[GE users] Fair share config, fill-up hosts and max user slots

Reuti reuti at staff.uni-marburg.de
Fri Dec 23 18:34:41 GMT 2005


Hi,

Am 23.12.2005 um 11:39 schrieb Jean-Paul Minet:

> Hi,
>
> Our bi-proc cluster is used for sequential, OpenMP and MPI jobs.   
> We wish to:
>
> 1) use fair-share scheduling with equal shares for all users
>

you mean like in 5.3? Here:

http://gridengine.sunsource.net/servlets/ReadMsg? 
listName=users&msgNo=8319

> I have disabled Priority and Urgency scheduling, and set policy  
> hierarchy to S.:
>
> lemaitre ~ # qconf -ssconf
> algorithm                         default
> ...
> halftime                          336
> usage_weight_list                  
> cpu=0.848000,mem=0.152000,io=0.000000
> ...
> weight_tickets_functional         0
> weight_tickets_share              10000
> ...
> policy_hierarchy                  S
> weight_ticket                     1.000000
> ...
> weight_urgency                    0.000000
> weight_priority                   0.000000
>
> Under the share tree policy, I have only defined a default leaf  
> under which all users appear, but "Actual resource share" and  
> "Targeted resource share" remain 0 for all users, as if actual  
> usage was not taken into account?  This is confirmed by jobs being  
> dispatched more like in FIFO order than following past usage.  
> What's wrong?
>
> 2) limit the total number of CPUs/slots used by any user at any  
> time: MaxJobs/User doesn't help as a single MPI job can use many  
> slots and therefore cannot compare to a sequential job.  How can we  
> implement this?
>
> 3) fill-up hosts with sequential jobs to leave as many empty nodes  
> for OpenMP and MPI jobs.  I have read Stephen G. WebL Log: am I  
> correct in assuming that I have to define a complex_values slots=2  
> for each of the biproc host (we don't want more jobs than CPU) and,  
> thereafter, the scheduler will select the hosts with the least  
> available slots (setting of course queue_sort_method=load and  
> load_formula=slots) ?
>

Correct. - Reuti

> Thanks for any help
>
> Jean-Paul
>
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