[kepler-dev] SampleDelay Actor Query

[Edward A. Lee]

I would use a ModalModel.
See:

http://www.eecs.berkeley.edu/Pubs/TechRpts/2009/EECS-2009-151.html

Edward


On 4/21/10 2:59 PM, subhav mital wrote:
> Hi,
>
> Just wondering if any one has any idea on how to proceed or has
> implemented anything similar? Just a conditional branching execution,
> but in this case, both the conditions get executed despite having
> enforced a condition.
>
> Would be glad to know your thoughts/suggestions.
>
> Thanks.
>
>
> On Tue, Apr 20, 2010 at 7:47 PM, subhav mital <mital.subhav at gmail.com
> <mailto:mital.subhav at gmail.com>> wrote:
>
>     Hi,
>
>     Please find attached my workflow is currently giving some errors
>     which I am unable to ascertain why
>     ?
>
>     I wish to simulate the following:
>
>     Move from Stage 0 to Stage 1. At the end of Stage 1, it must prompt
>     the user with an option to either execute Stage 2 (the next stage)
>     or execute the previous stage (Stage 0) again.
>
>     Is there any way to do this? (Would be glad to know) As of now, both
>     sides of the branches get executed, despite putting the condition
>     for each branch. (i.e input==1 perform xyz else perform abc if
>     input==0).
>
>     I have tried all actors and directors but get some error. Would be
>     glad if someone can help in this and suggest ways to proceed?
>
>
>     Thanks.
>
>
>     On Mon, Apr 5, 2010 at 3:39 AM, Jianwu Wang <jianwu at sdsc.edu
>     <mailto:jianwu at sdsc.edu>> wrote:
>
>         Hi Subhav,
>
>              I'm not familiar with Sample Delay Actor. Maybe some one
>         else can help.
>
>              About yhour workflow pausing until some condition is met.
>         It seems to me that you can use 'Boolean Switch' to do it. Let
>         the false branch be connected to its input, so that the 'Boolean
>         Switch' actor will wait for another condition if the current
>         condition is false. The true branch will be connected to the
>         sub-workflow you want to execute.
>
>              I attached a sample workflow using 'Boolean Switch' and
>         'Interactive Shell' actor. Yet one weird phenomena of its
>         execution is that the output is according to the previous input
>         in 'Interactive Shell', not the current one. I'll keep digging it.
>
>         Best wishes
>
>         Sincerely yours
>
>         Jianwu Wang
>         jianwu at sdsc.edu  <mailto:jianwu at sdsc.edu>
>         http://users.sdsc.edu/~jianwu/
>
>         Scientific Workflow Automation Technologies (SWAT) Laboratory
>         San Diego Supercomputer Center
>         University of California, San Diego
>         San Diego, CA, U.S.A.
>
>
>         On 4/4/2010 5:15 PM, subhav mital wrote:
>>         Alternatively, is there any actor that "pauses" the workflow
>>         until some condition is met?
>>
>>         ie. Similar to a flag value which upon getting reset (0),
>>         halts the workflow and upon getting set (1) resumes the workflow.
>>
>>         Thanks.
>>
>>
>>         On Sun, Apr 4, 2010 at 8:09 PM, subhav mital
>>         <mital.subhav at gmail.com <mailto:mital.subhav at gmail.com>> wrote:
>>
>>             Hi,
>>
>>             I wish to use the Sample Delay Actor but am confused how
>>             is it used to resolve deadlocks? Please let me know if
>>             there is any sample demo of this?
>>
>>             Moreover, the documentation of interactive shell actor
>>             states: "The actor is typically preceded by a SampleDelay
>>             actor, which provides an initial welcome message or
>>             instructions"
>>
>>             Any explanation on how to incorporate these welcome messages?
>>
>>             Thanks...
>>
>>
>>
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>
>
>
>
>
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