Allalaghatta Pavan

Learn More
This paper describes the distributed system, network and software architecture, the application development environment, the performance, and the early lessons learned on the ATM LAN testbed Mercuri established at the Honeywell Technology Center, to develop distributed multimedia technologies for realtime control applications. We have developed a(More)
This paper presents the Real Time Adaptive Resource Management system (RTARM1), developed at the Honeywell Technology Center. RTARM supports provision of integrated services for real-time distributed applications and offers management services for end-to-end QoS negotiation, QoS adaptation, real-time monitoring and hierarchical QoS feedback adaptation. In(More)
Network computing ooers great potential for further advances in the amount of computing power available to large-scale compute-intensive applications. This paper describes a network architecture upon which a high performance distributed computing environment may be constructed. The architecture uses a specially designed Time and Wavelength Division(More)
Efficient one-pass computation of F/sub 0/, the number of distinct elements in a data stream, is a fundamental problem arising in various contexts in databases and networking. We consider the problem of efficiently estimating F/sub 0/ of a data stream where each element of the stream is an interval of integers. We present a randomized algorithm which gives(More)
Boosted by technology advancements, government and commercial interest, ad-hoc wireless networks are emerging as a serious platform for distributed mission-critical applications. Guaranteeing QoS in this environment is a hard problem because several applications may share the same resources in the network, and mobile ad-hoc wireless networks (MANETs)(More)
This paper presents an innovative hierarchical feedback adaptation method that efficiently controls the dynamic QoS behavior of real-time distributed data-flow applications, such as sensor-based data streams or mission-critical command and control applications. We applied this method in the context of the Real Time Adaptive Resource Management system, a(More)
We present end-to-end performance of digital coded video (JPEG, MPEG-1, and MPEG-2) over a local asynchronuous transfer mode (ATM) network. We discuss performance in terms of both delay (jitter) and frame loss as a function of load. The experimental data reveal that the burstiness of the variable bit-rate-coded video streams degrades the performance(More)
There is growing interest in using switched network technology such as asynchronous transfer mode (ATM) to support both continuous bit rate multimedia data and variable bit rate burst traffic for distributed computing. Most previous work and studies have focused only on the real-time support imposed by the isochronous requirements of the video or audio(More)