Marty Humphrey's home page

Marty Humphrey

Assistant Professor
Department of Computer Science
School of Engineering and Applied Science
Olsson Hall 236C, 151 Engineer's Way, P.O. Box 400740
University of Virginia
Charlottesville VA 22904 USA
phone: (434) 982-2258, email: humphrey AT cs.virginia.edu

Office hours for Spring 2008: Mon 1-2pm, Wed 11-2pm or by appointment

E-Science Collaborations (new!)

Scientists are increasingly required to navigate and integrate large data sets. A single scientist operating alone often cannot find the relevant data he/she needs, sometimes due to the sheer volume of data. The goal of an e-science collaboration is to help one another in their singular or collective discoveries. However, when one person cannot sufficiently explain his/her steps and/or advice, such that others in the collaboration can easily find and understand it, the collaboration can degrade into a collection of researchers acting alone. The challenge of an e-science collaboration is to enhance the productivity of everybody participating.

In late September, 2007, my research group collaborating primarily with Catharine Van Ingen of Microsoft Research and Deb Agarwal of Berkeley National Lab went live with a collaboration space for FluxNet (aka FluxData). We invite you to explore the public area of this collaboration space. We will be authoring technical articles about the design and implementation of this in the near future.

Microsoft Institute for High-Performance Computing at the University of Virginia

On Tuesday, November 15, 2005, in his keynote address at Supercomputing 2005 in Seattle, WA, Microsoft Chairman and Chief Software Architect Bill Gates announced that my group at the University of Virginia is one of 10 new Microsoft Institutes for High-Performance Computing! The broad mission of our Institute is to develop protocols and software for distributed/Grid computing that leverages and extends the .NET platform. Our particular focus is the Microsoft Compute Cluster and its use in the University of Virginia Campus Grid (UVaCG), which is a project partially funded by the National Science Foundation's Middleware Initiative. Building on a Web services foundation, the UVaCG features Windows and Linux platforms for compute and data access and is interoperable with the NSF TeraGrid on a limited basis (e.g., GRAM and GridFTP). We are co-leading in working group (with Steven Newhouse of Microsoft and Chris Smith of Platform) in the Open Grid Forum to define an HPC Profile for the community. A key requirement and challenge in this Institute is to focus on simplicity, defining only what is needed in order to define, implement, and manage an interoperable Grid platform for eScience.

Grid Computing on .NET

We have just released our open-source GridFTP implementation on .NET Framework 2.0 (includes: command-line client, server, and client GUI) and our open-source GRAM implementation based on .NET Framework 2.0 (command-line client, server).

My Brief Biography

I am currently an Assistant Professor in the Department of Computer Science at the University of Virginia. I received a B.S. and M.S. degree in Electrical Engineering from Clarkson University in 1986 and 1989, respectively. I received my Ph.D. degree in computer science from the University of Massachusetts in 1996. From 1996-1998, I was an Assistant Professor of Computer Science and Engineering at the University of Colorado at Denver. From 1998-2002, I was a Research Assistant Professor at UVa working on Legion project, primarily working on aspects of usability, performance and security.

My recent CV is here (last update: June 16, 2007).

Current Research Projects

Enhancing Authentication and Authorization in Grid Environments (using SecPAL)
Support for eScience Collaborations (using Sharepoint)
Development and Standardization of the HPC Profile
Policy Management in Grids (Early Career Principal Investigator Program of the Office of Science of US Department of Energy)

Please visit the UVa eScience Group for more information.

Teaching

CS 656: Operating Systems (Spring 2008)
CS 414: Operating Systems (Fall 2007)
CS 451: Distributed Systems (Spring 2007)
CS 414: Operating Systems (Fall 2006)
CS 101E: Introduction to Computer Science (Spring 2006)
CS 551: Distributed Systems (Spring 2005)
CS 414: Operating Systems (Fall 2004)
CS 551: Distributed Systems and Web Services (Spring 2004)
CS 650: Designing Complex Software Systems (Fall 2003)

