Colloq - Computing Challenges For Large Particle Physics Experiments

Kaushik De (NSF program director / Arlington Texas)

Did Panda on ATLAS

Accelerator: ~30B Detectors ~10% Accelerator cost

Need computing …

• Niave cost estimate: Drwarfs the estimate of Accelerators
  • 2M CPU cores : 500M / year
  • data 1 Exabyte 300M
  • GPU: 150
  • Total cost: 1B / year ~ 50B total

How can we afford the computing ?

Well, what are we doing now ?

• Already using ~500k cores (ATLAS only)
• 300 PB disk (1/3 of the way there)

Resource cost already today approaching 1B / year