Figure 6

System workflow architecture. Individual algorithms and testing procedures are integrated into a workflow that directs and automates their interactions. Storage stages are interleaved with transformation stages, which are either algorithmic (marked as arrow-shaped triangles, they explicitly advance the resolution of the problem associated to their input) or restrictive (marked with a diamond shape, these tests refine algorithmic inputs diverting simple flows through feedback loops to previous storage stages). Note many transformation stages are actually concurrent scatter-gather processes (e.g., gene alignments, bootstrap replicates, etc.).