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Scientific Applications & High Speed Networks
Dr. Gabrielle AllenDepartments of Computer Science and
Physics & AstronomyCenter for Computation & Technology
Louisiana State University
NSF 0947825 (EAVIV), 0904015 (Einstein Toolkit)
Why are Networks Important for Science?
• Science & engineering increasing data driven– “data tsumani”, NSF DataNet– Cannot store all data, stream processing
• Non-traditional applications e.g. music, art– Fundamentally large data
• Remote collaboration is crucial– New capabilities needed– Really interactive!
• Exascale: workflow assumes remote analysis• Many current scientific use cases– Petascale & multicore issues ahead
• Use cases crucial for my scientific research
Multi-physics Simulations
Multi-phase fluids for neutron star cores(nuclear densities,
radiation transport, neutrino transport)
Cosmological spacetimes
Modeling Gamma Ray Bursts
Gravitational waves traveling through
vacuum spacetimeNeed: Co-scheduling, data transfer between components
Group Data
Data Archiving
Community Archive
Published DataGroup Data
Ranger
Kraken
Queen Bee
Local analysis
Large scale resources
Terabytes of data to be moved (and described).
Distributed Analysis and Visualization
Andrei will describe: interactivity, large distributed data, co-scheduling, many challenges
Collaboration
Einstein Toolkit Team: multiple sites collaborating in US, Europe, Japan
Need technologies that allow real interaction, sharing whiteboard, easy and quick to set up
Challenges• Computational scientists more comfortable with
clusters/filesystems than networks– Limits science! Scaled down resources
• Networking currently involves many partners, long timescales. International connectivity very hard.– High level application-oriented services needed.– APIs between services and applications
• Crucial– End-to-end capabilities (Science done on workstations/laptops– Persistency and production quality– Additional tools, e.g. advanced reservations, on-demand provisioning.
• Need to have real working prototypes to be able to get to details … not just about moving files, new science scenarios