is a miniapp for an N-body cosmology code, based on HACC and the CoPA Cabana Particle Toolkit. The driver bootstraps a direct particle-particle short-range solver designed for GPUs. The solver follows the method used by HACC's P3M implementation for computing the short-range component of the gravitational force.
The only required input to build is the Cabana install location. The default Kokkos device is used to run HACCabana.
mkdir build
cd build
cmake -DCMAKE_PREFIX_PATH=$CABANA_INSTALL ..
make
Using input and verification files (generated from HACC).
./build/driver_short-range -i ../PRE_rank0_particle_data.bin -v ../POST_rank0_particle_data.bin -t 0 -c ./256.indat.params
or use synthetically generated data
./build/driver_short-range -s -t 0 -c ./256.indat.params