Re: [Condor-users] Dynamic Pool Configuration

[Jyotishman Pathak <jyotishman@xxxxxxxxx>]

Hi Rajesh,

Thank you for your reply and the pointers. It sure helped. However, I
think in a grid infrastructure and assuming that a particular node will
report to many central managers, it is hard to envision *all* the
values for CONDOR_HOST beforehand. In other words, if a node comes
alive, it should be dynamically inducted into a condor pool based on
some heuristics (e.g., locality), as opposed to hardwiring the condor
control manager that it will report to. 

I am not sure if my point makes sense here. Please let me know your views.

Regards,
Jyoti.

On 7/7/05, Rajesh Rajamani <raj@xxxxxxxxxx> wrote:

>
> Imagine I have a condor pool of 50 machines which are monitored/managed
> by some "parent node". Based upon the status of these 50 nodes, the jobs
> are submitted to them.

When you say "monitored/managed", do you mean the Condor system or a
third-party management software?  I'm assuming it is the former.  Check
out
http://www.cs.wisc.edu/condor/manual/v6.7/3_1Introduction.html#SECTION00411000000000000000
for information about the Central Manager

> Now, think of a new node (51st machine) that has been provisioned by
> some resource allocator. This node was not a part of the original condor
> pool. In other words, originally the "parent node" is not aware of this
> new node. My question is -- how do I make the parent node aware of the
> fact that a new machine has arrived (and it needs to be included in the
> pool and can be used for job execution, monitoring etc.) ?

Resources report to the collector, which then works with the negotiator
to schedule jobs.  All you need to do is use the proper value for
CONDOR_HOST in the config file of the new "node".  See
http://12.22.53.199:6080/display/CONDOR/CONDOR_HOST for details.


--
Rajesh Rajamani
Senior Member of Technical Staff
Direct : +1.408.321.9000
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