The actual performance of parallel programs is often disappointing, especially in comparison to the peak performance ooered by the underlying hardware. There are many sources of performance degradation and understanding these sources is necessary to improve application performance. In this paper we discuss performance modeling, an approach to understanding the performance of parallel systems. W...

A parallel component environment places constraints on performance measurement and modeling. For instance, it must be possible to instrument the application without access to the source code. In addition, a component may admit multiple implementations, based on the choice of algorithm, data structure, parallelization strategy, etc., posing the user with the problem of having to choose the ‘corr...

As IC technologies scale to finer feature sizes, it becomes increasingly difficult to control the relative process variations. The increasing fluctuations in manufacturing processes have introduced unavoidable and significant uncertainty in circuit performance; hence ensuring manufacturability has been identified as one of the top priorities of today’s IC design problems. In this paper, we revi...

This paper deals with the role of performance modeling tools. It introduces 3 major tool development centers and shows how a given tool can be applied to investigate the performance of a finite-source retrial queueing system.

As analyses of system behavior and complexity through computer modeling and simulation have been growing, high performance modeling is noticed to handle behavior and complexity of modern large-scale systems. The high performance modeling focuses on high resolution representation of system and performance improvement. This paper presents a quantized system modeling as an effective high performan...

This symposium is co-sponsored by the Human Performance Modeling Technical Group (HPM-TG) of the Human Factors & Ergonomics Society. Three Research Talks and a Panel Discussion were presented. Each talk used a different style of cognitive modeling and addressed a different problem of interest to the human factors community. For the Panel Discussion, three additional members of the HPM-TG joined...

To fully realize consolidation benefits, businesses must focus on the performance and service levels provided to users in addition to reducing unused capacity. Performance modeling has improved the understanding of the performance of today’s multitier applications.Although traditional analytic and statistical techniques are useful for gaining insight into the performance of individual component...

of Dissertation Presented to the Graduate School of the University of Florida in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy PERFORMANCE MODELING AND ANALYSIS OF MULTICAST INFRASTRUCTURE FOR HIGH-SPEED CLUSTER AND GRID NETWORKS By Hakki Sarp Oral December 2003 Chair: Alan D. George Major Department: Electrical and Computer Engineering Cluster computing provide...

This paper investigates TCP dynamics and performance over proxies that shorten the TCP feedback loop by segmenting the end-to-end connection. Such proxies are often used to improve the TCP performance, e.g. a splitting/spoofing proxy in satellite communication, and more commonly, a web cache. Through analysis, we attempt to develop a basic understanding of the properties of TCP dynamics when su...