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This PR improves the error handling around pipeline execution, distinguishing PP execution failures from pipeline failures and ignoring the latter for preprocessing pipelines.

These exceptions let us distinguish failures in loading or managing
pipelines from failures in task execution.
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Looks good, one minor question. Devising a good exception hierarchy is hard, if anything needs to be improved in that regard in daf_butler or ctrl_mpexec, let us know.

It may be possible to run main pipelines even if preprocessing fails or
cannot be attempted; defer that decision to quantum graph generation.
@kfindeisen kfindeisen merged commit 7ace24a into main Nov 19, 2024
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@kfindeisen kfindeisen deleted the tickets/DM-47591 branch November 19, 2024 18:40
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3 participants