Developing "bleeding edge" solutions for problems involving cloud computing, security, and Linux. Mostly for users with large-scale scientific computing needs.
Primary developer of Nimbus which is an open source infrastructure-on-demand implementation (it predates Amazon EC2 but that wire protocol is now supported).
Senior Software Developer for the Computation Institute, University of Chicago (with joint appointment to the Mathematics and Computer Science Division of Argonne National Laboratory).
Weblog: http://www.gridvm.org
http://www.linkedin.com/in/timfreeman
Permanent email: tim@timfreeman.org, work email: tfreeman@mcs.anl.gov
Contextualization: Providing One-Click Virtual Clusters,
Keahey, K., T. Freeman. eScience 2008,
Indianapolis, IN. December 2008.
On the Use of Cloud Computing for Scientific Workflows,
Hoffa, C., G. Mehta, T. Freeman, E. Deelman, K. Keahey, B. Berriman, J. Good. SWBES 2008, Indianapolis, IN. December 2008.
Science Clouds: Early Experiences in Cloud Computing for Scientific Applications,
Keahey K., T. Freeman. Cloud Computing and Its Applications 2008 (CCA-08), Chicago, IL. October 2008.
Flying Low: Simple Leases with Workspace Pilot,
Freeman, T., K. Keahey. Euro-Par 08,
Las Palmas de Gran Canaria, Spain. August 2008
Enabling distributed petascale science,
Baranovski, A. et al. Journal of Physics: Conference Series, 78. 2007
Virtual Workspaces for Scientific Applications,
Keahey, K., T. Freeman, J. Lauret, D. Olson.
SciDAC 2007 Conference, Boston, MA. June 2007
Enabling Cost-Effective Resource Leases with Virtual Machines,
Sotomayor, B., K. Keahey, I. Foster, T. Freeman.
HPDC 2007 Hot Topics session
A Scalable Approach To Deploying And Managing Appliances,
Bradshaw, R., N. Desai, T. Freeman, K. Keahey.
TeraGrid 2007, Madison, WI. June 2007
Division of Labor: Tools for Growth and Scalability of Grids,
Freeman, T., K. Keahey, I. Foster, A. Rana, B. Sotomayor, F. Wuerthwein.
ICSOC 06, Chicago, IL. December 2006
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.
Virtual Clusters for Grid Communities, Foster, I., T. Freeman,
K. Keahey, D. Scheftner, B. Sotomayor, X. Zhang. CCGRID 2006,
Singapore, May 2006.
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.
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
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
Virtual Workspaces in the Grid,
Keahey, K., I. Foster, T. Freeman, X. Zhang, D. Galron.
Europar 2005, Lisbon, Portugal, September, 2005.
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)
MS in Computer Science. University of Chicago, Chicago, IL. [ Awarded honors ]
BS in Philosophy. St. John's College, Annapolis, MD. [ Awarded best thesis ]
Proud husband and father of two toddlers, we all live in Madison, WI. [ Awarded the elite '#1 Dad' coffee mug ]
Besides academic/computer things, I like almost all genres of movies and books. Recently I have been reading a lot about food and health, authors such as Michael Pollan and Marion Nestle. My favorite 'sport' at the moment is the sledgehammer and truck tire work at the Monkey Bar Gym.
