[SunRescue] How FAST is a SUN IPC

[Dave McGuire]

  The "rc5 on intel" thing has been hashed out over and over...Here's
an excerpt from distributed.net's rc5 faq that explains why:

- Why are Intel and PowerPC computers so much faster than other
- platforms?
-
-   Integral to the mathematics of the RC5 algorithm are 32-bit rotate
- operations. For whatever reason, the designers of the x86 and the
- PowerPC architectures decided to implement the rotate function as a
- hardware instruction. Many other CPUs do not have built-in hardware
- rotate instructions and must emulate the operation by (at the very
- least) two shifts and a logical OR. This handicap is why many
- non-Intel and non-PowerPC computers run RC5 slower than one might
- expect based on real-world benchmarks. It is also the main reason why
- the RC5 client is a poor benchmark to use in determining the speed or
- performance of a particular CPU.


        -Dave McGuire

On July 6, nick at ns.snowman.net wrote:
> It all depends on what you are doing.  At rc5 decryption a slow 486 will
> Stomp on anything up to a [,super,hyper]sparc 100 or 150.  I don't know of
> any other examples like that, however they exist.
> 	Nick
> 
> On Thu, 6 Jul 2000, Dave McGuire wrote:
> 
> > 
> >   Wow...what OS was this IPX running?  I've always had to get well up
> > into the mid-range Pentium family before a PeeCee would perceptibly
> > outperform an IPX...*especially* in graphics performance...I've
> > always run either SunOS4 or NetBSD/sparc on them.
> > 
> >           -Dave McGuire
> > 
> > On July 6, scohen - Stephen Cohen wrote:
> > > A SPARCstation IPX running with the PowerUp CPU (40 to 80Mhz) upgrade is not
> > > quite as fast as an Intel 486dx2 50Mhz running Linux 6.2.  However, some of
> > > the perceived speed difference may be that the IPX appears to have much
> > > slower graphics (X-based GUI) than the Intel box.
> > > 
> > > All of the above is 'seat of the pants' estimates.
> > > 
> > > -----Original Message-----
> > > From: chris Gnther [mailto:madram at video.de]
> > > Sent: Thursday, July 06, 2000 10:16 AM
> > > To: MailingList SUN Help
> > > Subject: [SunRescue] How FAST is a SUN IPC
> > > 
> > > 
> > > Hi all,
> > > 
> > > some of you propably do know me and my "little" problem with my SUN IPC.
> > > Now - after 6 weeks of consequentely trying to get it work and failling
> > > miserably - I come to a point where I'd like to know what exactly I could
> > > do with it would ever get it to work.
> > > 
> > > So my question is:
> > > 
> > >     How fast or strong is a SUN IPC?
> > > 
> > > My configuration is as follows:
> > > - SUN IPC with WEITEK-Chip
> > > - all 12 RAM Banks filled (still don't know how much RAM this is) 
> > > - 2GB IBM HDD
> > > - a second Framebuffer card
> > > - an ISDN-card 
> > > - and two 16" SUN-Monitors
> > > 
> > > Can anyone tell me what exactly I can do with it.
> > > 
> > > To give you a point on what I normally do with my PC running SOL8:
> > > - writing with LaTeX2e
> > > - Database-Developing with mySQL (runs on my Server)
> > > - C and C++ programming
> > > 
> > > 
> > >     thanks in advance,
> > > 
> > >         chris
> > > 
> > > +---------------------------------+
> > > |             chris               |
> > > | ------------------------------- |
> > > |  database design & programming  |
> > > |   agentur fiedler / video.de    |
> > > |                                 |
> > > |                 madram at video.de |
> > > +---------------------------------+ 
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> > 
> 
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