Re: [Condor-users] multiple VM problem

[Dan Bradley <dan@xxxxxxxxxxxx>]

Nagaraj,

Off the top of my head, I can't think of any reason for this change in  
behavior.  When you say "user process" you are referring to a job run  
by Condor on behalf of a user, right?  You are not talking about  
processes run by users outside of Condor.  Just want to be sure I  
understand.

You could try adding D_LOAD in your STARTD_DEBUG settings.  This will  
show extra information about what's going on while monitoring system  
load.

--Dan

On May 8, 2006, at 12:46 PM, P. Nagaraj wrote:

> Hi,
>
> We have dual cpu nodes in our condor pool. Some of these run an older
> version of Linux (RH 7.1), and these take two user jobs as shown below
> There is a user process on each cpu here. CondorVersion is 6.6.5 and
> platforms are all Intel/Linux
>
> vm1 Claimed/Busy/LoadAv=1.000/Mem=502
> vm2 Claimed/Busy/loadAv=1.020/Mem=502
>
> When I upgrade the nodes (Scientific Linux 3), the behaviour changes,
> condor_config being unchanged. The VM that is running the user process
> shows up as vm2 below, while the vm that has no LoadAv shows up as  
> Busy.
>
> vm1  Claimed/Busy/LoadAv=0.000/Mem=500
> vm2  Owner/Idle/LoadAv=1.000/Mem=500
>
> Refering to the vm1 just above, its classads are as show here below.
>
> CpuBusy = ((LoadAvg - CondorLoadAvg) >= 0.500000)
> CondorLoadAvg = 0.000000
> LoadAvg = 0.000000
> TotalLoadAvg = 1.000000     --this from the other vm which has LoadAv=1
> TotalCondorLoadAvg = 0.000000
> CpuBusyTime = 0
> CpuIsBusy = FALSE
> State = "Claimed"
> Activity = "Busy"
> Start = (((LoadAvg - CondorLoadAvg) <= 0.300000) || (State !=  
> "Unclaimed"
> && State != "Owner"))
> Requirements = START
>
> Why is there this mismatch - CpuisBusy="FALSE" and Activity=Busy?
> The Loadaverages indicate that a procss can start, but something makes  
> the
> Activity="Busy". How do I find out why one vm is always Busy, which was
> now so before the OS upgrade?
>
> Similarly, if HT is enabled in BIOS, there are 4 vm's on a node. Two of
> these are Claimed/Busy (Loadav=0) and the other two are Owner/Idle  
> (doing
> user process, LoadAv=1).
>
> Thanks in advance for any help on this
>
> Nagaraj
>
>
> --  
>
> +---------------------------------- 
> +--------------------------------------+
> Nagaraj Panyam                     | Office tel: +91-22-22782610
> Dept of High Energy Physics        | Office fax: +91-22-22804610
> Tata Instt. of Fundamental Research| Home  tel : +91-22-22804936
> Mumbai - 400 005, INDIA            | **Email** : pn@xxxxxxxxxxx
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