I have occasionally noticed Marshall writing something about parallel steps - maybe you can find something in the mailing list archives of the developers or commits lists... e.g.
http://uima.markmail.org/thread/y3go5sswfvb7qkmz http://uima.markmail.org/thread/qbrwrahcs4uwhmj5 -- Richard [1] http://uima.apache.org/mail-lists.html (try Markmail) On 13.05.2014, at 03:16, Petr Baudis <pa...@ucw.cz> wrote: > Hi! > > In my UIMA pipeline, at a few points I have a need for > some AEs to be executed logically in parallel - in particular, > I'd need this in case of a few CAS multipliers. If I understand > things correctly, there is no way with the fixed flow controller > to execute two CAS multipliers "in parallel", i.e. both using > a single source CAS, dropping it and producing a bunch of new > CASes. I need to create a CAS processing graph like: > > .-> Multip0 -> A1 -> Multip1 -> A2 ->. > reader -> A0 < > CASmerger > `-> Multip2 -> A3 ------------> A2 ->' > > My current aim would be enclosing each of the branches (up to A2) > in an aggregate AE, and creating another aggregate AE that will > consist of these two branch AEs, governed by a custom "parallel" > flow controller that will ensure the input CAS is fed as input > to both branches and the union of output CAS of both branches > is sent out of the aggregate AE: > > Main: reader -> A0 -> AggregP -> A2 -> CASmerger > AggregP: Aggreg0, Aggreg1 (ParallelFlowController) > Aggreg0: Multip0 -> A1 -> Multip1 > Aggreg1: Multip2 -> A3 > > I'd just like to confirm whether noone implemented the parallel > flow controller yet and if perhaps I'm not missing a simple existing > solution to this problem. > > Kind regards, > > Petr "Pasky" Baudis >
