[GE users] accounting / fair share 'bypass'?

crhea crhea at mayo.edu
Wed Mar 11 18:00:58 GMT 2009

On Wed, Mar 11, 2009 at 12:41:35PM -0500, mhanby wrote:
> Interesting, I hadn't thought of using Ganglia. We have that installed
> as part of Rocks. Is there a metric that will show you slot usage vs
> total slots over time?

I haven't done anything to try to tie Ganglia into SGE... 

The slot usage vs slots/time is a mess to try to unwind.  Here's why:

Our "basic cluster node" is a 4-CPU Opteron machine with 8GB RAM.
We have it set up as 4 slots (one slot/cpu w/ 2GB memory).
If a user requests more memory for their job (h_vmem=8GB), 
one "slot" will be used, but the others go unused (as all memory is 

In this case, do you have unused slots? Yes. Could you have used them?  No.

You can get at this sort of data with the ARCO add-on, but making
management-friendly gas-gauge reports could take a lifetime.  :)

--- Cris

 Cristopher J. Rhea                     
 Mayo Clinic - Research Computing Facility
 200 First St SW, Rochester, MN 55905
 crhea at Mayo.EDU
 (507) 284-0587


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