[Darshan-users] Darshan installation question

[Phil Carns]

On 05/18/2011 12:46 PM, ketan wrote:
>
>>    this is the environment variable the scheduler stores the jobid 
>> in. What system are you testing on? if it's just you're own machine. 
>> You can put anything there you want. At runtime, if the variable is 
>> unset, Darshan will use the process id instead.
>>
> What should this environment variable point to? A file? folder? I am 
> installing on one of the ci machines. It is a 64bit linux.

I would recommend just using --with-jobid-env=NONE.  That's what I use 
when testing on my workstation.  Darshan will just use the rank 0 pid in 
place of the environment variable.

To answer your question more precisely, if you were using the 
environment variable, then it should be an environment variable that 
gets filled in by a job scheduler like cobalt or torque.  You don't have 
to install a job scheduler to use Darshan by any means, but if you are 
using a job scheduler then Darshan can use that environment variable to 
label its log files so that it is easy to correlate darshan logs with 
specific jobs that were executed by the scheduler.

-Phil