decent performance from G4 Macs?
hahn at physics.mcmaster.ca
Sat Apr 13 14:18:39 EDT 2002
I'm doing some benchmarks to evaluate whether current Macs
would make suitable nodes for a serial farm (lots of nodes,
preferably fast CPU and dram, but no serious interconnect.)
I've tried a variety of real codes and benchmarks, but can't
seem to get something like a Mac G4/800 with PC133 to perform
anywhere close to even a P4/1.7/i845/PC133.
I'm using either the gcc 2.95 that comes with OSX or a
recent 3.1 snapshot (which is MUCH better, but still bad).
is it just that the performance Apple brags about is strictly
in-cache, and/or when doing something ah specialized like
single-precision SIMD (altivec/velocity engine)?
I haven't really pushed to track down an account on the very
latest dual G4/1000, but afaikt it's got the same boring PC133.
is anyone using Macs in clusters, and what kind of performance
are you observing?
thanks, mark hahn.
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