Monte-Carlo Simulation

Posted on 2006-05-31
Last Modified: 2008-02-01
Is anyone aware of an inexpensive package that can do Monte-carlo modeling and simulation.     There's a package called GoldSim that's easy to use it uses a stock-and-reservoir paradigm.   Problem is the price point is *much* to high for my budget.    Anyone aware of something like/similar?
Question by:tmonteit
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    Expert Comment

    Depending on how complex the simulation, you could develop a program that would run the simulations and log the results.

    Can you provide more details about what you want done?
    LVL 26

    Expert Comment

    have you used GoldSim?  What about it do you like?

    The quality of the results will alway depend on the quality of your model.
    If your model isn't too complex, you can do Monte Carlo simulations in Excel.
    You can (and probably should) start this way, since you can do it for close to free.

    Here are a couple of earlier questions that might be relevant:



    Author Comment

    What I like about goldsim is that I can build models using a visual components block and arrow.    Also that I can add integrators and differentiators.  Probably not so important if I knew there was simple modeling language that was sufficient.

    Also, you could put probes in to various points and produce graphs where you install probes.  

    A long time ago I used an EE tool called spice that could do similar but was for circuits.   The domain I would model is general physics and business process models.

    LVL 26

    Expert Comment

    Well you can still use PSpice -- There are free demo versions available that can handle fairly large circuits.
    There are later versions available (up to 10.5 or more), but I recommend 7.1


    You can enter models as an electrical schematics or as text.
    Most physical systems can be modeled electrically.
    You can use integrators and differentiators as electrical components or as equations [Behavioral Models].
    You can probe various parts of the model and produce graphs.

    If you are really serious, the state-of-the-art tools for this sort of thing are probably Matlab and Simulink,
    although they are as pricey as GoldSim.  


    There are inexpensive student versions of Matlab/Simulink and there are free open source clones that try
    to provide similar functionality.


    Author Comment

    >> There are inexpensive student versions of Matlab/Simulink and there are free open source clones that try
    to provide similar functionality.

    Simulink was exactly what I was thinking of.  can you point me towards the open-source clones mentioned above?
    LVL 26

    Accepted Solution

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    Author Comment

    minidez, doesn't pass the cheap or free test.  

    So far d-glitch has led me to scilab, I'm starting to like it.  I'm going to leave this open for a bit to see if any more discussion or recommendations come along.

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