README.md

### Program installation guide 
1. Install CUDA (for NVIDIA environment) of ROCM (for AMD environment). Modify the installation path in the makefile - "DEV_PATH".

2. Install MPI. Modify the installation path in the makefile - "MPI_PATH".

3. The makefile will recognize the command line instruction "hipcc" to determine the environment.

4. If you use NVIDIA environment, please modify "-code" and "-arch" according to the hardware architecture.

5. Execute "make".