[Brahms-dev-l] Re: submitting condor jobs

Johnson, Erik B wrote:

>Hiro,
>  Is there any way one can submit a condor job such that it will first try the crs queues and if they are full then try the cas queues?
>
>
>  
>
Answer,  No.


>Also, is there a reason why we can't nsf mount the storage disks on the rcas machines?  The major reason I don't use this space is that condor would have to be able to see the computer I want to save my data on.  
>
>  
>
What is storage disks?  Are you talking about /home disks in each 
machine?  If so, there is a way to use them by ROOT deamon.
For example, you make  (or copy, move) file to 
(/home/hito/scratch/treeDst10660.root) in rcas0050.  Suppose, you want 
to access this file from other rcas machines by

TFile 
*file=TFile::Open("rootk://rcas0050.rcf.bnl.gov//home/hito/scratch/treeDst10660.root");

or using with Proof
TDSet *set=new TDSset("TTree","T1");
set->Add("rootk://rcas0050.rcf.bnl.gov//home/hito/scratch/treeDst10660.root");

These things works since I tested them.  (Pay attention to two /  (//) 
in file location.  Since the default file location by ROOT daemon is 
your $HOME directory (which would be /brahms/u/username), if you don't 
put //, the ROOT daemon can not find your file.)


Now, if you want to use Condor with this ROOT or PROOF daemon, this does 
not work currently since Condor does not pass Kerberos tokens to a 
submitted job.  There is a work-around, and we might try it after QM.

Hiro

>Erik
>
>  
>


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