[Beowulf] file IO benchmark

Joachim Worringen joachim at ccrl-nece.de
Fri Nov 25 04:15:10 EST 2005


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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