The importance of fast post-processing is increasing. Three major factors are playing a significant role.

(I) The more and more widening gap in the development of storage versus computing,

(II) the increase in resolution, and

(III) the wider use of ensembles of significant size.

Several possibilities are available to alleviate this problems. Online post-processing and usage of streaming and incorporated post-processing steps (DAG based processing) are the most prominent attempts to improve throught-put. The development of modular tools and associated requirements will be discussed.


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