RE: [Swarm-Support] Swarm questions

[Marshall, James A R]

Li,
  in answer to (2), there is a package called Drone you could look at
(http://pscs.physics.lsa.umich.edu/Software/Drone/) although I haven't used
it. Alternatively you can just create your own parameter manager class and
use it to sweep parameter values over multiple runs, where for each run you
create a new instantiation of your highest level swarm with the parameters
for that run, start it, terminate it, log results then drop it. My EPD app
does this in Objective C
(ftp://ftp.swarm.org/pub/swarm/apps/objc/contrib/EPD-2.1.1-2.1.1.tar.gz).
The advantage of Drone is that it lets you farm simulation runs out over a
network of computers, which is nice if you're doing some heavy number
crunching.
        James

---
Dr James A R Marshall
Complex Systems Modelling Group (COSMIC)
Department of Earth Science and Engineering
Imperial College London
Tel: +44 (0)20 7594 7493
Fax: +44 (0)20 7594 7444
Container World Project - http://www.ese.ic.ac.uk/research/containerworld/



-----Original Message-----
From: Li An [mailto:address@hidden
Sent: 02 April 2003 17:25
To: address@hidden
Subject: [Swarm-Support] Swarm questions


Dear Swarm folks,

I have the following questions. If you have comments or hints, I will 
appreciate it:

(1) I remember when I read the Swarm tutorial, there is a quick way to turn 
on or off the flag of all the elements in a list without traversing the 
list. Is this true? If so, how to do it?
(2) I want to run the same code many times for Monte Carlo simulation, how 
can I get the code run automatically without typing "javaswarm xxxx" each 
time and write the results (say, population size) to a file that will be 
saved in hard disk and I can check later?

Thanks,


Li An 

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