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A Mean Value Analysis (MVA) approximation is presented for computing the average performance measures of closed-, open-, and mixed-type multiclass queuing networks containing Preemptive Resume (PR) and nonpreemptive Head-Of-Line (HOL) priority service centers. The approximation has essentially the same storage and computational requirements as MVA, thusâ€¦ (More)

A Mean Value Analysis (MVA) approximation is presented for computing the average performance measures of closed multiclass queueing networks containing non pre-emptive Head Of Line (HOL) and Pre-empt Resume (PR) priority centers. The approximation has the same storage and computational requirements as MVA thus allowing computationally efficient solutions ofâ€¦ (More)

Multiresource queuing systems are of particular maportance in modding compnter systems because a job must have access to a processor and main memory sunultaneousIy in order to proceed. Existing methods of determining maximum processing rates for multiresourcequeuing systems are limited to small memory sizes because problem compleraty grows exponentiallyâ€¦ (More)

SIMPAS is a portable, strongly-typed, event-oriented, discrete system simulation language based on PASCAL. It has most of the useful features of SIMSCRIPT II.5. However, because of the type checking inherent in SIMPAS, a SIMPAS program is easier to debug and maintain than the corresponding SIMSCRIPT II.5 program. This paper briefly describes SIMPAS andâ€¦ (More)

RP3, the Research Parallel Processing Prototype, was a research vehicle for exploring the hardware and software aspects of highly parallel computation. RP3 was a shared-memory machine that was designed to be scalable to 512 processors; a 64-processor machine was in operation from October 1988 through March 1991. A parallel-programming environment based onâ€¦ (More)

Queueing theoretic models of single and multi-processor computer systems have received wide attention in the computer science literature. Few of these models consider the effect of finite memory size of a machine and its impact on the memory scheduling problem. In an effort to formulate an analytical model for memory scheduling we propose four simple modelsâ€¦ (More)

Given a collection of distributed programs and the modules they use, the module allocation problem is to determine an assignment of modules to processors that minimizes the total execution cost of the programs. Standard approaches to this problem are based on solving either a network flow problem or a constrained 0-1 integer programming problem.
In thisâ€¦ (More)

Ada, the new Department of Defense standard language, contains many new features designed to facilitate the rapid construction of software for embedded computer system applications. However, Ada is also suitable for general purpose programming, and the size and backing of the Ada project means that the language will enjoy considerable use and support. It isâ€¦ (More)