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RE: [EnergyPlus_Support] How to properly set the random seed for stochastic processes in EMS?





Hi,

 

1.        I think on many computer systems, the limit on the range of numbers for the seed comes out to be 0 to 2,147,483,647.    (2^31-1)   I’ll file a bug report on this, since it shouldn’t crash and should probably have used a larger integer model.

2.       Behavior did change a lot for V8.  Previously it was the only first couple of digits that really got used.  Now the entire real is rounded to the nearest integer.  Any values after a decimal are ignored.

 

If you run each model in series, or at least staggered starts in real time, you can try the new “ActualTime” built-in variable. It reads the computer clock at start up to generate a unique seed value for each run.

 

Brent

 

 

 

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