[Beowulf] file IO benchmark
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Joachim Worringen joachim at ccrl-nece.deTue Dec 13 01:47:56 PST 2005
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Iozone wrote: > 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 -- 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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