Hi,
Just thought some people may be interested to hear that I've recently been looking at adding true concurrency into Kamaelia, by using Paul Boddie's pprocess as the core mechanism to allow us to run multiple Kamaelia systems in the same app. (Since we have thread based, and co-operative generator based components, process based is the next logical step) [1] http://kamaelia.sourceforge.net/Home [2] http://pypi.python.org/pypi/pprocess Anyhow, first proof of concept is to take a _relatively_ non-trivial app and a library hostile to being run in a single process and run it across multiple processes trivially. (I can't test multicpu since I don't have a multicpu machine, but this should work fine with a modern OS) So the app I've chosen is a simple pygame based drawing/doodling app, and to get it to launch 8 pygame windows from 1 app. Since neither SDL nor pygame directly support this it struck me as not just a visible proof of concept, but a useful one too (since pygame rocks! :-) Anyhow, I've written up the code here and posted a screenshot here: http://yeoldeclue.com/cgi-bin/blog/blog.cgi?rm=viewpost&nodeid=1196129474 You'll note 8 pygame windows ... :-) The original base test is here: http://yeoldeclue.com/cgi-bin/blog/blog.cgi?rm=viewpost&nodeid=1196029230 For those curious who don't like clicking on links, the code needed to allow the 8 pygame windows looks like this: class SecondProcessBasedComponent(SimplestProcessComponent): def main(self): from Kamaelia.UI.Pygame.Display import PygameDisplay from Kamaelia.UI.Pygame.MagnaDoodle import MagnaDoodle X=PygameDisplay(width=200,height=200).activate() PygameDisplay.setDisplayService(X) MagnaDoodle().run() yield 1 exchange = SecondProcessBasedComponent().activate() R = [] for _ in xrange(7): R.append(SecondProcessBasedComponent().activate()) So far, so good :-) Incidentally, yes the project is alive and well, but a resource crunch at work means I'm working on this only on my own time at the mo, which means things like releases are having a longer cycle between them than I'd like. Some recent developments include a greylisting proxy server, a ER modelling tool and a (very) simple pygame based logo like tool for teaching programming to small children. The webserver is aiming for WSGI compliance, and the project also had a small number of students working over the summer, assisting with some useful things like AIM/IRC integration, the ability to use Kamaelia systems in non-Kamaelia based scripts/systems, and looking at a sub-component model. (ie non-concurrent systems) Michael. -- http://yeoldeclue.com/blog http://kamaelia.sourceforge.net/Home -- http://mail.python.org/mailman/listinfo/python-list
