[kepler-users] Blocks to be called just once with SDF

[Christopher Brooks]

Hi Oliviero,

See also
http://mercury.nceas.ucsb.edu/kepler/pipermail/kepler-dev/2010-April/017877.html
which suggests using sources that extend LimitedFiringCount and other ways
to stop.

Edward's suggestion about using a modal model is the best solution though.

_Christopher

On 7/8/10 6:51 AM, Edward A. Lee wrote:
>
> You could use a Modal Model.
> See:
>
> http://www.eecs.berkeley.edu/Pubs/TechRpts/2009/EECS-2009-151.html
>
> Edward
>
>
> On 7/8/10 5:03 AM, BARANA Oliviero 208302 wrote:
>> Dear all,
>>
>> I'm rather new in the use of Kepler and I'm not so expert about actors,
>> directors and so on.
>>
>> I have the following problem.
>>
>> I have a workflow (with a feedback loop inside) which is being executed
>> a certain number of times depending on the value of a certain variable.
>> When this variable is higher than a predetermined value, the Stop block
>> is called and the workflow ends.
>>
>> I would like to execute a few blocks during the initialization phase,
>> just once, before the execution of my workflow, but I can't. The problem
>> is that these initalizing blocks are called each cycle and not once and,
>> since they are very demanding from a computing-time point of view
>> (access to a database to load signals), the overall execution is slowed
>> a lot.
>>
>> Is anyone aware of a method to have a few blocks called just once,
>> keeping in mind that I am using the SDF director (I put 0 in the
>> Iterations field since, as I said, the overall execution is stopped by
>> the Stop block)?
>>
>> Many thanks in advance for your help
>>
>> Oliviero
>>
>>
>>
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>
>
>
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-- 
Christopher Brooks, PMP                       University of California
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