In comp.arch John S. Dyson <email@example.com> wrote:
> Imagine a P6-XXX running with a chipset that doesn't stunt it's
> performance. The darned Natoma has only about 70MBytes/sec write
> perf (but pretty good read perf.) The Orion is faster than the
> Natoma only with 4-way interleave. Sure wish that Intel would
> produce chipsets that were good enough for the processors.
On my dell p6-200 with natoma chipset:
Function Rate (MB/s) RMS time Min time Max time
Copy: 102.4000 0.2560 0.2500 0.2600
Scale: 102.4000 0.2550 0.2500 0.2600
Add: 112.9412 0.3440 0.3400 0.3500
Triad: 112.9412 0.3490 0.3400 0.3500
Memory bandwidth seems reasonable.
This was on a 36.6 Mb array btw (definitely not in cache).
The box was running gcc-2.7.2 and linux
-- Bill Broadley Bill@math.ucdavis.edu UCD Math Sys-Admin Linux is great. http://math.ucdavis.edu/~bill PGP-ok
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