusVO) Andrew Melatos (MHD) Slavisa Garic (NimrodG) Astrogrid (MySpace). Background . Theory with the VO? Not just synthetic telescopes Publishing codes via the Web. Zeus Overview . The Good

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Astrophysics on the Grid

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  1. Astrophysics on the Grid • MHD portal with Zeus3D • Brett Beeson • Collaborators • David Barnes (AusVO) • Andrew Melatos (MHD) • Slavisa Garic (NimrodG) • Astrogrid (MySpace)

  2. Background • Theory with the VO? • Not just synthetic telescopes • Publishing codes via the Web

  3. Zeus Overview • The Good • F77 (language of the Gods) • Free for academic use • Widely used, flexible • The Bad • F77 (language of the Gods) • Complex to build (CPP,G77,libraries) • Difficult to use, easy to break

  4. Portal Overview • Why? • Make Zeus3D available to researchers • Advantages over existing methods • Use Grid to distribute computation • Visualise results quickly • Demonstrate theory on the VO • Explore integration of existing components. • Globus, MySpace, Tomcat, NimRod • Local demand at Melbourne University

  5. (Ethernet) Zeus Portal Cluster Web Server NimrodG Tomcat Globus MySpace NimrodG (GrangeNet) Zeus Globus Project Overview User’s Browser

  6. MHD Setup • Physical parameters • Initial conditions • Java for processing • Interactivity possible

  7. Zeus Portal Web Server Tomcat NimrodG Globus Cluster NimrodG Globus Zeus Job Submission • NimrodG and Globus • Dynamic loading • Robust • Secure

  8. Job Monitoring • Mid-process monitoring • Dead jobs restarted • Monitor across clusters • NimrodG provides for parameter sweep

  9. Zeus Portal Web Server Tomcat NimrodG Globus MySpace Results • Post Processing • Transparent • Storage • MySpace – portal or Astrogrid tools • Data • Statistics, HDF, VOTable • Visualise • Slices • Volume render

  10. Embedded Visualisation DVR Rendering

  11. Embedded Visualisation OGLE Rendering

  12. User’s Browser HTTP Applets Zeus Portal GRAM Nimrod sockets Cluster Web Server NimrodG Tomcat Globus MySpace NimrodG Zeus Globus MySpace API Underlying Technology

  13. Contacts • Brett Beeson • University of Melbourne • bbeeson@physics.unimelb.edu.au • Australian VO • www.aus-vo.org • www.ivoa.net

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