Parallel Chunk Loops

I am using parallel chunk loops for the parallelisation of our workflows. The workflow terminates with

Execute failed: IURIPortObject with multiple URIs supplied at single URI port #0

What does it mean? How can I fix this?

Hi Lars,

I guess this is not possible with the generic knime nodes.

Best, Iris

Hi all,

yes. Since the first node in your loop expects only one file, the table going into URI to Port needs to have a single row. I assume that your chunks are not of size 1 then.
Either force them to size 1 or loop inside the parallel loop again.


“Add Chuink Index to RowID” in Parallel Chunk End needs to be checked.

Solves the problem. Thanks.

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