[Beowulf] What kind of I/O benchmark ?
landman at scalableinformatics.com
Wed Mar 23 07:30:46 PST 2005
Velu Erwan wrote:
> Does other people are working on such kind of application oriented
> benchmark ?
> I was heard that some BLAST code could be used for such use, does some
> of you follow this way of validating/benchmarking clusters ?
Yes it can. You will be throttled by the speed of mmap implementation
if you are using NCBI BLAST, and you will spend most of the time paging
if you don't segment your databases (nt in particular). But you could
use BLAST to benchmark the IO. Not sure how useful it is though for
what you want to measure.
What specifically are you trying to measure (in the context of which
applications are you going to run)? If you do large block sequential
IO's you will want a very different benchmark test from small block
random IOs and seeks.
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