[Beowulf] NFS share - IO rate

[Joshua Baker-LePain]

On Tue, 20 Apr 2010 at 9:36pm, Henning Fehrmann wrote

> These extreme case illustrate the difficulty to interpret the results 
> reliably. It would make more sense to have a tool at hand which starts a 
> test on many clients simultaneously and do a count of the IO operation 
> within a particular time interval. The simultaneity is not a problem 
> here - this can be achieved by scripts. These results can be safely 
> added together to obtain a overall IO-rate.
>
> Do you know such a tool or are there other ways to get a picture of a IO 
> capability of cache-file server?

Have a look at IOR, which uses MPI to coordinate the clients.

http://sourceforge.net/projects/ior-sio/

-- 
Joshua Baker-LePain
QB3 Shared Cluster Sysadmin
UCSF