A Brief History.

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What's New(s)...?

Professional:

• February 5th, 2008: Received an "Outstanding Mentor Award" from ORNL and the Oak Ridge Institute for Science and Education

• November 8th, 2007: Chao Wang, intern, who worked with me through the ORISE Astro program, is one of three students awarded the prestigious SC Fellowship, ACM/IEEE-CS HPC Ph.D. Fellowship. The fellowship was awarded, in part, for his previous/planned work on the CenterSS project.

• Recent Papers accepted:

  • stdchk: A Checkpoint Storage System for Desktop Grid Computing, in the 28th Int'l Conference on Distributed Computing Systems (ICDCS 2008), June 2008.
  • Timely Offloading of Result-Data in HPC Centers, in the 22nd ACM Int'l Conference on Supercomputing (ICS'08), June 2008.

• Service:

  • Proposal Review Panel: DOE Early Career Awards 2006
  • PC Member: IPDPS 2009, WASL 2008, DADC 2008, PPPJ 2008, ICDCS 2007, GRID (2007, 2006), Supercomputing 2006
  • External Reviewer: Supercomputing (2007, 2008) Journal of Grid Computing (2005, 2008), IEEE Transactions on Parallel and Distributed Systems (2006), IEEE Cluster 2006, IEEE Peer to Peer Computing 2006

Personal Trivia:

• My recent non-fiction read, "The Scientists-- A history of science told through the lives of its greatest inventors" by John Gribbin

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Research Projects.

• Distributed Storage Systems Research

  • FreeLoader: A client-side cache for scientific data using distributed storage scavenging
  • stdchk: A Checkpoint Storage System for HPC Applications
  • CenterSS: HPC Center Storage as a System
    • Summary presentation of ongoing storage research
    • Funding: ORNL Ultrascale LDRD (PI), ORNL Terascale LDRD (Co-PI), NSF (Senior Personnel)

• Distributed Computation/Data Management for the Spallation Neutron Source (SNS)

  • PI on ORNL LDRD proposal (CoPI: Al Geist): To build a science gateway for SNS data and computational operations (10/2003 - 10/2005).
  • Contributor to the SNS analysis software project (10/2003 - ).

• Bringing Neutron Science data and simulations to the TeraGrid

• Bulk Data Transfer Forecasts and the Implications to Grid Scheduling - Ph.D. Dissertation Work

  This involved research and development on Data Grid tools and techniques in conjunction with Argonne's Distributed Systems Laboratory. My doctoral work was on Globus/GriPhyN Data Grid development - built techniques to locate data in highly replicated environments; developed performance prediction strategies for bulk Data Grid transfers aiding data transfer schedules; developed co-allocation middleware enabling parallel and fast access to replicated data, etc. More details in the publications page.

• Performance Oriented Distributed Operating System, (PODOS)

  A distributed OS for Linux. More details in the publications page.

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Software Downloads.

Below are a few software downloads, stuff that I've worked on and off since sometime now - Most of them could be good starting points for future work, reference or simple know how...

Statistical Tools for Predicting Bulk GridFTP Data Transfers.     Parallel Downloading of Bulk GridFTP Transfers     Linux Kernel with PODOS (Distributed OS) patches.     Sample Framework for Distributed Protocol Development.    

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Addresses.

Office: Computer Science and Mathematics Division Oak Ridge National Laboratory One Bethel Valley Road PO Box 2008 MS6016 Oak Ridge, TN 37831 email: vazhkudaiss at ornl dot gov Work: 865-576-5547 Fax: 865-576-5491 (Fax through email)

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