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Senior software developer and research assistant working with the Distributed Systems Laboratory on the Globus Toolkit, particulary on new security solutions and combining grids and virtual machine technology. |
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Email: tfreeman@mcs.anl.gov Weblog: http://www.gridvm.org |
Physical mail:
Building 221
9700 South Cass Avenue
Argonne, IL 60439
Staff: Computation Institute, University of Chicago
Joint appointment: Mathematics and Computer Science Division, Argonne National Laboratory
Master's Degree in Computer Science, University of Chicago
The goal of the Nimbus is to use virtual machine technologies such as Xen to provide policy-driven resource management and dynamically deployable environments that fit the exact needs of grid applications. Online are overviews, technical documentation, and relevant publications and presentations.
The service can be freely downloaded and you can see the current news items here. Subscribe via RSS
Deploying "one-click" virtual clusters on the fly is my favorite Nimbus feature, see this clusters page to learn more about it.
Also see the general Nimbus FAQ.
The GridShib Project provides a framework for joining federated authorization infrastructure (Shibboleth) with Grid technology (the Globus Toolkit). Besides gaining a well supported, distributed attribute based authorization infrastructure, integrating with Shibboleth allows grids to leverage its already wide use by universities for identity management. Online are overviews, technical documentation, and relevant publications and presentations. The tools are available for download here and you can see current news items here.
Contextualization: Providing One-Click Virtual Clusters, Keahey, K., T. Freeman. To be presented: eScience 2008, Indianapolis, IN. December 2008. (pdf)
On the Use of Cloud Computing for Scientific Workflows, Hoffa, C., G. Mehta, T. Freeman, E. Deelman, K. Keahey, B. Berriman, J. Good. To be presented: SWBES 2008, Indianapolis, IN. December 2008.
Flying Low: Simple Leases with Workspace Pilot, Freeman, T., K. Keahey. Euro-Par 2008 (pdf)
Enabling distributed petascale science, Baranovski, A. et al. Journal of Physics: Conference Series, 78. 2007 (pdf)
Virtual Workspaces for Scientific Applications, Keahey, K., T. Freeman, J. Lauret, D. Olson. SciDAC 2007 Conference (pdf)
Enabling Cost-Effective Resource Leases with Virtual Machines, Sotomayor, B., K. Keahey, I. Foster, T. Freeman. HPDC 2007 Hot Topics session (pdf)
A Scalable Approach To Deploying And Managing Appliances, Bradshaw, R., N. Desai, T. Freeman, K. Keahey. TeraGrid 2007 (pdf)
Division of Labor: Tools for Growth and Scalability of Grids, Freeman, T., K. Keahey, I. Foster, A. Rana, B. Sotomayor, F. Wuerthwein. ICSOC 2006 (pdf)
A Multipolicy Authorization Framework for Grid Security, Lang, B., Ian Foster, Frank Siebenlist, Rachana Ananthakrishnan, Tim Freeman. Accepted by the IEEE NCA06 Workshop on Adaptive Grid Computing (to appear in Proc. Fifth IEEE Symposium on Network Computing and Application), Cambridge, USA, July 24-26, 2006. (pdf)
Virtual Clusters for Grid Communities, Foster, I., T. Freeman, K. Keahey, D. Scheftner, B. Sotomayor, X. Zhang. CCGRID 2006, Singapore, May 2006. (pdf)
Identity Federation and Attribute-based Authorization through the Globus Toolkit, Shibboleth, Gridshib, and MyProxy, Tom Barton, Jim Basney, Tim Freeman, Tom Scavo, Frank Siebenlist, Von Welch, Rachana Ananthakrishnan, Bill Baker, Monte Goode, and Kate Keahey. 5th Annual PKI R&D Workshop, April 2006. (pdf)
An Edge Services Framework (ESF) for EGEE, LCG, and OSG, Rana, A., F. Wuerthwein, K. Keahey, T. Freeman, et. al. Computing in High Energy and Nuclear Physics 2006 (CHEP), February 2006, T.I.F.R. Mumbai, India (pdf)
Virtual Workspaces: Achieving Quality of Service and Quality of Life in the Grid, Keahey, K., I. Foster, T. Freeman, and X. Zhang. Scientific Programming Journal, vol 13, No. 4, 2005, Special Issue: Dynamic Grids and Worldwide Computing, pp. 265-276 (pdf)
Virtual Workspaces in the Grid, Keahey, K., I. Foster, T. Freeman, X. Zhang, D. Galron. Europar 2005, Lisbon, Portugal, September, 2005. (pdf)
Authorization and Account Management in the Open Science Grid, Lorch, M. Kafura, D. Fisk, I. Keahey, K. Carcassi, G. Freeman, T. Peremutov, T. Rana, A.S. 6th IEEE/ACM International Workshop on Grid Computing, 2005. (abstract)
Flying Low: Simple Leases with Workspace Pilot, Tim Freeman. Euro-Par 2008, Las Palmas de Gran Canaria, Spain (pdf)
Virtual Workspace Appliances, Tim Freeman and Kate Keahey. SC06 Booth Presentation, Tampa, FL (pdf)
Virtual Clusters for Grid Communities, Tim Freeman. CCGrid 06, Singapore (pdf)
Making your workspace secure: establishing trust with VMs in the Grid, Wei Lu, Kate Keahey, Tim Freeman, Frank Siebenlist. SC05 Poster, Seattle, WA (ppt)
Working Spaces: Virtual Machines in the Grid, Kate Keahey, Tim Freeman, Frank Siebenlist. GlobusWorld 2005, Boston, MA (ppt)
Quality of Life in the Grids: VMs meet Bioinformatics Applications, Daniel Galron, Tim Freeman, Kate Keahey, Stephanie Gato, Natalia Maltsev, Alex Rodriguez, Mike Wilde. SC04 Poster, Pittsburgh, PA (ppt)
Mass Spectra Analysis on the Illinois BioGrid,
Kevin Drew, David Angulo, Alex Schilling, Tim Freeman.
2004 Midwest Software Engineering Conference, Chicago.
(ppt)
»» Awarded Best of Conference Student Poster
timfreeman.org
» Permanent, uniform resource locator.
My main personal presence online is
Virtualization and Grid Computing - gridvm.org
» On distributed computing, VMs, Web Services, Globus, Xen, Nimbus, and other technology.
Authorization processing for Globus Toolkit Java Web services
» IBM developerWorks article. They've retired the grid computing section, trying to get this article hosted elsewhere legally.
Several thousand
grid computing links
» The legacy of a grid computing search engine I built but deactivated after a while.
