[Swift-devel] IO overheads of swift wrapper scripts on BlueGene/P

[Allan Espinosa]

right. its from /intrepid-fs0/users/espinosa/scratch to
/intrepid-fs0/users/espinosa/persistent

I am sure the two are just a single mount point.

-allan

2009/10/19 Mihael Hategan <hategan at mcs.anl.gov>:
> On Mon, 2009-10-19 at 10:25 -0500, Ioan Raicu wrote:
>> OK, I see now. The move in theory should be light weight, right? As
>> its just metadata that is changing (e.g. moving on the same
>> filesystem, not copying), right? Or is the job dir really in the
>> compute node RAM, and the move is actually doing a copy from CN RAM to
>> GPFS?
>
> In Allan's case, I believe it's scratch -> gpfs.
>
> It's still troubling to see 3 small files taking 3 minutes to be copied.
>
>
>
>



-- 
Allan M. Espinosa <http://allan.88-mph.net/blog>
PhD student, Computer Science
University of Chicago <http://people.cs.uchicago.edu/~aespinosa>