[Beowulf] file IO benchmark
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Joachim Worringen joachim at ccrl-nece.deFri Nov 25 01:15:10 PST 2005
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Chris Samuel wrote: > On Friday 25 November 2005 00:49, Joachim Worringen wrote: > >>Well, the problem is that this is single-process, single-file benchmark, >>which is often very different from the I/O that a parallel application >>performs. > > Correct, but IMHO you'll need to get those sorts of baseline figures from > Bonnie++ before going to parallel benchmarks in order to know whether any > problems you may see from the parallel tests are the result of something > unique to parallel access or something more fundamental to the storage > architecture. [...snip...] b_eff_io also performs various tests for single-process I/O, so you get your baseline numbers, too. 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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