For users of SimPy, a discrete event simulation package for Python ()

Re: TimeOuts

> Is it possible to signal SimEvents at some specific time?

I'm very new to Simpy, but here's my initial idea on signalling events at a specific time.

Maybe you could use the waituntil synchronization feature with the condition function using now() to test the current time against a specified value? Then when it matches, fire an event or perform the desired action.

e.g.

def time135():

return now() == 135

def run(self):
    while True:
      yield waituntil, self, time135
        # do something

See:“waituntil”synchronization

http://simpy.sourceforge.net/SimPyDocs/Manuals/Manual.html#waituntil-synchronization-waiting-for-any-condition

Good luck,

- M.A.

2009/7/31 Richard Nelson <richardn <at> cs.waikato.ac.nz>

In the SimPy manual, in the section on SimEvents it gives a description
of yield waitevent,self <events part> and then gives a description of
<events part> with examples. Both the examples for a tuple and a list
of SimEvent objects include and object called TimeOut. There are no
other references to TimeOuts that I can find. How do I create TimeOut
event objects? Is it possible to signal SimEvents at some specific time?

Thanks,
Richard.

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Simpy-users mailing list
Simpy-users <at> lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/simpy-users

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day 
trial. Simplify your report design, integration and deployment - and focus on 
what you do best, core application coding. Discover what's new with 
Crystal Reports now.  http://p.sf.net/sfu/bobj-july

_______________________________________________
Simpy-users mailing list
Simpy-users <at> lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/simpy-users

headers

Klaus G. Muller | 5 Aug 11:16

Re: TimeOuts

All:
I would not do it this way -- it is much slower then scheduling an event.

Klaus Muller

Michael Antonov wrote:

> Is it possible to signal SimEvents at some specific time?

I'm very new to Simpy, but here's my initial idea on signalling events at a specific time.

Maybe you could use the waituntil synchronization feature with the condition function using now() to test the current time against a specified value? Then when it matches, fire an event or perform the desired action.

e.g.

def time135():

      return now() == 135

def run(self):
    while True:
      yield waituntil, self, time135
        # do something

See:“waituntil”synchronization

http://simpy.sourceforge.net/SimPyDocs/Manuals/Manual.html#waituntil-synchronization-waiting-for-any-condition

Good luck,

- M.A.

2009/7/31 Richard Nelson <richardn <at> cs.waikato.ac.nz>
In the SimPy manual, in the section on SimEvents it gives a description
of yield waitevent,self <events part> and then gives a description of
<events part> with examples. Both the examples for a tuple and a list
of SimEvent objects include and object called TimeOut. There are no
other references to TimeOuts that I can find. How do I create TimeOut
event objects? Is it possible to signal SimEvents at some specific time?

Thanks,
Richard.

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Simpy-users mailing list
Simpy-users <at> lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/simpy-users

------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Simpy-users mailing list Simpy-users <at> lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/simpy-users

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day 
trial. Simplify your report design, integration and deployment - and focus on 
what you do best, core application coding. Discover what's new with 
Crystal Reports now.  http://p.sf.net/sfu/bobj-july

_______________________________________________
Simpy-users mailing list
Simpy-users <at> lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/simpy-users

headers

Mike Luntz | 14 Aug 19:07

newbie needs help; what is wrong with this program?

Hi,

I am new to both Python and SimPy and am trying to generate a few sample
examples as I work through Norm Matloff's tutorials. The scenario I am
attempting to emulate is random arrivals to a collection of multiple
servers where the user picks the shortest line.

I have generated a program that has 3 classes: one is a generator of
events; one is a single server that has multiple instances; the last is
a process that should look at the queues of all the servers and assign
the event to the server with the shortest queue. The program is
attached.

I don't mind if someone has a different approach to simulating this
scenario that they want to share, but I would really appreciate someone
explaining why this program does not work since the reason for writing
it was as a learning experience. As you can see from all the commented
out lines, I have been trying a number of things to get it to work. I
have found a number of errors and fixed them, but it still isn't working

Thanks,
Mike

Attachment (testPassivate4.py): text/x-python, 2339 bytes

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day 
trial. Simplify your report design, integration and deployment - and focus on 
what you do best, core application coding. Discover what's new with 
Crystal Reports now.  http://p.sf.net/sfu/bobj-july

_______________________________________________
Simpy-users mailing list
Simpy-users <at> lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/simpy-users

headers

Dan Homerick | 14 Aug 23:34

Re: newbie needs help; what is wrong with this program?

