Hi,
I'm using variables with subscripts, delays in some variables and I'm reading from Excel some constants(GET XLS CONSTSANTS), (TIME STEP:1, INITIAL TIME:1 and FINAL TIME:6000.
My question is:
Is normal that Vensim spend like 3 minutes just to run the model?
I'm using win XP, and 512 MB RAM....
thank's in advance
Subscript and Delay
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- Senior Member
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- Joined: Wed Mar 12, 2003 2:46 pm
subscripts can very quickly make a model very big. To get an idea of size use Models>Setting and click on the Info/Pswd tab.
You can also watch where the model is slow. If it is slow to start the simulation probably the GET XLS CONSTANTS functions are bogging things down, if it finishes but takes forever at the last time then it is storing results (look into using a savelist). If it is slow passing through time then it is just size. Compiling will help.
You can also watch where the model is slow. If it is slow to start the simulation probably the GET XLS CONSTANTS functions are bogging things down, if it finishes but takes forever at the last time then it is storing results (look into using a savelist). If it is slow passing through time then it is just size. Compiling will help.
The cause of the problem....
Hi,
The model is slow when starts.
I run the model in different machines, and what I get is that it behaves faster on other machines, so I think that in this particular computer is the problem. (with XLS GET CONSTANTS), because if introduce the data manually, Vensim run the model very fast.
Thank's for the post.
The model is slow when starts.
I run the model in different machines, and what I get is that it behaves faster on other machines, so I think that in this particular computer is the problem. (with XLS GET CONSTANTS), because if introduce the data manually, Vensim run the model very fast.
Thank's for the post.