In message from Tom Elken <tom.el...@qlogic.com> (Fri, 14 Aug 2009
13:57:53 -0700):
On Behalf Of Bill Broadley
I put DDR3-1333 in the machine, but the bios seems to want to run
them
at
1066,
How many dimms per memory channel do you have?
My understanding (which may be a few months old) is that if you have
more than one dimm per memory channel, DDR3-1333 dimms will run at
1066 speed;
i.e. on your 1-CPU system, if you have 6 dimms, you have 2 per memory
channel.
I'm not sure exactly what speed they are running at.
Your results look excellent, so I wouldn't be surprised if they are
running at 1333.
I have 12-18 GB/s on 4 threads of stream/ifort w/DDR3-1066 on dual
E5520 server. But it works under "numa-bad" kernel w/o control of
numa-efficient allocation.
Mikhail
-Tom
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