Jaspal Subhlok

GRAM (Grid Resource and Application Matching)

Sponsors: DOE (via LACSI) , NSF

Research into ideas, algorithms and systems to observe and measure application and system behavior, on shared clusters and grid environments, and employ that knowledge towards resource allocation and management. A summary of the work going on in this project can be obtained from the following poster:

Tools and Middleware for Parallel and Distributed Processing on Computation Grids.

Key components of ongoing research include the following:

Automatic construction of "application performance skeletons". A skeleton is a short running program that mimics the execution of application it represents, and is used as a probe to measure expected application behavior in an unpredictable network environment.
Modeling the network performance that application operations can expect on shared networks, specifically collective comunication operations. The approach is based on synchronized physical network measurements and modeling network sharing.

Rapid estimation of TCP bandwidth based on inferring flow status from segment arrivals.

Exploring job scheduling models, such as gang scheduling ands independent scheduling for shared environments.

Students currently active in this project:
Mark Huang , Sathish Kumar, Sukhdeep Sodhi , Aditya Toomula, Deepti Vyas, Qiang Xu

Recent publications most relevant to this project:

S. Sodhi and J. Subhlok, Skeleton Based Performance Prediction on Shared Networks, Grids and Advanced Networks Workshop (GAN'04) at CCGRID 2004: The IEEE International Symposium on Cluster Computing and the Grid, Chicago, IL, April 2004. abstract pdf , postscript

S. Venkataramaiah and J. Subhlok , Performance Estimation for Scheduling on Shared Networks, 9th Workshop on Job Scheduling Strategies for Parallel Processing, Seattle, WA, June 2003 pdf , postscript , powerpoint

S. Goteti and J. Subhlok, Communication Pattern Based Node Selection for Shared Networks, Autonomic Computing Workshop: The Fifth Annual International Workshop on Active Middleware Services (AMS 2003), Seattle, WA, June, 2003. abstract , pdf , postscript , powerpoint

A. Singh and J. Subhlok, Reconstruction of Application Layer Message Sequences by Network Monitoring, IASTED International Conference on Communications and Computer Networks 2002, Cambridge, MA, November 2002 pdf , powerpoint

S. Venkataramaiah and J. Subhlok Performance Prediction for Simple CPU and Network Sharing, LACSI Symposium 2002, Santa Fe, New Mexico, October 2002. pdf , postscript , powerpoint

J. Subhlok, S. Venkataramaiah and A. Singh Characterizing NAS Benchmark Performance on Shared Heterogeneous Networks. 11th Heterogeneous Computing Workshop, (HCW '02), held with IPDPS '02, Fort Lauderdale, April 2002. pdfabstract , pdf , postscript , powerpoint

DANCE (Distributed Adaptive Network Caching)

Sponsors: Texas Higher Education Coordinating Board (via ATP program), Compaq/HP, iMimic

The goal of the this project is dynamic, adaptive distributed caching of web objects.

Students currently active in this project:
Qiaomei Huang , Ming Zu

Recent publications most relevant to this project

M. Zu and J. Subhlok, Home Based Cooperative Web Caching, Seventh Multi-Conference on Systemics, Cybernetics and Informatics, Orlando, FL, July 2003. pdf

P. Desai and J. Subhlok. An Adaptive Hierarchy Management System for Web Caches, The 4^th International Conference on Internet Computing, Las Vegas, NV, June 2003. pdf , postscript , powerpoint

P. Du and J. Subhlok. Evaluation of Performance of Cooperative Web Caching with Web Polygraph, 7th International Workshop on Web Content Caching and Distribution, Boulder, CO, July 2002. pdf , postscript , powerpoint

MULTIMEDIA PROSPECTUS (This is Not an Acronym)

Sponsor: University of Houston, Educational Technology and Outreach ( FDIP B Program)

This is an educational project. We are developing a comprehensive interactive multimedia introduction to a selected set of courses offered by the Computer Science department. course prospectus includes a multimedia introduction to the syllabus, audio/video clips from lectures, interactive quizzes to test background knowledge, and animations to demonstrate key concepts and problem solving. This pilot project is intended to lead the way to interactive multimedia prospectuses for courses and degree programs across the University.