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Performance analysis of the Alpha 21264-based Compaq ES40 system by Zarka Cvetanovic; R. E. Kessler is a Computer Science article available to read on EtoBox.

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__This paper evaluates performance characteristics of the Compaq ES40 shared memory multiprocessor. The ES40 system contains up to four Alpha 21264 CPU's together with a high-performance memory system. We qualitatively describe architectural features included in the 21264 microprocessor and the surrounding system chipset. We further quantitatively show the performance effects of these features using benchmark results and profiling data collected from industry-standard commercial and technical workloads. The profile data includes basic performance information - such as instructions per cycle, branch mispredicts, and cache misses - as well as other data that specifically characterizes the 21264. Wherever possible, we compare and contrast the ES40 to the AlphaServer 4100 - a previous-generation Alpha system containing four Alpha 21164 microprocessors - to highlight the architectural advances in the ES40. We find that the Compaq ES40 often provides 2 to 3 times the performance of the AlphaServer 4100 at similar clock frequencies. We also find that the ES40 memory system has about five times the memory bandwidth of the 4100. These performance improvements come from numerous microprocess

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Author

Zarka Cvetanovic; R. E. Kessler

Publisher

ACM

Published

2000

Language

EN

Field

Computer Science (Physical Sciences)