Free simulation software for linux

GENESIS (short for GEneral NEural SImulation System) is a general purpose simulation platform that was developed to support the simulation of neural systems ranging from subcellular components and biochemical reactions to complex models of single neurons, simulations of large networks, and systems-level models.

GENESIS has provided the basis for laboratory courses in neural simulation at Caltech, the Marine Biological Laboratory, the Crete, Trieste, Bangalore, and Obidos short courses in Computational Neuroscience, and at least 49 universities of which we are aware.

Most current GENESIS applications involve realistic simulations of biological neural systems. Although the software can also model more abstract networks, other simulators are more suitable for backpropagation and similar connectionist modeling.

Installation

1. Pick the place where you want to install the "genesis" directory tree. If you are making a system-wide installation as "root" user, /usr/local is a good choice. For a personal installation, without root privileges, you can use your home directory ("~"). Change to this directory and extract the genesis directory from the archive file genesis2.2.1-linux-bin.tar.gz. For example,

cd /usr/local
tar xvzf /mnt/cdrom/genesis2.2.1-linux-bin.tar.gz

or from wherever you have it (e.g.~/downloads/genesis2.2.1-linux-bin.tar.gz).

2. Change to the "genesis" directory and run the setup script that creates the ".simrc" GENESIS initialization file". Then copy .simrc to your home directory.

cd genesis
./binsetup
cp .simrc ~

3. Finallly, add the genesis directory to your search path, so that "genesis" can be found from any directory that you are in. If your login shell is bash, you can do this by editing the .bashrc file in your home directory to add the line

PATH=$PATH:/usr/local/genesis

at the end of the file. If you are using tcsh or csh as your command shell, add

set path=($path /usr/local/genesis)

to your .tcsh or .csh file.

At this point, you are ready to try running GENESIS. Change into the directory genesis/Scripts and try some of the tutorials suggested in the README file.

KFilter is a tool to design acoustic loudspeakers in the theoretical way. It provides an interactive analysis of the equivalent analogue circuit design.
This is useful to create a good draft construction which can be improved by further measurement. Future measurement features are planned.
Main features:
- generating and simulation of the equivalent circuit design of a loudspeaker
- simulation of a passive eight-step topology passiv filter network
- generating of the equivalent circuit design of different volume types
- merging the results of point 1 to 3 in a free scaleable output window
- acoustic pressure, impedance and summary results of different drivers
- a wizard to generate standart filter circuit proposals for further analysis
- good optimizations / very fast algorythms

SeSAm (Shell for Simulated Agent Systems) provides a generic environment for modelling and experimenting with agent-based simulation.
We specially focused on providing a tool for the easy construction of complex models, which include dynamic interdependecies or emergent behaviour.
SeSAm agents consist of a body, that contains a set of state variables and a behaviour that is implemented in form of UML-like diagram. Based on an extensive number of primitive components, a user is able to design a simulation graphically without knowing the syntax of a traditional programming language.
The model specification is executable in the same environment and the dynamics of this simulation may be observed. As there are freely configurable instruments for gathering data and scripting options for constructing simulation experiments, SeSAm is a highly valuable tool for MAS simulations especially for complex models with flexible agent behaviour and interactions.
Main features:
- Easy visual agent modelling,
- Flexible environment and situation definition,
- The whole power of a programming language,
- Integrated graphical simulation analysis ,
- Distribution of simulation runs in your LAN ,
- and many further features.....

pittrainer provides a cockpit training environment for the Falcon 4 Allied Force simulation.
In order to run Pit Trainer, you will need to have the Java v1.4.2 (or later) runtime installed.
Enhancements:
- This version provides an interactive ICP/DED with tips for the various DED pages, an embedded Java runtime with the Windows installer, and a number of updates to existing tip text.

Gravetat is a gravity and electromagnetism simulator. It offers users the ability to create a universe with a few particles and then see how they interact due to the forces mentioned before. It uses its own 3D rendering engine (released under the branch libPunts).
Gravetat 3D
- Real-time simulation
- Own 3D rendering engine (libPunts)
- Random universe generator
- Exports to SVGZ format
- Win32, Linux and MacOSX ports
Gravetat 2D
- Real-time simulation
- Exports to SWF format
- Random universe generator
Enhancements:
- Autotools (automake and autoconf) support has been added.
- This version is again usable for further development.

Boomer project is a general purpose modeling and simulation program.

It provides the estimation of parameter values by non-linear weighted least squares regression or the simulation of complex systems of differential equations.

Parameter estimation can be by normal or Bayesian methods. A comprehensive list of weighting schemes is included. The model to be analyzed can be entered as a system of integrated equations or as a system of differential equations.

Differential equations are solved by a classical fourth order Runge-Kutta method, a fourth order Runge-Kutta-Gill method, a four/five Runge-Kutta-Fehlberg method, an Adams predictor-corrector method, or Gears method for stiff equations.

Simulation with random error in parameters or data are also possible. A batch run can be repeated many times to assist in Monte Carlo type studies.

Installation:

Untar the downloaded file with

tar -xvzf fboomer312a.tar.gz

As an administrator user you can move boomer to your PATH and thereby invoke the program globally. The command:

sudo cp boomer /usr/bin/boomer

Enter password

from your download folder (where the new version of boomer resides) will put boomer in a directory usually included in your PATH variable. This can be checked with the command:

echo $PATH

I havent checked this with Linux/Fedora yet but something similar should work. I only get limited time on my younger sons game machine.

FARnodes is a protocol simulation and execution environment. FARnodes project comes with a command-line frontend, a protocol code distribution manager, and a statistical analyser based on PyKDE.
Example algorithms like Consensus and several other small tools and a big chunk of documentation make this a suitable entry-level software for people who have some interest in this (somewhat academic) area.
Main features:
- High portability and easy extensibility of the framework due to a pure Python implementation.
- Protocols can assume either fully synchronous or asynchronous systems, or one of FAR (Finite Average Response times) or PS (Partial Synchrony).
- Channels can exhibit unreliable or stubborn behaviour.
- Failure detectors include EA-FD and PS-FD, both eventually perfect, but others can be added.
- Simulations can expect a virtual timer and can be saved and reloaded in many cases.
- Tools for remote execution and graphical data analysis.