Parallel pipelines for Python
PaPy, which stands for parallel pipelines in Python, is a highly flexible framework that addresses the problem of creating scalable workflows to process or generate data. A workflow is created from Python functions(nodes) with well-defined call/return semantics, connected by pipes(edges) into a directed acyclic graph. Given the topology and input data, these functions are composed into nested higher-order maps, which are transparently and robustly evaluated in parallel on a single computer or remote hosts. The local and remote computational resources can be flexibly pooled and assigned to functional nodes. This allows to easily load-balance a pipeline and optimize the throughput. Data traverses the graph in batches of adjustable size: a trade-off between lazy-evaluation, parallelism and memory consuption. The simplicity and flexibility of distributed workflows using PaPy bridges the gap between desktop and grid.
The easiest way to get PaPy is if you have setuptools installed:
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