I just realized that the email conversation I've been having with Mike
isn't going through the list. It's probably worth mentioning that his
original bugs have been worked out.

Cheers,
 - Dan

On Fri, Aug 14, 2009 at 10:07 AM, Mike Luntz<laptop <at> mltserv.com> wrote:
> Hi,
>
> I am new to both Python and SimPy and am trying to generate a few sample
> examples as I work through Norm Matloff's tutorials. The scenario I am
> attempting to emulate is random arrivals to a collection of multiple
> servers where the user picks the shortest line.
>
> I have generated a program that has 3 classes: one is a generator of
> events; one is a single server that has multiple instances; the last is
> a process that should look at the queues of all the servers and assign
> the event to the server with the shortest queue. The program is
> attached.
>
> I don't mind if someone has a different approach to simulating this
> scenario that they want to share, but I would really appreciate someone
> explaining why this program does not work since the reason for writing
> it was as a learning experience. As you can see from all the commented
> out lines, I have been trying a number of things to get it to work. I
> have found a number of errors and fixed them, but it still isn't working
>
> Thanks,
> Mike
>
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Simpy-users mailing list
> Simpy-users <at> lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/simpy-users
>
>

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day 
trial. Simplify your report design, integration and deployment - and focus on 
what you do best, core application coding. Discover what's new with 
Crystal Reports now.  http://p.sf.net/sfu/bobj-july

headers

Harriv | 17 Aug 12:27

Industrial intralogistics examples

Hi,

 Are there any examples or tutorials available for industrial
intralogistics/materials handling applications? Eg conveyor systems,
robot cells, forklifts, storages etc.

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day 
trial. Simplify your report design, integration and deployment - and focus on 
what you do best, core application coding. Discover what's new with 
Crystal Reports now.  http://p.sf.net/sfu/bobj-july

headers

Tony Vignaux | 20 Aug 06:27

Re: Industrial intralogistics examples

I do not know of any examples or particular models. It would be interesting to develop some, though. For example conveyers may need an approximation to a continuous model. Forklifts would be OK. Storages are, of course Levels or Stores.

On Mon, Aug 17, 2009 at 10:27 PM, Harriv <harriv <at> gmail.com> wrote:

Hi,

Are there any examples or tutorials available for industrial
intralogistics/materials handling applications? Eg conveyor systems,
robot cells, forklifts, storages etc.

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day 
trial. Simplify your report design, integration and deployment - and focus on 
what you do best, core application coding. Discover what's new with 
Crystal Reports now.  http://p.sf.net/sfu/bobj-july

_______________________________________________
Simpy-users mailing list
Simpy-users <at> lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/simpy-users

8	February 2012
39	January 2012
23	December 2011
4	November 2011
9	October 2011
7	September 2011
25	August 2011
16	July 2011
25	June 2011
8	May 2011
10	April 2011
3	March 2011
9	February 2011
14	January 2011
14	December 2010
3	November 2010
19	October 2010
6	September 2010
5	August 2010
12	July 2010
22	June 2010
10	May 2010
10	April 2010
14	March 2010
30	February 2010
16	January 2010
9	December 2009
20	November 2009
16	October 2009
22	September 2009
6	August 2009
29	July 2009
2	June 2009
2	May 2009
19	April 2009
41	March 2009
2	February 2009
5	January 2009
1	December 2008
8	September 2008
43	August 2008
10	July 2008
3	June 2008
19	May 2008
17	April 2008
7	March 2008
11	February 2008
20	January 2008
4	December 2007
16	November 2007
15	October 2007
20	September 2007
11	August 2007
6	July 2007
17	June 2007
9	May 2007
23	April 2007
19	March 2007
25	February 2007
5	January 2007
13	December 2006
6	November 2006
24	October 2006
16	September 2006
2	August 2006
1	July 2006
5	June 2006
12	May 2006
17	April 2006
3	March 2006
8	February 2006
21	January 2006
41	December 2005
16	November 2005
12	October 2005
32	September 2005
8	August 2005
37	July 2005
2	June 2005
21	April 2005
28	March 2005
20	February 2005
17	January 2005
11	December 2004
10	November 2004
20	October 2004
6	September 2004

Mon	Tue	Wed	Thu	Fri	Sat	Sun

					1	2
3	4	5	6	7	8	9
10	11	12	13	14	15	16
17	18	19	20	21	22	23
24	25	26	27	28	29	30
31