Comment by tetron

CWL is a declarative/functional language for describing how to execute command line tools (staging input files, mapping arguments, collecting outputs) and how to connect the outputs of one tool to the inputs of the next. It is HPC and cloud agnostic. The same workflow description can run on a laptop or on 1000 cloud compute nodes. Lots of people are already using it to solve their problems, for some examples see https://github.com/search?q=extension%3Acwl+cwlVersion