[kepler-users] wrapping up, never ending workflow!

[Josep Maria Campanera Alsina]

Dear all,
I've found out that the error comes from the fact of using a PN
director as an opaque director inside a worflow managed by another PN
director! Somehow this problem is related to "Director compatibility"
issue.

So I've decided to simplify the workflow and use a model workflow just
in order someone can find a trick to run it succesfully. The main idea
is ¿How can we can continue the execution of a workflow after the
execution of an opaque composite actors with PN director inside when
the overall director is an PN one?

In the attached example (exampleCompositeActors.xml), I cannot get a
"Execution finished" but the Kepler shows the "wrapping up" signal or
alternatively a permament "executing" signal although apparently
nothing is running (only finished partly). No error message is
displayed!

Which worflow design I should adopt? What Am I doing wrong? How Can I
pursue my aim to execute PN composite actors sequentially?

All help appreciated!

Josep Maria Campanera,

PS1: I use Kepler Release 1.0.0 (May 2008) under Linux
PS2: Thanks Edward for your comments,

2009/1/14 Edward A. Lee <eal at eecs.berkeley.edu>:
>
> This is not a situation where it is refusing to terminate because of
> unconsumed tokens. Typically, this is called by a deadlock. If you
> are running on a Windows machine from the command line, you can get
> a stack trace of all the executing threads by typing control-break.
> If you forward that to this list, we can (maybe) identify
> the culprit...
>
> Edward
>
>
> Josep Maria Campanera Alsina wrote:
>>
>> Dear all,
>> I get a "wrapping up" message from an execution of a workflow that
>> coordinates the submission of computational chemistry jobs in a
>> cluster queue system. The workflow is based on the
>> TestJobFullCycle-SGE.xml provided by kepler itself, with some
>> variations. Find attached the mentioned workflows.
>>
>> My workflow is a composite one. I'd like to execute sequentially
>> several tasks: 1st) submit jobs to a cluster, 2nd) collect all outputs
>> and save them locally and then 3rd) convert output files to other
>> formats. Since some tasks are designed for PN director and some for
>> SDF director the overall director is a PN director.
>>
>> However, the task under the PN director (in charge of job submission)
>> never finishes tough the task is already completed and early shows the
>> message "wrapping up", so the execution never finish step 1st and 2nd
>> so the 3rd is never executed. Why PN director doesn't finish the task?
>> How Can I stop the director and allow the workflow to continue?
>>
>> I think the problem is related to the PN director that as said in the
>> user manual "may refuse to automatically terminate because tokens are
>> always generated and available to downstream actors"! Here it comments
>> that "One can correct the problem by changing the firingCountLimit
>> parameter of the Constant actor to some finite value". If done that
>> but it continues with the same problem.
>>
>> How can I overcome this? all comment will be appreciated!
>>
>> Thanks in advance,
>>
>> Josep Maria,
>>
>> ---------------------------------------------
>> Josep Maria Campanera Alsina
>> Professor Lector
>> Departament de Fisicoquímica
>> Facultat de Farmàcia
>> Universitat de Barcelona
>> Avgda Joan XXIII, s/n
>> 08028 Barcelona · Catalonia · Spain
>> Tel: +34 93 4035985
>> Fax: +34 93 4035987
>> campanera at ub.edu
>> --------------------------------------------
>>
>>
>> ------------------------------------------------------------------------
>>
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>> Kepler-users mailing list
>> Kepler-users at kepler-project.org
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>
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