In physics and astronomy, an N-body simulation is a simulation of a dynamical system of particles, usually under the influence of physical forces, such as gravity. N-body simulations are widely used tools in astrophysics, from investigating the dynamics of few-body systems like the Earth-Moon-Sun system to understanding the evolution of the large-scale structure of the universe. Here, we have achieved the same assuming n bodies are trapped inside a cuboid of given dimensions using OpenMp.

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes.

What things you need to install the software and how to install them

OpenMp
Python >= 2.7
Mayavi
Pygame

A step by step series of examples that tell you how to get a development env running. In the terminal execute the following commands.

$sudo apt-get install libomp-dev

$sudo easy_install pip<br/>
$sudo pip install mayavi

$sudo apt-get install python-pygame

Pygame is used for 2D visualisation whereas mayavi is used for 3D visualisation.

In order the simulate the environment, one needs to do the following:

This generates trajectory file for the specified number of threads which will be visualised.

$g++ -fopenmp many_body.cpp -o generate <br/>
$./generate number_of_threads

Specify the number of threads you want the code to run on in place of "number_of_threads".

Run the following commands for visualisation after trajectory file is generated.

$python2 visualiser.py 1

$python2 visualiser.py 2

Please feel free to contribute by sending in PR and opening and handling issues.

See the list of contributors who participated in this project.

This project is licensed under the MIT License - see the LICENSE.md file for details

• This project was made as a part of the course High Performance Parallel Programming.