Recent Publications

Grid Computing, e-Science and Security

A. Ruiz Alvarez, C. Smith, and M. Humphrey. BES++: HPC Profile Open Source C Implementation. In submission.
M. Humphrey, D. Agarwal, and C. van Ingen. Publication and Curation of Large-Scale Shared Scientific Data. In submission.
S.-M. Park and M. Humphrey. Feedback-Controlled Resource Sharing for Predictable eScience. In submission.
C. Smith, T. Kielmann, S. Newhouse, and M. Humphrey. The HPC Basic Profile and SAGA: Standardizing Compute Grid Access in the Open Grid Forum. In submission.
S.-M. Park and M. Humphrey. Data Throttling for Data-Intensive Workflows. 22^nd IEEE International Parallel and Distributed Processing Symposium (IPDPS 2008). April 14-18, 2008. Miami, FL.
M. Humphrey, S.-M. Park, J. Feng, N. Beekwilder, G. Wasson, J. Hogg, B. LaMacchia, and B. Dillaway. Fine-Grained Access Control for GridFTP using SecPAL. 8^th IEEE/ACM International Conference on Grid Computing (Grid 2007), Austin, TX, Sept 19-21, 2007. (Slides)
Z. Hill, J. Rowanhill, A. Nguyen-Tuong, J. Basney, G. Wasson, J. Knight and M. Humphrey. Meeting Virtual Organization Performance Goals through Adaptive Grid Reconfiguration. 8^th IEEE/ACM International Conference on Grid Computing (Grid 2007), Austin, TX, Sept 19-21, 2007.
J. Feng, G. Wasson, and M. Humphrey. Resource Usage Policy Expression and Enforcement in Grid Computing. 8^th IEEE/ACM International Conference on Grid Computing (Grid 2007), Austin, TX, Sept 19-21, 2007.
J. Rowanhill, G. Wasson, Z. Hill, J. Basney, Y. Kiryakov, J. Knight, A. Nguyen-Tuong, A. Grimshaw and M. Humphrey. Dynamic System-wide Reconfiguration of Grid Deployments in Response to Intrusion Detections. High Performance Computing Conference (HPCC 2007), Sept 26-28, 2007. Houston, TX.
G. Wasson, N. Beekwilder, D. Del Vecchio, M. Morgan and M. Humphrey. Resource-Oriented Computing: Design, Implementation, and Evaluation of WSRF.NET. Journal of Grid Computing. To appear, 2007.
S.-M. Park, G. Wasson, and M. Humphrey. Authorizing Remote Job Execution based on Job Properties. 2^nd IEEE International Conference on e-Science and Grid Computing. Dec 4-6, 2006, Amsterdam, Netherlands.
S. Eswaran, D. Del Vecchio, G. Wasson, and M. Humphrey. Adapting and Evaluating Commercial Workflow Engines for e-Science. 2^nd IEEE International Conference on e-Science and Grid Computing. Dec 4-6, 2006, Amsterdam, Netherlands.
D. Del Vecchio, V. Hazlewood, and M. Humphrey. Evaluating Grid Portal Security. Proceedings of Supercomputing 2006, Tampa, FL, Nov 11-17, 2006.
G. Wasson and M. Humphrey. Extending the TeraGrid to Campus Grids via .NET. TeraGrid 06 Workshop. Indianapolis IN, June 13-16, 2006.
W. Zhang, D. Del Vecchio, G. Wasson, and M. Humphrey. Flexible and Secure Logging of Grid Data Access. 7th IEEE/ACM International Conference on Grid Computing (Grid 2006), Sept 28-29, 2006, Barcelona Spain.
M. Theimer, S. Parastatidis, T. Hey, M. Humphrey, and G. Fox. An Evolutionary Approach to Realizing the Grid Vision. White paper. Feb 13, 2006. This paper motivates the GGF OGSA HPC Profile.
J. Feng, L. Cui, G. Wasson, and M. Humphrey. Policy-Directed Data Movement in Grids. 12th International Conference on Parallel and Distributed Systems (ICPADS 2006), Minneapolis, MN, July 12-15, 2006.
W. Zhang, D. Del Vecchio, G. Wasson, and M. Humphrey. Integrating Legacy Authorization Systems into the Grid: A Case Study Leveraging AzMan and ADAM. 2006 International Conference on Computational Science (ICCS 2006). Reading, UK. May 28-31, 2006.
E. Benson, G. Wasson, and M. Humphrey. Evaluation of UDDI as a Provider of Resource Discovery Services for OGSA-based Grids. 2006 International Parallel and Distributed Processing Symposium (IPDPS 2006), Rhodes Island, Greece, April 25-29, 2006.
J. Feng, L. Cui, G. Wasson, and M. Humphrey. Toward Seamless Grid Data Access: Design and Implementation of GridFTP on .NET. Proceedings of the 2005 Grid Workshop (Associated with Supercomputing 2005). Nov 13-14, 2005. Seattle, WA.
