N-Body Simulation using CUDA

Currently supports ~330k particles on my nvidia RTX 4070 Laptop GPU. Uses the naive n^2 pair-pair interaction algorithm.

Preprocessor defines

Kernel related defines

I recommend setting these to numbers that match well with your GPU's number of multiprocessors and number of threads / multiprocessor.

• BLOCK_SIZE: Number of threads per block
• GRID_SIZE: Number of blocks

Simulation related defines

• N: number of points
• GRAVITY: gravitational constant
• SOFTENING: softening used for distance calculation
• DELTA_T: timestep