A framework for simulation of networks of hybrid automata, similar to SHIFT and Lambda-SHIFT. Includes ruby-based DSL for defining simulation components, and ruby/C code generation and runtime.
RedShift is for simulating digital devices operating in an analog world. It's also for simulating any system that exhibits a mix of discrete and continuous behavior.
There's not much documentation yet, but plenty of examples. Some of the original SHIFT papers are available: Shift: A Formalism and a Programming Language for Dynamic Networks of Hybrid Automata.
My 2009 rubyconf talk discusses RedShift.
RedShift needs ruby (1.8, 1.9, 2.0, 2.1) and a compatible C compiler. If you can build native gems, you're all set.
Some of the examples also use Ruby/Tk and the tkar gem.
Install as gem:
gem install redshift
If you have a multicore system and are using the gnu toolchain, set
REDSHIFT_MAKE_ARGS='-j -l2'
or some variation. You'll find that rebuilds of your simulation code go faster.
RedShift combines dataflow programming (for continuous variables) with actor-based programming (for discrete events, states, and variables, and also for continuous variables).
See the examples dir.
The RedCloud project is based on RedShift.
Copyright (C) 2001-2014, Joel VanderWerf, mailto:vjoel@users.sourceforge.net Distributed under the Ruby license. See www.ruby-lang.org.
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We found that redshift demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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