Hi,

Am 13.06.2012 um 22:27 schrieb Gowtham:

> I have been reading about the halftime parameter
> in scheduler configuration (qconf -ssconf) and
> I understand that the value of this parameter
> decides "how fast the grid engine system forgets
> the information about user's consumption of
> resources".
> 
> Also, I understand that that smaller value of
> halftime implies that the system quickly forgets
> user's consumption and as such, reduces the impact
> of such (over/under) consumption.
> 
> I have the following questions:
> 
>  1. From 'qconf -ssconf', I see that halflife
>     has a value of 168 - is this in hours, days?

please have a look at `man sched_conf`.

>     If hours (or days), does this begin at a certain
>     time every week/month/year or is this a rolling
>     value (meaning, past 168 units of time)?
> 
>  2. If I have a 'public usage cluster' and want
>     to make sure my users get a fair share of
>     resources (no one is more special than anyone,
>     since none of them shared the $$ of building
>     this cluster) over a period 1 year, what should
>     be a practical value of halflife parameter?

One year is long. I would start with one or two months.


>  3. In spite of this being a 'public usage cluster',
>     suppose that I want to reward users who consistently
>     use the facility for (meaningful) computations,
>     compared to those who use it when they feel like it.
> 
>     For e.g., Tom and Harry both use it for the exact
>     same duration in the month of June;
>     then Tom goes away to lala land for vacation in
>     July while Harry continues to use the system at
>     the same consistent rate;
>     When Tom and Harry both submit a bunch of jobs in
>     August, I'd like Harry's jobs to have higher priority
>     than Tom's.

Same man page: "compensation_factor".

-- Reuti


>     What changes do I need to make to make this scenario
>     happen?
> 
> 
> It'd be great if you could please point me to some resources
> that I can use to learn these things. Thank you for your
> time and help.
> 
> Best,
> g
> 
> --
> Gowtham
> Information Technology Services
> Michigan Technological University
> 
> (906) 487/3593
> http://www.it.mtu.edu/
> 
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