1. Exa-Scale Volunteer Computing David P. Anderson Space Sciences Laboratory U.C. Berkeley

2. History of volunteer computing Applications Middleware 1995 2005 distributed.net, GIMPS SETI@home, Folding@home Commercial: Entropia, United Devices,... BOINC Climateprediction.net Predictor@home IBM World Community Grid Einstein@home Rosetta@home... 2005 2000now Academic: Bayanihan, Javelin,... Applications

3. SETI@home

4. Folding@home

5. Climateprediction.net

6. Einstein@home Gravitational waves

7. Other projects LHC@home Rosetta@home IBM World Community Grid Etc. – epidemiology, plant ecology, genetic linkage, phylogenetics, graph theory, number theory, cognitive modeling, fluid dynamics, galactic structure, quantum chemistry, nanotechnology, quantum computing, cosmology

8. Performance Current – 500K people, 1M computers – 6.5 PetaFLOPS (3 from GPUs, 1.4 from PS3s) Potential – 1 billion PCs today, 2 billion in 2015 – GPU: approaching 1 TFLOPS – 1 ExaFLOPS: 4M GPUs * 0.25 availability – 1 Exabyte: 10M PC disks * 100 GB – Freescale i.MX51: 2 GFLOPS, 200mw

9. Cost of 1 TFLOPS-year Cluster: $145K – Computing hardware; power/AC infrastructure; network hardware; storage; power; sysadmin Cloud: $1.75M Volunteer: $1K - $10K – Server hardware; sysadmin; web development

10. BOINC Open-source volunteer computing middleware – http://boinc.berkeley.edu projects CPDN LHC@home WCG attachments volunteers

11. What apps work well? Bags of tasks – parameter sweeps – simulations with perturbed initial conditions – compute-intensive data analysis Native, legacy, Java, GPU – soon: VM-based Job granularity: minutes to months

12. Data size issues Commodity Internet Institution ~ 1 Gbps non-dedicated underutilized ~ 1 Mbps (450 MB/hr) possibly sporadic non-dedicated underutilized Can handle moderately data-intensive apps

13. Organizational models Umbrella projects Institutional – Lattice, VTU@home Corporate – IBM World Community Grid Community – AlmereGrid Research community – MindModeling.org Project publicity web development sysadmin

14. Paradigm connections Volunteer computing Grid computing Cloud computing EDGeS (interoperability) BOINC server on Amazon EC2 CERN VM (cloud-sourcing?) Backfill on OSG BOINC for desktop grids