What is CUDA (Compute Unified Device Architecture)?

CUDA is introduced by Nvidia. It permits software developers and computer programmers to utilize a CUDA-empowered graphics processing unit (GPU) for useful processing, a methodology named GPGPU (general-purpose computing on graphics processing units). The CUDA stage is a software layer that provides direct admittance to the GPU’s virtual instruction.
The CUDA stage is intended to work with programming languages like C, C++, and Fortran. CUDA has many advantages using GPGPU, in this code can read from arbitrary addresses in memory, Unified virtual memory. CUDA exposes a fast shared memory region that can be utilized as a user-managed cache, enabling higher bandwidth.