1. More information

2. See also

3. External links

ChaNGa (Charm N-body GrAvity solver) is a computer program to perform collisionless N-body simulations. It can perform cosmological simulations with periodic boundary conditions in comoving coordinates or simulations of isolated stellar systems. It is based on the Barnes–Hut algorithm and uses Ewald summation for periodic forces.

ChaNGa makes use of the Charm++ parallel programming system, including its dynamic load balancing schemes, in order to scale to large processor configurations. Simulation results have been reported on up to 20,000 IBM Bluegene/L processors [https://web.archive.org/web/20080512011208/http://charm.cs.uiuc.edu/papers/ChaNGaIPDPS08.shtml].

More information

For more information on obtaining, building and running ChaNGa, please see the Wiki documentation at

[https://web.archive.org/web/20070205093323/http://librarian.phys.washington.edu/astro/index.php/Research%3AChaNGa].

See also

• PKDGRAV  
• GADGET
• GRAPE

External links

• University of Washington ChaNGa website
• Charm++ web page at the Parallel Programming Lab, UIUC
• [https://web.archive.org/web/20070205093323/http://librarian.phys.washington.edu/astro/index.php/Research%3AChaNGa ChaNGa Wiki documentation]

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