ChaNGa

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ChaNGa (Charm N-body GrAvity solver) is a code 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 [1].

[edit] More Information

For more information on obtaining, building and running ChaNGa, please see the Wiki documentation at [2].

[edit] See Also

• PKDGRAV [3]
• GADGET
• GRAPE

[edit] External links

• University of Washington ChaNGa website
• Charm++ web page at the Parallel Programming Lab, UIUC
• ChaNGa Wiki documentation