Accession Number : ADA293060

Title :   Micro Benchmark Analysis of the KSR1.

Descriptive Note : Research rept.,

Corporate Author : UNIVERSITY OF SOUTHERN CALIFORNIA MARINA DEL REY INFORMATION SCIENCES INST

Personal Author(s) : Saavedra, Rafael H. ; Gaines, R. S. ; Carlton, Michael J.

PDF Url : ADA293060

Report Date : NOV 1993

Pagination or Media Count : 16

Abstract : A new approach, micro benchmarks has recently been developed. Using this technique, we have analyzed the KSR1, and in particular the Allcache memory architecture and ring interconnection. We have been able to elucidate many facets of memory performance. The technique has enabled us to identify and characterize parts of the memory design not described by Kendall Square Research. Our results show that a miss in the local cache can incur a penalty ranging from 7.5 microseconds to 500 microseconds (when a dirty page in the local cache must be evicted). The programmer must be very careful in placement and accessing of data to obtain maximum performance from the KSR1; the data presented here will help in understanding the performance actually obtained. (AN)

Descriptors :   *COMPUTER ARCHITECTURE, *MULTIPROCESSORS, *COMPUTER NETWORKS, TEST AND EVALUATION, DATA MANAGEMENT, DISTRIBUTED DATA PROCESSING, COMPUTER COMMUNICATIONS, PERFORMANCE(ENGINEERING), INPUT OUTPUT PROCESSING, PARALLEL PROCESSORS, FORTRAN, CIRCUIT INTERCONNECTIONS, STANDARDS, ACCESS TIME, BUFFER STORAGE, FLOATING POINT OPERATION, BLOCK ORIENTED RANDOM ACCESS MEMORIES.

Subject Categories : Computer Hardware
      Computer Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE