Re: Model Performance Under "GO" vs. "Step"

[Rob Kewley]

Jim Kresl wrote:
> 
> Hello,
> 
> I've been working with the E. Nelson version of the Village model, and
> have encountered performance problems that differ depending on whether I
> use "Go" or "Step".    Granted the model is somewhat large (400x454
> cells with ~150 agents),  but not unreasonably so.  "Go" ultimately
> results in a crash where each time step takes considerably more time
> than the one previous (~10% increase each step), even though the number
> of agents and their interactions remain constant.  Using "Time Step",
> the model runs through to completion and each step takes about the same
> time to finnish --( within +/- 5%).
> 
> I've checked for obvious memory leaks, or other design quirks, but given
> my limited experience, I'm a bit confounded.  If anyone has run into
> this situation before,  or perhaps worked with Erik Nelson this past
> summer and could offer a suggestion or explanation, I would surely
> appreciate it.
> 

I had a similar problem earlier this summer which was caused by a bug in
Swarm scheduling operations.  See the archive entry below for the fix. 
This bug is fixed in Swarm-1.0.3.

http://www.santafe.edu/projects/swarm/archive/list-archive.9708/0061.html

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