Re: The stream benchmark results for an SX3-44

From: Michel Dansereau (aspgmid@cid.aes.doe.CA)
Date: Sat Jun 27 1992 - 21:29:21 CDT


        Mr. McCalpin,
        
        The following message is the one that I sent a while back to
contribute to your system performance database. HNSX have asked
me to add the precision that this is for a 1 CPU benchmark and not 4 as could
be interpreted from the entry.

        I would appreciate it if you could make the correction and somehow
make it public.

        Thanks for your time,
        
P.S. Was the SS92 competition worth your while?

-- 
------------------------------------------------------------------------------
Michel Dansereau		       | Environment Canada
Tel:	(514) 421-4696		       | Atmospheric Environment Service (AES)
Email:	mdansereau@cid.aes.doe.ca      | Dorval Computing Centre (CMIS) 
Fax:	(514) 421-4703		       | Systems Group (CMISS)
------------------------------------------------------------------------------
	
aspgmid
> 
> 
> 
> 	M. McCalpin
> 	
> 	I ran the Stream benchmark on our SX3/44 and obtained the following
> results:
> 
> --------------------------------------
>  The overhead of calling second = 2.251414E-06 seconds.
>  Timing calibration ; time = 9.539266917478173 hundredths of a second
>  Increase the size of the arrays if this is <30  and your clock precision is =<1/100 second
>  ---------------------------------------------------
> Function     Rate (MB/s)  RMS time   Min time  Max time
> Assignment:16940.9591      0.0331      0.0331      0.0331  
> Scaling   :15640.6689      0.0358      0.0358      0.0359  
> Summing   :22436.5215      0.0376      0.0374      0.0380  
> SAXPYing  :21972.1612      0.0383      0.0382      0.0388  
> --------------------------------------
> 
> Modifications:
> 	The time required to get the "time" was evaluated and subtracted from
> the timing of the loops.
> 
> 	The second() function was written to take advantage of the internal
> free running "tic counter" ( f = 1 / 2.9E09 ).
> 
> 
> 
> 	HNSX personnel on site have approved of these figure and mentioned
> that they are conservative.
> 
> 
> 
> -- 
> ------------------------------------------------------------------------------
> Michel Dansereau		       | Environment Canada
> Tel:	(514) 421-4696		       | Atmospheric Environment Service (AES)
> Email:	mdansereau@cid.aes.doe.ca      | Dorval Computing Centre (CMIS) 
> Fax:	(514) 421-4703		       | Systems Group (CMISS)
> ------------------------------------------------------------------------------
> 



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