M. Humphrey, G. Wasson, Y. Kiryakov, S-M. Park, D. Del Vecchio, N. Beekwilder, and J. Gray. Alternative Software Stacks for OGSA-based Grids. Proceedings of Supercomputing 2005, Seattle, WA, Nov 12-18, 2005.
A. Grimshaw, M. Humphrey, J.C. Knight, A. Nguyen-Tuong, J. Rowanhill, G. Wasson, and J. Basney. The Development of Dependable and Survivable Grids. 2005 Workshop on Dynamic Data Driven Applications (associated with the 2005 International Conference on Computational Science). Emory University, Atlanta, GA. May 22-25, 2005.
M. Humphrey, G. Wasson, K. Jackson, J. Boverhof, M. Rodriguez, J. Gawor, S. Lang, I. Foster, S. Meder, S. Pickles, and M. McKeown. State and Events for Web Services: A Comparison of Five WS-Resource Framework and WS-Notification Implementations. 14th IEEE International Symposium on High Performance Distributed Computing (HPDC-14), Research Triangle Park, NC, 24-27 July 2005.
D. Del Vecchio, J. Basney, N. Nagaratnam, and M. Humphrey. CredEx: User-Centric Credential Selection and Management for Grid and Web Services. Proceedings of the 2005 IEEE International Conference on Web Services (ICWS 2005). July 12-15, 2005. Orlando, FL.
J. Wang, D. Del Vecchio, and M. Humphrey. Extending the Security Assertion Markup Language to Support Delegation for Web Services and Grid Services. Proceedings of the 2005 IEEE International Conference on Web Services (ICWS 2005). July 12-15, 2005. Orlando, FL.
M. Humphrey and G. Wasson. Architectural Foundations of WSRF.NET. International Journal of Web Services Research. 2(2), pp. 83-97, April-June 2005.
J. Basney, M. Humphrey, and V. Welch. The MyProxy online credential repository. Software--Practice and Experience. 2005. To appear.
M. Humphrey, J. Basney, and J. Jokl. The case for using Bridge Certificate Authorities for Grid Computing. Software--Practice and Experience. 2005. 35:1-10.
J.V.S. Watson, Sang-Min Park, and M. Humphrey. Toward GT3 and OGSI.NET Interoperability: GRAM Support on OGSI.NET. 2005 International Conference on Computational Science (ICCS 2005), May 22-25, 2005. Emory University, Atlanta, GA, USA.
J. Martin, J. Basney, and M. Humphrey. Extending Existing Campus Trust Relationships to the Grid through the Integration of Pubcookie and MyProxy. 2005 International Conference on Computational Science (ICCS 2005), May 22-25, 2005. Emory University, Atlanta, GA, USA.
G. Wasson and M. Humphrey. Exploiting WSRF and WSRF.NET for Remote Job Execution in Grid Environments. 2005 International Parallel and Distributed Processing Symposium (IPDPS 2005), Denver CO, April 4-8, 2005.
M. Humphrey, M. Thompson, and K.R. Jackson. Security for Grids. Proceedings of the IEEE (Special Issue on Grid Computing), vol 93, No. 3, March 2005. pp. 644 -- 652.
M. Humphrey and G. Wasson. The University of Virginia Campus Grid: Integrating Grid Technologies with the Campus Information Infrastructure. 2005 European Grid Conference (ECG 2005), Amsterdam, The Netherlands, Feb 14-16, 2005.
M. Humphrey, G. Wasson, M. Morgan, and N. Beekwilder. An Early Evaluation of WSRF and WS-Notification via WSRF.NET. 2004 Grid Computing Workshop (associated with Supercomputing 2004). Nov 8 2004, Pittsburgh, PA.
D. Chu and M. Humphrey. Mobile OGSI.NET: Grid Computing on Mobile Devices. 2004 Grid Computing Workshop (associated with Supercomputing 2004). Nov 8 2004, Pittsburgh, PA.
J. Jokl, J. Basney, and M. Humphrey. Experiences using Bridge CAs for Grids. Proceedings of the UK Workshop on Grid Security Experiences. Oxford 8^th and 9^th July 2004.
J. Basney, S.S. Chetan, F. Qin, S. Song, X. Tu, and M. Humphrey. An OGSI CredentialManager Service. Proceedings of the UK Workshop on Grid Security Experiences. Oxford 8^th and 9^th July 2004.
J. Feng and M. Humphrey. Eliminating Replica Selection – Using Multiple Replicas to Accelerate Data Transfer on Grids. Proceedings of the Tenth International Conference on Parallel and Distributed Systems (ICPADS 2004). Newport Beach, CA, July 7-9, 2004.
G. Wasson, N. Beekwilder, M. Morgan, and M. Humphrey. OGSI.NET: OGSI-compliance on the .NET Framework. In 4th IEEE/ACM International Symposium on Cluster Computing and the Grid (ccGrid 2004). Chicago, Illinois. April 19-22, 2004.
