Re: [Condor-users] dSlots and RANK expression (dynamic slot)

[Todd Tannenbaum <tannenba@xxxxxxxxxxx>]

On 9/20/2012 8:26 AM, Slimane Amar wrote:
> Hi,
>
> We have setup a pool of 2 machines : M1(8 cpus) and M2(24 cpus)
> with a single partitionable slot :
>
> MAX_SLOT_TYPES = 1
> SLOT_TYPE_1 = 100%
> NUM_SLOTS_TYPE_1 = 1
> SLOT_TYPE_1_PARTITIONABLE = TRUE
>
> We want to give a preference to the machine that has the most cpu (M2).
> The submit file is :
> rank = Cpus
> #rank = DetectedCpus
> request_cpus = 4
>
> We want alls jobs run with 4 cpus on M2 first and then
> if there is no cpu on M2 run on M1.
> But with the above configuration, the jobs run on M1 even if there are
> cpus on M2.
> What's wrong ?
>
> thanks in advance.

Hi Amar -

You can achieve the above policy using static slots, but I am not sure 
you can currently fully achieve the above policy using partitionable 
slots.  So my guess is if you have one job submitted, it will always 
start on M2, but if you have more than one job, you end up with jobs 
running on both M1 and M2, right?

This is something we can think about how to improve in the developer 
series - partitionable slots are still a work in progress in Condor, and 
we are currently thinking about how to tie up some known shortcomings.

regards,
Todd