What happens during pipeline execution?
Execution of a pipeline begins with precompilation. During this step, VIBE checks all input and output connections for validity, verifies that necessary parameters for each module have been assigned, and checks to see that input data has been supplied. Once the pipeline passes precompilation, each module is processed in turn. Note that parallel branches in a workflow will be executed in parallel. During execution, the border of the module will fade from green to white and back to green, and the cube in the upper right-hand corner of the window will spin. As a module finishes its execution successfully (indicated by a solid-green border), its results are placed into the local cache. This cache is emptied periodically as specified by the configuration file, so results worth keeping should be saved individually or the entire pipeline should be archived. Modules that do not complete successfully will receive a red border. Any error information generated by the module or its algorithm will
