[gridengine users] Halftime parameter in scheduler configuration

Gowtham sgowtham at mtu.edu
Wed Jun 13 21:05:14 UTC 2012


Thank you, kind Sir!

Best,
g

--
Gowtham
Information Technology Services
Michigan Technological University

(906) 487/3593
http://www.it.mtu.edu/


On Wed, 13 Jun 2012, Reuti wrote:

| 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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| > users at gridengine.org
| > https://gridengine.org/mailman/listinfo/users
| 
| 



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