Re: Stride Stream benchmark

From: P Dickerson (peter@localhost)
Date: Sun Dec 27 1998 - 07:28:43 CST

Results for 225 MHz AMD K6 in TX MoBo and 75 MHz bus clock, 64MB SDRAM, NT4
#include <sys/times.h> needed to be commented out, source saved as tlb.c.
Note pagesize for x86 is 4K, line size is 32 for Pentium and Pentium II
class machines.

Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 12.00.8168 for 80x86
Copyright (C) Microsoft Corp 1984-1998. All rights reserved.

Microsoft (R) Incremental Linker Version 6.00.8168
Copyright (C) Microsoft Corp 1992-1998. All rights reserved.


STRIDE STREAM BENCHMARK. Stride size is 4136 bytes.
   Copyright 1998 Naohiko Shimizu<>
Please report the result with your system.

Transfer size(B) Throughput(MB/S) Access Time(nS)
          136 612.000 13
          264 586.667 14
          520 581.366 14
         1032 402.078 20
         2056 71.610 112

email: peter (at) izabella (dot) demon (dot) co (dot) uk wrote in message <763ac2$o36$>... >Hi, >This is a benchmark program to check the system's stride memory access >performance. Even in cache, most of RISC machines has poor performance >for a large stride data transfer, because of shorttage of the TLB >entries. With this program you can check the out of TLB performance. > >Enjoy, >Naohiko Shimizu. > >=========================================================================== == >/* >STRIDE STREAM BENCHMARK PROGRAM Last updated date : 98.12.26 > >Copyright 1998 by Naohiko Shimizu <> >All rights reserved. > >See GNU Public License 2.0 for the licensing term. > >Many system has poor performance on a large stride problem. This program >will test your system's IN CACHE stride access performance. The inner most >loop is designed to fit in almost all processors 1st cache. >If you have 16KB 1st cache and 32 bytes cache line size, upto 512 bytes >stride transfer will fit in your cache. (16*1024/32) >If you have more knowledge about your system, you can set CACHELINE and >PAGESIZE parameters for more accurate results. > >This program is designed with clock() function of C language, and if the >running time is too short for clock tick the result may not be correct. > >================= example result for AS200 4/100 =========================== >alpha% cc -O2 -o strdstrm -DCACHELINE=32 -DPAGESIZE=8192 strdstrm.c >alpha% ./strdstrm >STRIDE STREAM BENCHMARK. Stride size is 8232 bytes. > Copyright 1998 Naohiko Shimizu<> >Please report the result with your system. > >Transfer size(B) Throughput(MB/S) Access Time(nS) > 136 816.000 10 > 264 24.122 332 > 520 24.124 332 > 1032 24.125 332 > 2056 22.873 350 >=========================================================================== > > >Contact information: > >Dr. Naohiko Shimizu >School of Engr. Tokai Univ. >1117 Kitakaname Hiratsuka >Kanagawa 259-1292 Japan >email: >URL: >

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