ANN: Release 1.9.1 of SimPy (Simulation in Python) package
We announce the availability of SimPy version 1.9.1. This is an important bug-fix release of SimPy 1.9 which any user of SimPy 1.9 should download. SimPy 1.9.1 can be downloaded from http://sourceforge.net/project/showfiles.php?group_id=62366 . The SimPy homepage is at http://SimPy.SourceForge.Net . What is SimPy? ============== SimPy (= Simulation in Python) is an object-oriented, process-based discrete-event simulation language completely implemented in Python. It is released under the GNU Lesser GPL (LGPL). SimPy provides the modeler with components of a simulation model including processes, for active components like customers, messages, and vehicles, and resources, for passive components that form limited capacity congestion points like servers, checkout counters, and tunnels. It also provides monitor variables to aid in gathering statistics. Random variates are provided by the standard Python random module. Many users claim that SimPy is one of the cleanest, easiest to use discrete event simulation packages! SimPy is in use at many universities, research institutes and in industry. SimPy comes with data collection capabilities, GUI and plotting packages. It can be easily interfaced to other packages, such as plotting, statistics, or database systems. SimPy is platform-independent and runs on all systems on which Python 2.3 or later is available. Acknowledgements ================ The bugs were identified and reported by members of the SimPy user community. Thanks for this! Collaboration works! ============================== Release notes for SimPy 1.9.1 ============================== Repairs ======== SimPy 1.9.1 cures two bugs: (1) Excessive memory requirements of large or long-running scripts. This performance problem was caused by circular references between Process and event notice instances. (2) Runtime errors for pre-empts of processes holding multiple Resource objects. Additions ============ In addition to all the other, extensive documentation, SimPy 1.9.1 provides a short manual which only addresses the basic facilities of SimPy. You could consider this as "SimPy light". This manual is aimed at introducing SimPy to beginners. ------------------------------------------------------------------------ (end of Release Notes) Enjoy! Klaus Müller Tony Vignaux
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