[pypy-dev] Speeding Up SimPy
Steven H. Rogers
steve at shrogers.com
Tue Mar 17 03:36:15 CET 2009
SimPy (http://simpy.sf.net) is a very nice discrete event simulation
package written in Python. It is, however, rather slow for large models
and I'm looking at ways to speed it up. SimPy should be a good test
case for PyPy and when the JIT stabilizes, PyPy may provide faster
As we'd like to see some immediate benefits, I've tried Psyco which
provides a worthwhile 45% improvement on one model and I'll look at
modifying SimPy to work better with it. SimPy makes heavy use of
generators, so I'm interested in the support for them planned for the
next release. How close is Psyco generator support to being useful?
Greenlets look like they could be a viable alternative to generators for
simulating concurrency. How expensive are greenlets compared to generators?
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