More information about the Barnes-Hut Simulation can be found here.
This implementation contains a serial and MPI version of the simulation and produces a gif of the simulated particle movement.
The gifmerge executable needs to be compiled first. This can be done by running:
gcc gifmerge.c gifmerge.h -o gifmerge
The following scripts will generate a gif of the simulation in the anim.gif file
To run the serial version:
./run_serial_barnes_hut.sh $NUMBER_OF_PARTICLES $NUMBER_OF_SIMULATION_STEPS
To run the MPI version:
./run_mpi_barnes_hut.sh $NUMBER_OF_MPI_PROCESSES $NUMBER_OF_PARTICLES $NUMBER_OF_SIMULATION_STEPS