benchmarks

[Steve Thompson]

>It's a good thing I know that my numbers are the only right ones :-),
>otherwise I might have acted on information like this.
>
>Jim Helman
>Department of Applied Physics			P.O. Box 10494
>Stanford University				Stanford, CA 94309
>(jim at thrush.stanford.edu) 			(415) 723-4940	

You may (or may not!) be interested in some numbers I have on my application,
which is a totally CPU-bound Molecular Dynamics simulation (no I/O, small memory
requirements, single precision). I don't have any numbers for the SGI R2000
boxes, but a rough estimate could be obtained from the DECstation 3100 times
(DS3100 is R2000/R2010, 16.67MHz). The speeds are all relative to a VAX 8250 =
1.00, and are arranged in descending order of speed. I have some preliminary
numbers for the SPARCstation 1 (approx. half of the DECstation 3100); these are
not in the table because they are not final. 

Steve

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Machine			Relative Speed		Notes
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Cray-1			82.4			fully vectorized
IBM 3090-600		35.1			(opt(3) vector
FPS 264			15.6			IBM 3090 host
DECstation 3100		8.0			f77 -O2
VAX 8700		4.42			VMS V4.7
VAX 8530		3.12			VMS V4.7
Sun 4/260		2.54			f77 -O
VAXstation 3200		2.47			VMS V4.7
VAXstation 3100		2.44			VMS V5.1-B
Sun 3/160		1.49			OS 3.5 with fpa
VAX 8250		1.00			VMS V4.7
MicroVAX II		0.64			VMS V4.7
Sun 3/60		0.44			OS 3.5, no fpa
Sun 3/50		0.33			ditto

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