Ranjith Vasireddy

Ranjith Vasireddy
PhD Candidate in ECE at Duke University
Durham, NC, USA - 27708
Phone: 919.660.5217 (O) Email: rv5[at]ee.duke.edu

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Research

I am PhD candidate working with Prof. Kishor S Trivedi.

I am interested in Availability Performance and Reliability analysis, Autonomic Computing, Distributed Systems and Computational Biology.
Availability world is very interesting. When downtime should be only 5.26 minutes/year to achieve 0.99999 (five 9s) availability, what about software giants claiming five 9s availabiltiy? I thought their claims are not true, but are model-based. I used to think whether such claims can ever be achieved practically? Gray and Reuter's book on Transaction Processing taught me that five 9s is indeed practically acheivable, but with a lot of difficulty. If you want to know how, have a look at my slides in PDF.
Related approach to achieve high-availability is to pro-actively rejuvenate the software by predicting the failure before failure actually happens. This approach is called Software Rejuvenation.

My Advisor

Areas of interest

Availability & Performance Analysis, Autonomic Computing, Distributed Systems, Fault-Tolerant Computing Systems, Computational Biology

Publications

Ranjith Vasireddy, Kishor S Trivedi. Defining Steady-State Service Level Agreeability using Semi-Markov Process. In Sup. Proceedings of the IEEE Intl Conf on Dependable Systems and Networks (DSN), Philadelphia, PA, USA, Jun 2006. PDF.
Ranjith Vasireddy, Somenath Biwas. Modeling Gene Regulatory Network of Fission Yeast Cell Cycle using Hybrid Petri Nets. In Proceedings of the 11th International Conference on Neural Information Processing (ICONIP), November 2004,© Springer-Verlag Lecture Notes in Computer Science, LNCS 3316: 1310-1315. PDF.
Ranjith Vasireddy. Mathematical Modeling of Regulation in a Network of Genes. In Proceedings of the Second National Conference on Mathematical and Computational Modeling (NCMCM), Dec 2003

In review and preparation

Ranjith Vasireddy, Kishor S Trivedi. Availability Analysis of Quorum Based Mutual Exclusion Schemes. Yet to submit.
Kishor S Trivedi, Ranjith Vasireddy, David Trindade, Swami Nathan, Rick Castro. Modeling High Availability Systems. Submitted to PRDC 2006.

Poster Presentation

Ranjith Vasireddy, Shivnath Babu, Kishor S Trivedi. Improving Database Availability by Recollecting Statistics at Optimal Intervals. PDF. IBM Research Day. April, 2006 (POSTER).

Useful

Relationship between various probability distributions PDF. Ack: Jain, Art of Computer Systems Performance Analysis.

Teaching: I taught Clusters, Multiprocessors and Google Cluster (PDF), Pipelining and Architecture Performance (PDF) lectures in Spring 2006.

Master's Thesis

Here is my Master's Thesis (It is not much related with my area of doctoral research, except in modeling).

Last Updated: Jul 2, 2006.