Hi @<1523701083040387072:profile|UnevenDolphin73> ! Steps can be cached using the cache=True arg, so when a new step is added, the other steps will not be ran (only their outputs will be fetched). If a step is modified, then clearml will recognise that and not use the cached result. Of course, the whole pipeline will have to be reran, but the execution should be quick for the cached steps.
The pipeline can't be modified while it is running.
Does this help your case?