A. Grimshaw, M. Humphrey, A., Natrajan, A Philosophical and Technical Comparison of Legion and Globus , IBM J. of Res. and Devel., Vol. 48, No. 2, pp.233-254, March 2004.
M. Humphrey. Web Services as the Foundation for Learning Complex Software System Development. In 2004 Technical Symposium on Computer Science Education (SIGCSE 2004). Norfolk, VA, USA, March 3-7, 2004. pp. 457 -- 461.
G. Wasson and M. Humphrey. Policy and Enforcement in Virtual Organizations. In 4th International Workshop on Grid Computing (Grid2003). (associated with Supercomputing 2003). Phoenix, AZ. Nov 17, 2003.
G. Wasson and M. Humphrey. Towards Explicit Policy Management in Virtual Organizations. In IEEE 4th International Workshop on Policies for Distributed Systems and Networks. Lake Como, Italy. June 4-6, 2003.
M. Humphrey. From Legion to Legion-G to OGSI.NET: Object-based Computing for Grids. In Proceedings of the IPDPS NSF Next Generation Software Workshop Nice, France, April 2003.
M. Humphrey, S. Arnold, and G. Wasson. Location-Transparent Naming in Grid Computing using Legion-G. In Eleventh IEEE International Symposium on High Performance Distributed Computing (HPDC-11) (Poster Session), Edinburgh, Scotland, July 24-26, 2002.
B. Clarke and M. Humphrey. Beyond the "Device as Portal": Meeting the Requirements of Wireless and Mobile Devices in the Legion Grid Computing System. In 2nd International Workshop on Parallel and Distributed Computing Issues in Wireless Networks and Mobile Computing (associated with IPDPS 2002), Ft. Lauderdale, April 19, 2002.
D. Katramatos, M. Humphrey, S. Chapin, and A. Grimshaw. JobQueue: A Computational Grid-wide Queuing System. In Proceedings of the 2nd International Workshop on Grid Computing (in conjunction with Supercomputing 2001) , Denver, Colorado, November 12, 2001.
B. White, M. Walker, M. Humphrey, and A. Grimshaw. LegionFS: A Secure and Scalable File System Supporting Cross-Domain High-Performance Applications. In Proceedings of Supercomputing 2001 , Denver, Colorado, November, 2001.
M. Humphrey and M. Thompson. Security Implications of Typical Grid Computing Usage Scenarios. In Proceedings of the 10th International Symposium on High Performance Distributed Computing (HPDC) , San Francisco, California, August 7-9, 2001.
A. Natrajan, A. Fox, M. Humphrey, A. Grimshaw, M. Crowley, N. Wilkins-Diere. Protein Folding on the Grid: Experiences using CHARMM under Legion on NPACI Resources. In Proceedings of the 10th International Symposium on High Performance Distributed Computing (HPDC) , San Francisco, California, August 7-9, 2001. pp. 14-21.
A. Natrajan, M. Humphrey, and A. Grimshaw. Grids: Harnessing Geographically-Separated Resources in a Multi-Organisational Context. In Proceedings of the 15th Annual Symposium on High Performance Computing Systems and Applications(HPCS 2001) , Ontario, Canada, June 18-20, 2001.
M. Humphrey, N. Beekwilder, K. Holcomb, and A. Grimshaw. Legion MPI: High Performance in Secure, Cross-MSRC, Cross-Architecture MPI Applications. In Proceedings of the 2001 DoD HPC Users Group Conference , Biloxi, Mississippi, June 2001.
G. Stoker, B. White. E. Stackpole, T.J. Highley, and M. Humphrey. Toward Realizable Restricted Delegation in Computational Grids. In Proceedings of the International Conference on High Performance Computing and Networking Europe (HPCN Europe 2001) , Amsterdam, Netherlands, June 2001.
A. Natrajan, M. Humphrey, and A. Grimshaw. Capacity and Capability Computing using Legion. In Proceedings of the 2001 International Conference on Computational Science , San Francisco, CA, May 2001.
D. Katramatos, M. Humphrey, C. Hwang, and S. Chapin. Developing a Cost/Benefit Estimating Service for Dynamic Resource Sharing in Heterogeneous Clusters: Experience with SNL Clusters. In Proceedings of IEEE International Symposium on Cluster Computing and the Grid (CCGrid 2001) , Brisbane, Australia, May 2001.
M. Humphrey, F. Knabe, A. Ferrari, and A. Grimshaw. Accountability and Control of Process Creation in Metasystems. In Proceedings of Network and Distributed Systems Security (NDSS), 2000, San Diego, CA.

