use consistent capitalization with NVIDIA

for a long time and had known bugs and problems.  Significant parts of

the design were transferred to the

:ref:`KOKKOS package <PKG-KOKKOS>`, which has similar

performance characteristics on Nvidia GPUs. Both, the KOKKOS

performance characteristics on NVIDIA GPUs. Both, the KOKKOS

and the :ref:`GPU package <PKG-GPU>` are maintained

and allow running LAMMPS with GPU acceleration.

* The GPU package requires neighbor lists to be built on the CPU when using

  exclusion lists, or a triclinic simulation box.

* The GPU package can be compiled for CUDA or OpenCL and thus supports

  both, Nvidia and AMD GPUs well. On Nvidia hardware, using CUDA is typically

  both, NVIDIA and AMD GPUs well. On NVIDIA hardware, using CUDA is typically

  resulting in equal or better performance over OpenCL.

* OpenCL in the GPU package does theoretically also support Intel CPUs or

  Intel Xeon Phi, but the native support for those in KOKKOS (or USER-INTEL)

+-----------------------------------------+-------------------------------------------------------+

| :doc:`USER-INTEL Package <Speed_intel>` | for Intel CPUs and Intel Xeon Phi                     |

+-----------------------------------------+-------------------------------------------------------+

| :doc:`KOKKOS Package <Speed_kokkos>`    | for Nvidia GPUs, Intel Xeon Phi, and OpenMP threading |

| :doc:`KOKKOS Package <Speed_kokkos>`    | for NVIDIA GPUs, Intel Xeon Phi, and OpenMP threading |

+-----------------------------------------+-------------------------------------------------------+

| :doc:`USER-OMP Package <Speed_omp>`     | for OpenMP threading and generic CPU optimizations    |

+-----------------------------------------+-------------------------------------------------------+