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Programming > Assembly x86 > Re: AMD's 3DNow...
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Re: AMD's 3DNow! imprecise

by "James Van Buskirk" <spamtrap@[EMAIL PROTECTED] > Apr 10, 2008 at 01:08 PM

"kuratkull" <spamtrap@[EMAIL PROTECTED]
> wrote in message 
news:38432b4f-1f55-45ed-ba66-deedac70d272@[EMAIL PROTECTED]
> Thanks for the long post, I really appreciate it Phil. Although the
> point was not about the algorithm itself, but about any means to have
> the app run faster with "simple" ASM tricks. But It doesn't matter any
> more, since I have implemented a Sieve of E. in 55 lines which finds
> 10 million primes in 0.54 seconds, so I guess I managed to write fast
> code anyway(because it's possible to write a rather slow S. of E.
> too).
> The 3DNow! problem is fixed by simply not using it, so I guess this
> topic has served its purpose.

It's funny how everyone who writes a Sieve program thinks it's fast.
Fot timing results on my old 1.4 GHz Athlon, see
http://home.comcast.net/~kmbtib/Sieve30h/time1000000000.dat
and similar files.  Writing a fast sieve takes a lot of effort
because there are so many features that can be added, each of
which contributes significantly to performance.

-- 
write(*,*) transfer((/17.392111325966148d0,6.5794487871554595D-85, &
6.0134700243160014d-154/),(/'x'/)); end
 




 12 Posts in Topic:
AMD's 3DNow! imprecise
"kuratkull@[EMAIL PR  2008-04-02 12:50:35 
Re: AMD's 3DNow! imprecise
kuratkull <spamtrap@[  2008-04-03 14:23:43 
Re: AMD's 3DNow! imprecise
kuratkull <spamtrap@[  2008-04-03 14:13:07 
Re: AMD's 3DNow! imprecise
Sebastian Biallas <sp  2008-04-04 00:23:22 
Re: AMD's 3DNow! imprecise
Waldek Hebisch <spamt  2008-04-04 02:23:23 
Re: AMD's 3DNow! imprecise
Terje Mathisen <spamt  2008-04-04 07:36:03 
Re: AMD's 3DNow! imprecise
kuratkull <spamtrap@[  2008-04-03 23:13:00 
Re: AMD's 3DNow! imprecise
Phil Carmody <thefatph  2008-04-04 23:18:38 
Re: AMD's 3DNow! imprecise
kuratkull <spamtrap@[  2008-04-03 22:45:12 
Re: AMD's 3DNow! imprecise
Sebastian Biallas <sp  2008-04-07 13:55:19 
Re: AMD's 3DNow! imprecise
kuratkull <spamtrap@[  2008-04-08 05:19:12 
Re: AMD's 3DNow! imprecise
"James Van Buskirk&q  2008-04-10 13:08:32 

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tan12V112 Thu Jul 24 14:59:39 CDT 2008.