Embedded, Mobile, and Real-Time Computing

D. Chu, C. Song, B. Zhang, and M. Humphrey. UVa Bus.NET: Enhancing User Experiences on Smart Devices through Context-Aware Computing. 2004 IEEE Consumer Communications and Networking Conference. Caesar's Palace, Las Vegas, Nevada USA / January 5-8, 2004.
Z. Lu, J. Hein, M. Humphrey, M. Stan, J. Lach, and K. Skadron. Control-Theoretic Dynamic Frequency and Voltage Scaling for Multimedia Workloads. In 2002 International Conference on Compilers, Architectures, and Synthesis for Embedded Systems (CASES 2002). October, 2002.
K. Skadron, M. Humphrey, B. Huang, E. Hilton, J. Luo, and P. Allaire. Supporting Higher-Order Controllers for Magnetic Bearings in a High-Speed, Real-Time Platform using General-Purpose Computers. In International Symposium on Magnetic Suspension Technology (ISMST). Turin, Italy, October 7-11, 2001.
M. Humphrey, K. Skadron, B. Huang, E. Hilton, J. Luo, and P. Allaire. Fitting an Elephant into a Shoebox: Toward High-Speed, Flexible Controllers on General Purpose Computers. In Proceedings of the 2001 International Symposium on Adaptive and Intelligent Systems and Control , Charlottesville, VA, June, 2001.
E. Hilton, V. Yodaiken, M. Humphrey, and P. Allaire. The Real Time Controls Laboratory, an Open Source, Hard Real Time, Controls Implementation Platform. In Proceedings of Second Real-Time Linux Workshop , Orlando, FL, November, 2000.
Marty Humphrey, Edgar Hilton, and Paul Allaire. Experiences Using RT-Linux to Implement a Controller for a High Speed Magnetic Bearing System. Proceedings of 5th IEEE Real-Time Technology and Applications Symposium, Vancouver, Canada, June 1999.
Marty Humphrey and John A. Stankovic. Predictable Threads for Dynamic, Hard Real-Time Environments. IEEE Transactions on Parallel and Distributed Systems. Vol. 10, No. 3, March 1999, pp. 281-296.
Gary Nutt, Scott Brandt, Adam Griff, Sam Siewert, Marty Humphrey, and Toby Berk. Dynamically Negotiated Resource Management for Virtual Environment Applications. IEEE Transactions on Knowledge and Data Engineering. Vol. 12, No. 1, January/February 2000, pp. 78-95.
John A. Stankovic, Krithi Ramamritham , Doug Niehaus , Marty Humphrey, and Gary Wallace. The Spring System: Integrated Support for Complex Real-Time Systems. Real-Time Systems Journal. March 1999.