Re: [gridcpr-wg] GridLab: In scope or out

[Nathan Stone <stone@psc.edu>]

	I vote In Scope.  Although the extension to jobs that run across 
multiple sites is beyond the scope of our problem statement.

	N.

Paul Stodghill wrote:
> In the GridLab project \cite{gridlab-homepage,gridlab-overview}, a job,
> consisting of one or more processes, is running on a grid machine. In
> the middle of the run, the job may be forced to migrate to a different
> machine, possibly with a different architecture and/or number of CPUs.
> The application program may either decide by itself to migrate (e.g.
> poor performance on the current machine) or may be forced to do so,
> either by the user (via an application manager) or by the local resource
> management software that wishes to evict the job. The main purpose of
> GridCPR in GridLab thus is the ability to interrupt and migrate a job
> until it finally terminates. Fault-tolerance is only a secondary aspect.
>  
> An extension of the above use-case is dealing with jobs that run
> concurrently at multiple grid sites.
>  
> Applications save their state to regular files. Checkpoint meta data can
> be stored in GridLab's "advert service", allowing the checkpoint file(s)
> to be found and retrieved after restart. File transport is done via
> GridLab's data movement service (or via GridFTP) \cite{gridlab-day}.
>  
> Key functions:
> \begin{itemize}
> \item Services for checkpoint data transport, via GridLab's data
>   movement service or GridGTP.
> \item Services for checkpoint data management, via Advert Service.
> \end{itemize}
>  
>  
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