On Wed, May 20, 2009 at 04:03, Ian Dunlop <[email protected]> wrote:


> reference for any errors that are bubbling up.  This does mean that no
> retry type events can be captured by the provenance unless we start
> introducing multiple provenance layers - maybe we'll leave that one
> for now!

Yeah, as we don't yet expose retry and failover configuration in the
UI this would only be used now by Taverna 1 workflows that had it
specified, and for the few cases where the .t2flow file was manually
edited to include this.

So I agree that we can skip the 'deeper' provenance for now - for most
users they would care more about where their actual results came from
- but for 'correct' provenance we would really need to store the
result of *all* the layers - as in a way each layer makes a decision.
(The "control" part of the workflow).

Luckily the default dispatch stack layers are not black boxes - but
there could be third party or extension dispatch stack layers. (Like
the loop layer)


-- 
Stian Soiland-Reyes, myGrid team
School of Computer Science
The University of Manchester

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