Re: [Condor-users] checkpoint on java

[Jaime Frey <jfrey@xxxxxxxxxxx>]

On Jul 31, 2006, at 10:35 AM, a..darrigol wrote:

> I intend to do a pool of windows and unix machines to run java
> programs.
> Is it possible to checkpoint a job on the java universe? If
> not, is it possible to use the standard universe with a java
> program by using condor_compile?
>
> My problem is that the windows machines will be switch off
> every night so if java jobs can't checkpoint they will start
> again everyday from the begining and they will never finish
> the execution...

In theory, you could run java jobs in the standard universe by condor- 
compiling the jvm. The jvm would have to obey all of the restrictions  
of the standard universe, most notably no threads. I don't know if  
anyone's successfully tried it.

> I have another problem concerning condor_vacate and condor_off.
> After condor_off i have this message:
> Sent "Kill-All-Daemons" command to master birch
> but in fact the command kill no daemons.
> It s the same with condor_vacate that never stop the jobs on
> the machine. Can we use condor_vacate with a job that can't be
> chepointed like a vanilla job?

The commands were probably refused because the sender wasn't  
authorized to issue them. Unfortunately, these errors aren't sent  
back to the condor_off/vacate command from the daemon. If you look in  
the daemon's log, you should see a line saying that the command was  
denied.

+--------------------------------+-----------------------------------+
|           Jaime Frey           | I used to be a heavy gambler.     |
|       jfrey@xxxxxxxxxxx        | But now I just make mental bets.  |
| http://www.cs.wisc.edu/~jfrey/ | That's how I lost my mind.        |
+--------------------------------+-----------------------------------+