參數(shù)資料
型號(hào)： BENCHMARKING
英文描述： Benchmarking the Am186EM: Using the Dhrystone V2.1 As An Example Application Note? 1.66MB (PDF)
中文描述： 基準(zhǔn)Am186EM：作為示例應(yīng)用注意Dhrystone的V2.1版本？ 1.66MB（PDF格式）
文件頁數(shù)： 59/88頁
文件大?。?/td> 1701K
代理商： BENCHMARKING
59
Appendix A
Understanding the Dhrystone Benchmark
The included text was taken from the source code of the Dhrystone benchmark.
Of interest is the information about the testing done on the benchmark. This
data helps the programmer determine the amount of similarity between the
benchmark and the actual product code. Programs with a large degree of similar
operations and memory utilization should see matching performance gains.
/***********************************************************************
*
* "DHRYSTONE" Benchmark Program
* -----------------------------
*
* Version: C
*
* Author: Reinhold P. Weicker
* Siemens AG, E STE 35
* Postfach 3240
* 8520 Erlangen
* Germany (West)
* Phone: [xxx-49]-9131-7-20330
* (8-17 Central European Time)
* Usenet: ..!mcvax!unido!estevax!weicker
*
Original Version (in Ada) published in "Communications of the ACM"
vol. 27., no. 10 (Oct. 1984), pp. 1013 - 1030, together with the
statistics on which the distribution of statements etc. is based. In
this C version, the following C library functions are used:
- strcpy, strcmp (inside the measurement loop)
- printf, scanf (outside the measurement loop)
In addition, UNIX system calls "times ()" or "time ()" are used for
execution time measurement. For measurements on other systems, these
calls have to be changed.
Collection of Results:
Reinhold Weicker (address see above) and Rick Richardson
PC Research. Inc.
94 Apple Orchard Drive
Tinton Falls, NJ 07724
Phone: (201) 834-1378 (9-17 EST)
Usenet: ...!seismo!uunet!pcrat!rick
Please send results to Reinhold Weicker and/or Rick Richardson.
- Complete information should be given on hardware and software used.
- Hardware information includes: Machine type, CPU, type and size of
caches; for microprocessors: clock frequency, memory speed (number of
wait states).
- Software information includes: Compiler (and runtime library)
manufacturer and version, compilation switches, OS version.
- The Operating System version may give an indication about the
compiler; Dhrystone itself performs no OS calls in the measurement loop.
History: This version has been made for two reasons:
1) There is an obvious need for a common C version of
Dhrystone, since C is at present the most popular system
programming language for the class of processors
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