parallelise ZipLoop - feature request

[lars20070]

In principle, Parallel Chunk Loop in combination with Port to URI and URI to Port allow the execution of OpenMS/Knime workflows with multiple threads. But the implementation of Parallel Chunk Loop has problems (NullPointerException) and is incomplete (multiport start missing).

IMO, it would be best to implement a parallelised version of ZipLoop which replaces the old one. We will then have the same behaviour as in TOPPAS now.

Below the start of a loop in order to run a multi-threaded workflow in the Knime workflow engine.
IMO, it's bad UX and a major hurdle for adoption.

In comparison, this is what the equivalent workflow in TOPPAS looks like. Parallel execution is entirely managed by the TOPPAS workflow engine in the background.