Date: Fri, 16 Aug 1996 14:41:13 +0900 (JST) From: Michael Hancock <michaelh@cet.co.jp> To: FreeBSD Hackers <Hackers@FreeBSD.ORG> Subject: Re: STREAM benchmark, (not streams) Message-ID: <Pine.SV4.3.93.960816143321.23741B-100000@parkplace.cet.co.jp> In-Reply-To: <Pine.SV4.3.93.960813122727.15140A-100000@parkplace.cet.co.jp>
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This site has the benchmark, http://www.cs.virginia.edu/~mccalpin/ Here's what I got on the following hardware: Tyan Tempest II MB (Neptune based and slow) 32MB 60ns parity RAM 2 x 16MB simms P166 ------------------------------------------------------------- This system uses 8 bytes per DOUBLE PRECISION word. ------------------------------------------------------------- Array size = 1000000, Offset = 0 Total memory required = 22.9 MB. Each test is run 10 times, but only the *best* time for each is used. ------------------------------------------------------------- Your clock granularity/precision appears to be 7812 microseconds. Each test below will take on the order of 250000 microseconds. (= 32 clock ticks) Increase the size of the arrays if this shows that you are not getting at least 20 clock ticks per test. ------------------------------------------------------------- WARNING: The above is only a rough guideline. For best results, please be sure you know the precision of your system timer. ------------------------------------------------------------- Function Rate (MB/s) RMS time Min time Max time Assignment: 40.1569 0.4073 0.3984 0.4453 Scaling : 40.1569 0.4228 0.3984 0.5156 Summing : 49.5484 0.5183 0.4844 0.6094 SAXPYing : 49.5484 0.5247 0.4844 0.6328 I compiled it on FreeBSD Current. cc -O stream_d.c second_cpu.c -o stream_d -lm I'm curious to see some numbers from others, especially from people with Tyan Tomcat I or II motherboards. The Tomcat I was used in the recent BSDI web benchmarks. Regards, Mike Hancock
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