DOT: Distributed Optical Testbed

1
DOT Distributed Optical Testbed

• Valerie Taylor, Joe Mambretti, Alok Choudhary,
  Peter Dinda
• Northwestern University
• Charlie Catlett, Bill Nickless, Linda Winkler
• Argonne National Lab
• Ian Foster
• University of Chicago
• Tom DeFanti, Maxine Brown, Jason Leigh
• University of llinois at Chicago
• Xian-He Sun
• Illinois Institute of Technology
• Robert Pennington
• NCSA

2
DOT Sites
NU-E
NU-C
UIC
Star Tap
IIT
ANL
Uof C
NCSA/UIUC
I-WIRE
OMNI
3
Site Details

• Consists of linux clusters at 7 sites
• NU-E 7 data nodes and 7 compute nodes
• NU-C 7 data nodes and 7 compute nodes
• IIT 11 data nodes and 3 compute nodes
• UofC 14 data nodes
• UIC donated cluster
• ANL 14 data nodes
• NCSA donated 8-node cluster

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Issues

• Have one administrative domain for DOT
• Consider Virtual Organization for extending
  beyond DOT
• One scheduler
• Get a distributed system by default
• Consistent software
• Based upon the Globus toolkit

5
Proposed Research Activities

• Dynamic Load-balancing (Taylor)
• Performance Monitoring Prediction (Sun, Dinda,
  Taylor)
• Data management (Foster, Choudhary)
• Driven by large-scale applications
• ENZO --- cosmology application
• Cactus --- solve Einsteins equations
• AudioVoice --- virtualized distributed app. with
  real-time deadlines

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Status

• Getting quotes for clusters
• Provisioning issues
• Setting policies
• User accounts
• Software installation
• Collaborations with other projects
• Making contacts for an international testbed