Bottleneck for scattered subworkflows

Question

[ionox0]

Hi I have a question regarding when steps are able to run in parallel. We noticed that sometimes all of the jobs from a scatter must complete before moving to the next

I was wondering whether a scattered subworkflow can start before all the inputs to that step are available, or does a subworkflow have to wait for all of the previous inputs to be available regardless of whether they are available for just the first set of scattered inputs?

Answer 1

[Carlos Borroto]

All inputs for the step have to be available. See this, look for bullet point "Instead of scattering separate steps, prefer to scatter over a subworkflow."