NVLink

InfiniBand is a high-performance interconnect technology that competes with NVLink for high-bandwidth, low-latency communication between GPUs and other devices, particularly in HPC environments.

PCIe (Peripheral Component Interconnect Express) is a common interconnect standard for connecting GPUs to CPUs and other devices. While NVLink offers higher bandwidth and lower latency for GPU-to-GPU communication, PCIe is a more ubiquitous and general-purpose interconnect solution, directly competing as an alternative.

RDMA (Remote Direct Memory Access) is a memory access technology that can be used in conjunction with NVLink to further improve data transfer performance between systems. NVLink provides the hardware layer, while RDMA can provide the software/protocol layer for efficient memory access.

CUDA is NVIDIA's parallel computing platform and programming model. NVLink enhances GPU-to-GPU communication, making CUDA applications that leverage multi-GPU setups more efficient. CUDA leverages NVLink for faster inter-GPU communication.

PyTorch is a popular machine learning framework. NVLink can improve the performance of PyTorch models that utilize multiple GPUs by providing faster communication between GPUs, especially during distributed training.