List Archive: gentoo-amd64
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* On Tue Jul-26-2005 at 09:50:00 AM -0700, Duncan said:
> Of course, that's just supposition, here. If those with the 1100/2200
> rates would confirm whether they are running in dual-channel memory mode,
> as I suspect, and you confirm that you are running single-channel mode, as
> I am, it'll pretty much confirm that supposition, however.
2x Opteron 246 (2GHz)
2x 512M, on processor #0 (dual channel)
% ./a.out 2000 5000 1048576
Memory to memory copy rate = 1367.611206 MBytes / sec. Block size = 1048576.
% ./a.out 4000 5000 1048576
Memory to memory copy rate = 2822.960693 MBytes / sec. Block size = 1048576.
Since only 1 processor is used in this test I'm not sure which processor
speed I should use, and hence which result is accurate. In any case they
take the same amount of time, ~3.7s.