Event Details
On Accessing Multiple Internet Mirror Servers in Parallel
Presenter: Yousry Abdel-Hamid
Supervisor:
Date: Tue, September 30, 2003
Time: 15:30:00 - 16:30:00
Place: EOW 430
ABSTRACT
Abstract:
The conventional downloading of any file where the receiver (client) retrieves data from a single source (server) is the typical scenario of accessing the Internet. From the time that the connection is established, the downloading process proceeds via a single client-server connection until the complete file is retrieved successfully. The time to download a file is influenced by the efficiency of the server to handle the load of the receivers, the link bandwidth, intermediate router's buffer sizes, fluctuations of traffic at different times of the day which may result in packet collisions at bottlenecks and finally the reciever's physical link type e.g. Cable, ADSL, Modems.. etc
In this seminar, an introduction to our methodology to gauge the performance of parallel access to multiple mirror sites on the Internet will be given. The study is based on the Digital Fountain approach designed by J. Byers et al. in which Tornado codes are utilized to minimize decoding time at the expense of injecting extra packets into the system. In this study, both Reed-Solomon and Tornado codes are considered along with different packet transmission techniques. OPNET Modeler is employed as a powerful event driven simulation platform which provides a very close look at the performance of the system.
For further information please contact:
Yousry Abdel-Hamid (yousry@ece.uvic.ca)