Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!amelia!msf
From: msf@amelia.nas.nasa.gov (Michael S. Fischbein)
Newsgroups: comp.lang.fortran
Subject: Re: Want Fast Double Precision?
Message-ID: <159@amelia.nas.nasa.gov>
Date: 1 Feb 88 20:32:55 GMT
References: <32300003@ccvaxa> <6690011@hpclcdb.HP.COM>
Reply-To: msf@amelia.nas.nasa.gov (Michael S. Fischbein)
Organization: NASA Langley Research Center, Hampton, VA
Lines: 19

In article <6690011@hpclcdb.HP.COM> cdb@hpclcdb.HP.COM (Carl Burch) writes:
>> msf@amelia.nas.nasa.gov (Michael S. Fischbein) writes :
>> The HP Precision Architecture hardware floating point is faster at
>> double precision than single precision.
>
>I just ran the Linpack and Whetstone benchmarks on our HP9000 Series 840,
>and the ratios of the times were 1.44 and 1.52, respectively - both double 
>longer than single.  (NOTE : Usual disclaimer about not being official

OOPS.  I based my remark on the results we obtained with linpack and
our own f77 benchmark suite running on the Model 850, and generalized to
the rest of the HPPA clan.  Sorry about the generalization, but I'm
still curious about the 850.
		mike

-- 
Michael Fischbein                 msf@ames-nas.arpa
                                  ...!seismo!decuac!csmunix!icase!msf
These are my opinions and not necessarily official views of any
organization.