[Beowulf] What kind of I/O benchmark ?

Joe Landman landman at scalableinformatics.com
Wed Mar 23 10:30:46 EST 2005



Velu Erwan wrote:

> Does other people are working on such kind of application oriented
> benchmark ?

yes.

> 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.

Joe

> 
> 
> _______________________________________________
> Beowulf mailing list, Beowulf at beowulf.org
> To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf

-- 
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
email: landman at scalableinformatics.com
web  : http://www.scalableinformatics.com
phone: +1 734 786 8423
fax  : +1 734 786 8452
cell : +1 734 612 4615
_______________________________________________
Beowulf mailing list, Beowulf at beowulf.org
To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf



More information about the Beowulf mailing list