gputools: This provides R functions that wrap around GPU-based algorithms for common operations, such as linear models and matrix algebra. It requires CUDA, and hence an NVIDIA GPU.

gmatrix: This provides the gmatrix and gvector classes to represent matrices and vectors respectively in NVIDIA GPUs. It also provides functions for common matrix operations such as matrix algebra, and random number generation and sorting.

RCUDA: This provides a low-level interface to load and call a CUDA kernel from an R session. Using RCUDA requires a good understanding of the CUDA language, but allows more flexibility and code optimization. More information about t can be...