Re: UDB speed comparison
Linus Torvalds (torvalds@cs.helsinki.fi)
Wed, 25 Sep 1996 08:33:11 +0300 (EET DST)
On Tue, 24 Sep 1996, Greg R. Roelofs wrote:
>
> "Tracy R. Reed" <treed@straylight.connectnet.com> wrote:
>
> > host CPU Time
> >
> > redhat-udb 166Mhz 21066 0:10.01
> > straylight 66Mhz 486 1:24.43
> > sd 90Mhz Pentium 0:43.55
> > rohan SS1000E 1cpu 0:09.17
> > voyager 133Mhz Pentium 0:15.58
> > helios SS20 0:10.71
> >
> > So the UDB came up with 2,400 digits of pi in 10.01 seconds. Not bad. :)
> > It's the second fastest machine I have access to, but just barely. I wish
> > I still had that old account on the Cray II at Kirtland AFB. :)
>
> Here's the C90 result (Cray cc, not gcc; not vectorized/parallelized/etc.):
>
> time ./pihex > /dev/null
> 5.7767u 0.0361s 0:05 97%
>
> Presumably you're counting user+system time, so 5.81 seconds.
>
> (Do I win? :-) )
No.
[torvalds@ev5 torvalds]$ time a.out > /dev/null
Command had non-zero exit status 13
3.97user 0.00system 0:04.02elapsed 98%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (71major+18minor)pagefaults 0swaps
(ev5/333, and I don't expect to win this either, but I enjoy beating cray's
with my home machine ;)
Linus