Re: [Brahms-dev-l] RCAS status

Hi

This has been the policy of having general queues running on our clusters for quite a while.
Unless the jobs are special this in general has a very small impact, since they are niced; our condor jobs have priority.
Thus give me specific information on what machines seems to be slow, so one can look at the
performance. One easy way is to do a top
- check for io/wait. If this is large (>20% there is a potential problem)
 - CTRL M ->order jobs by memory usage. There may be very large jobs doint little.

if any of these conditions are fullfield there may be a problem. If not it is perception, not a real impact (95% confidence level)

/fv


--------------------------------------------
Flemming Videbaek
Physics Department 
Bldg 510-D
Brookhaven National Laboratory
Upton, NY11973

phone: 631-344-4106
cell:       631-681-1596
fax:        631-344-1334
e-mail: videbaek @ bnl gov
----- Original Message ----- 
From: "Hongyan Yang" <hongyan_at_ift.uib.no>
To: "devlist" <brahms-dev-l_at_lists.bnl.gov>
Sent: Thursday, February 01, 2007 1:31 PM
Subject: [Brahms-dev-l] RCAS status


> Dear all,
> 
>   I am wondering if any of you've noticed that almost all of our RCAS 
> machines are busy with some condor jobs (not from BRAHMS) - which 
> affected the speed of a terminal to complete any local session. This has 
> been for quite a while - is there any restriction for people from other 
> collaboration to use our cluster?
> 
> Hope this can be solved (or at least compromised), to make sure at least 
> we have enough machines to do our jobs.
> 
> Best regards,
>  Hongyan
> 
> -- 
> Hongyan YANG
> Department of Physics and Technology  Phone:  +47 55 58 27 25 (Office)
> University of Bergen
> Allegt. 55, 5007 Bergen       Fax  :  +47 55 58 94 40
> Norway           Email:  hongyan[at]ift.uib.no
> 
> 
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