Re: [Condor-users] GCB Performance

["Sonny (Sechang) Son" <sschang@xxxxxxxxxxx>]

Let me add more questions to what Junaid asked:

1. If things happened normally, there must have been 3 rounds of 
"matching and execution" with 20 VMs but 2 rounds with 40 VMs. Is this 
what you saw? If you have the same or similar length of critical path in 
the pipeline for some reason such as match failure and serialized 
database access, you will get the same completion time.
2. Does each job run for roughly the same period both with 20 and 40 VMs?

You may also want to give us user logs for both cases (20VMs and 40VMs).

Thank you.

Junaid N. Sahibzada wrote:
> thats strange.
>
> please provide more information on what sort of jobs did u submit both 
> times?
>
> were the jobs identical or different?
>
> also specify if the execute machines were the same in both the experiments.
>
> */Chris Miles <chrismiles@xxxxxxxxxxxxxxxx>/* wrote:
>
>     I ran an experiment today.
>      
>     50 jobs submitted to a 20 machine condor pool over GCB.
>      
>     Job completion times were roughly the same (10 seconds deviati! on)
>     when submitting to
>     the pool with 10 machines (20vms) then when submitting to 20
>     machines (40vms).
>      
>     Surely this cant be normal behaivour?
>      
>     Chris
>     University of Paisley, Scotland
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> *Junaid N. Sahibzada*
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