Gridding for the GPU
Build options (more parameter options in Defines.h):
PRECISION=double,float - double or single precision (default: double)
MANAGED=0,1 - Turns on managed memory
DEBUG=0,1 - Adds debug flags for both GPU and CPU
CPU_CHECK=0,1 - Checks results against a CPU-only method
COMPUTE_GCF=0,1 - Computes a simple GCF on the fly, rather then load from memory
GATHER=0,1 - "Gather" method in which each thread gathers contributions to a single image point
MOVING_WINDOW=0,1 - "Moving window" approach.
FILE_INPUT=0,1 - Rather than generate random input, read from the file called UVW_in.dat
FAST_MATH=0,1 - Use fast math intrinsics HDF5_INPUT=0,1 - Read an hdf5 file as input. This functionality is not very robust. vis.hdf5 is provided. CAS_ATOMIC=0,1 - Use a compare-and-swap atomic instead of a native atomic. This is required for double precision on Kepler or earlier