uima-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Jens Grivolla <j+...@grivolla.net>
Subject Re: Parallel CAS consumer
Date Wed, 10 Oct 2012 12:56:44 GMT
Hi all,

from what I understand this does not involve CAS multipliers at all, but 
simply a flow where all CAS consumers are done in one "parallel step".

Apparently this can't be done in a CPE so you would need an aggregate of 
all the CAS consumers, and have a parallel flow controller for that 

However, that wouldn't really do any good according to the 
documentation: "ParallelStep, which specifies that multiple Analysis 
Engines should receive the CAS next, and that the relative order in 
which these Analysis Engines execute does not matter. Logically, they 
can run in parallel. The runtime is not obligated to actually execute 
them in parallel, however, and the current implementation will execute 
them serially in an arbitrary order."


On 10/10/2012 12:39 PM, Richard Eckart de Castilho wrote:
> Hi,
> I see. I think this is not possible. To my knowledge CPE (which you probably use) does
not support CAS multipliers. I'm not too familiar with UIMA-AS, are you sure that it supports
such a scenario?
> If you manage to get realize the scenario as you described, it would be great to hear
how you did it.
> Best,
> -- Richard
> Am 10.10.2012 um 12:15 schrieb Timo Boehme <timo.boehme@ontochem.com>
> :
>> Hi,
>> Am 10.10.2012 12:05, schrieb Richard Eckart de Castilho:
>>> the main difference between CAS consumers and analysis engines is
>>> that the former be default run only a single instance and the latter
>>> can be multiplied. If your consumer code can be run in parallel, just
>>> try inheriting from AnalysisEngine_ImplBase (or something like that)
>>> instead.
>> Thanks for your answer. However each single consumer must run as single instance
(e.g. one database consumer, one consumer writing to a file; each of them need to run as single
instance). Thus I would like to have a single instance per consumer but the different consumer
to run in parallel.
>> Kind regards,
>> Timo
>>> Am 10.10.2012 um 12:00 schrieb Timo Boehme <timo.boehme@ontochem.com>
>>> :
>>>> Hi,
>>>> is there any possibility without using UIMA-AS to run different CAS consumer
components of a pipeline in parallel?
>>>> The standard behavior is that the consumer are called in sequence, but since
in my case they don't depend on each other it would be more efficient to have them run in
parallel. Can I use CAS multiplier + Flow control to achieve this?

View raw message