[Beowulf] file IO benchmark
joachim at ccrl-nece.de
Tue Dec 13 04:47:56 EST 2005
> Joachim wrote:
> >I/O is a complex topic, and a single number rarely tells you enough if you want
> >to analyze what's going on. For this purpose, IOzone is very powerful. But
> >again, it does only run on a single node (although can fork processes/threads to
> >perform concurrent operations). You could start it on multiple nodes, but then
> >the I/O is not synchronized, which may or may not what you want to do.
> Iozone is able to run across multiple nodes. See the -+m and -t options.
Great, I didn't know this yet. Well, it's a complex tool...
Joachim Worringen - NEC C&C research lab St.Augustin
fon +49-2241-9252.20 - fax .99 - http://www.ccrl-nece.de
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