Re: [Condor-users] New to Condor, Need to RUN MPI

[Samir Khanal <skhanal@xxxxxxxx>]

Hi Zach
Thanks for that hint.
That solved the problem and the slots are showing up, I guess it takes some time for everything to show up in the condor_status.
I have few more comments and want your suggestion.

- I am setting the frontend as the submit machine and want it to take part in computation.
What daemons should I turn on this frontend?
- I want the compute machines be able to run MPI jobs(not to submit jobs) what daemons should run here?
- Do you have a working example of condor_config.local that allows to run MPI jobs? Will you be able to share that with me (skhanal@xxxxxxxx) 
- I want to execute a simple MPI program and see if the configurations are correct.

Thanks again for the tip
Samir


-----Original Message-----
From: condor-users-bounces@xxxxxxxxxxx [mailto:condor-users-bounces@xxxxxxxxxxx] On Behalf Of Zachary Miller
Sent: Tuesday, February 03, 2009 7:03 PM
To: Condor-Users Mail List
Subject: Re: [Condor-users] New to Condor, Need to RUN MPI

> I looked up the CollectorLog and found the following entries. Those ips are of the computenodes
> 
> 2/3 17:28:27 DaemonCore: PERMISSION DENIED to unknown user from host <10.1.255.251:59011> for command 0 (UPDATE_STARTD_AD), access level ADVERTISE_STARTD

this is the key problem.

you need to tell condor which IP addresses are allowed to do certain
operations.  look in the condor_config file for the string "HOSTALLOW"
and set them to something like this:

HOSTALLOW_READ = 10.1.*
HOSTALLOW_WRITE = 10.1.*
HOSTALLOW_ADMINISTRATOR = $(CONDOR_HOST)

this will allow machines in those networks to join your pool, run and/or submit
jobs depending on which daemons they are running.

it also makes it so only the central manager can issue administrative commands.
you may wish to make the central manager a different machine from your main
submit point if you do not trust users on the submit machine not to say, turn
off condor.

i hope that helps!


cheers,
-zach

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