Two-level cache performance for multiprocessors
Article Abstract:
For shared bus multiprocessors operated in multiprogramming mode, the addition of second-level caches tends to significantly increase system performance. Trace-driven simulation was employed to obtain performance measurements over a range of system parameters, with the cache sizes at both levels being the parameters of most interest. For both light and heavy system loading, the addition of second-level caches was found to boost system performance. For heavily loaded multiprocessor cases, the workload-averaged percentage increases in performance ranged from 187% with 32k byte first-level caches to 507% with 4K byte first-level caches when when 128k byte second-level caches were added. The main memory configuration and number of processors largely dictates the performance of a shared bus multiprocessor running in multiprogramming mode. The addition of larger second-level caches to the system results in increased system performance over a range of system configurations and workloads. (Reprinted by permission of the publisher.)
Publication Name: SIMULATION
Subject: Engineering and manufacturing industries
ISSN: 0037-5497
Year: 1993
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A comparative study between Petri Net and SLAM
Article Abstract:
The purpose of this paper is to illustrate the techniques of converting SLAM (Simulation Language for Alternative Modeling) models to Petri Nets and vice versa. Conversion of SLAM models into Petri Nets will allow the modeler to represent complex systems graphically. On the other hand, conversion of Petri Nets into SLAM will result in quick and efficient generation of statistical results with very little programming effort. For demonstration purposes a SLAM model of a simple queuing system has been converted into a PN one and contrasted. A PN model of CPU-IO interaction was converted into SLAM model, where the results obtained using both tools are shown to be identical. (Reprinted with permission of the publisher.)
Publication Name: SIMULATION
Subject: Engineering and manufacturing industries
ISSN: 0037-5497
Year: 1992
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