David P. Anderson

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Public and Grid Computing

• David P. Anderson
• Space Sciences Laboratory
• University of California Berkeley

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History
95 96 97 98 99 00 01 02
03 04
GIMPS, distributed.net
SETI_at_home, folding_at_home
fight_at_home
names public-resource computing peer-to-peer
computing public distributed computing _at_home
computing
climateprediction.net
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The potential of public computing

• 1 billion Internet-connected PCs in 2010
• 50 privately owned
• If 10 participate
• At least 100 PetaFLOPs, 1 Exabyte (1018) storage

public computing
CPU power, storage capacity
Grid computing
p
cluster computing
supercomputing
cost
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Economics (simplified)

• Public
• you buy bandwidth, computers are free
• Grid
• you buy computers, bandwidth is free
• 1 buys 24 GB transfer or 1 CPU day
• Let X CPU hrs/GB
• if X gt 1, public computing may be cheaper
• SETI_at_home X 3,000

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Why hasn't PRC taken off?

• Lack of platform
• jxta, Jabber not a solution
• Java apps are in C, FORTRAN
• commercial platforms money issues
• cosm not complete
• Need to connect scientists to technology

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Public/Grid differences
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SETI_at_home

• Running since May 1999
• 500,000 active participants
• 60 TeraFLOPs (grows w/ Moore's Law)
• Problems with current software
• hard to change/add algorithms
• inflexible data architecture
• can't share participants w/ other projects

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BOINC Berkeley Open Infrastructure for Network
Computing

• Goals for computing projects
• easy/cheap to create and operate DC projects
• wide range of applications possible
• no central authority
• Goals for participants
• easy to participate in multiple projects
• invisible use of disk, CPU, network
• NSF-funded open source in beta test
• http//boinc.berkeley.edu

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BOINC features

• Computation model
• redundant computing, soft deadlines
• Data model
• flexible long-term storage on clients
• Programming environment
• Administrative tools
• Minimal API (support legacy apps)
• Credit system
• Participant web features

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Projects

• Current (at UCB Space Sciences Lab)
• SETI_at_home
• Astropulse
• In progress
• Folding_at_home (Stanford)
• Climateprediction.net (Oxford)
• Planned
• LIGO (physics)
• CERN

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Conclusion

• Public-resource computing is a distinct paradigm
  from Grid computing
• PRC has tremendous potential for some
  applications (computing and storage)
• BOINC enabling technology for PRC