5.2. N-body benchmark with OpenACC

Nbody simulation is a simulation of a dynamical system of particles, usually under the influence of physical forces, such as gravity.

Versions

• 01.nbody_openacc: Parallel version using OpenACC tasks

Execution instructions

To run the program use: ` ./nbody_openacc [input-file] `

Input files can be found in the data/input folder. The programs creates a nbody_out.xyz file which can be compared with the reference file in the data/output folder to check for correctness. Note that due to floating point precision you may get slightly different results in certain lines of the output. Use a tool like diff or vimdiff to inspect and figure out if the differences are actually negligible.