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From Eddie Epstein <eaepst...@gmail.com>
Subject Re: UIMA CPE appears not to utilise more than a single thread
Date Mon, 13 Apr 2015 16:07:58 GMT
The CPE runs pipeline threads in parallel, not necessarily CAS processors.
In a CPE descriptor, generally all non-CasConsumer components make up the

Change the following line to indicate how many pipeline threads to run, and
make sure the casPoolSize is number of threads +2.

<casProcessors casPoolSize="2" processingUnitThreadCount="1">


On Mon, Apr 13, 2015 at 7:44 AM, Mario Gazzo <mario.gazzo@gmail.com> wrote:

> It appears that I can only utilise a single CAS processor even if I
> specify many more. I am not sure what I am doing wrong but I think I must
> be missing something important in my configuration.
> We only need multithreading and not the distributed features of UIMA CPE
> or similar. I copied and modified the UIMA FIT CpePipeline and CpeBuilder
> to do this and I only altered thread counts and error handling since I want
> the CAS just to be dropped on exceptions. I have verified that the accurate
> number of CAS processors are created using the debugger and I can in
> JConsole see that an equivalent amount of active threads are created but
> only one thread seems to be fed from my simple custom collection reader,
> which in the simple test setup only reads input entries from a file. I can
> see this because I log the thread id inside the AEs, which is always the
> same. I have also verified that the CAS pool size equals the number of
> processors + 2.
> Is there some additional collection reader configuration required to feed
> all the other CAS processors?

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