[RC5] AXP client slow on RC5

Dan Sugalski dan at sidhe.org
Thu May 31 20:53:00 EDT 2001


On Thu, 31 May 2001, Gregor Terrie wrote:

> 'llo,
> 
> I stopped working on the OGR project a while ago, to completely devote my 
> cycles to RC5 (like in the good old days).
> 
> My question is rather simple: Is it normal for a DPW500au (Digital Alpha 
> Workstation at 500Mhz) to  Benchmark for RC5 core #0 (axp bmeyer) 
> 0.00:00:16.60 [806,546.70 keys/sec] ?

Yes. RC5 requires rotating integers around, and the Alphas don't have
hardware rotate instructions. x86 chips do. Alphas scream on some of the
other cores, like the DES, but not on RC5.

If you're looking for the best bang for your cycles, run OGR.

					Dan

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