[jsdl-wg] Activity Instance schema

[Alexander Papaspyrou]

Hi,

here comes the written info for the scheduling use case:

--8<-- snip --8<--
A client sends a request to a scheduler (could be EMS in OGSA speak)
using an activity template which describes the requirements of the
submitted work unit.

The initially receiving (primary) scheduler takes the template and, if
it is willing to handle it, creates an activity instance for it,
storing the initial template and, if applicable, additional
information. The latter should at least include a "provenance record"
which denotes that
the current scheduler has taken over responsibility for the execution
of the given activity. Other candidate information may include
scheduling attributes, dependencies to other activities, and the
current state of the activity, possibly reusing the BES state model.

On activity delegation, the delegator acts like a client towards the
potential delegatee, offering the job to another scheduler. Again, if
the delegatee is willing to accept the job, it takes over
responsibility and the provenance records and depending information
(e.g. the expected BES) are updated. If necessary, the activity
template may be modified, as long as the manipulation history is kept.

Throughout the whole process, state information is constantly updated
in the activity record. After activity completion, the resource
consumption is written to the activity record. The corresponding
entries and dependent parts of the record could then be sealed (marked
final) as to denote the completion of the activity.
-->8-- snap -->8--

Spanking welcome...

Regards,
Alexander


2008/4/9, Philipp Wieder <philipp.wieder at udo.edu>:
> Hi,
>
>  please find a sketch of the scheduling use case here
>  https://forge.gridforum.org/sf/go/doc15178?nav=1. We will try to provide
>  more written info in time before the call.

-- 
Dipl.-Inform. Alexander Papaspyrou
http://ds.e-technik.uni-dortmund.de/~alexp

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