[jsdl-wg] POSIXApplication Limits

[A.S.McGough]

Sorry for the late delay - I've been on holiday and only now starting to 
catch up.

To add to Donal's fine response. If you do come up with a good set of 
custom extensions for some resource managers please let us know and we 
can see about making them into normative extensions.

steve..


Donal K. Fellows wrote:
> Peter G. Lane wrote:
>> Just to make sure I'm understanding your point completely, neither 
>> JSDL nor any of it's normative extensions provide a way, not 
>> including custom extensions, to specify resource limits for jobs 
>> submitted to resource managers (i.e. PBS, LSF, Condor, ...). The 
>> POSIXApplication limits should be used only by applications that are 
>> able to directly set the ulimit values before executing a process. Is 
>> this is a valid statement?
>
> To be exact, we expect people to specify (in the jsdl:Resources section)
> what resources their job needs to execute successfully (if they specify
> too little, that's too bad) and for the resource manager to use that
> information to compute how many resources to allocate to the job. It is
> also up to the resource manager to choose how to implement said
> allocation; JSDL does not mandate any particular mechanism. If the
> mechanism chosen includes the use of POSIX limits, it is obviously
> incumbent upon the implementation to set the limits such that the
> requirements within the POSIXApplication section are also met; I would
> not expect any implementation to allow the Limits to be used to gain any
> extra allocation of resources above and beyond what was asked for in the
> Resources section.
>
> One way of doing this might be for the resource manager to first set up
> hard limits and then to use the various PA/*Limits to refine those with
> extra soft limits.
>
> Donal.
>
>