NCCL
A software library developed by NVIDIA to accelerate multi-GPU and multi-node communication for parallel computing and deep learning.
The NVIDIA Collective Communications Library (NCCL) is a high-performance software library designed to optimize communication between GPUs within a single node or across multiple nodes. It provides efficient implementations of collective operations—such as all-reduce, broadcast, and all-gather—crucial for scaling parallel computing and distributed deep learning workloads.
NCCL is tightly integrated with deep learning frameworks like TensorFlow and PyTorch, enabling seamless acceleration of distributed training and inference. By leveraging CUDA and advanced networking technologies, NCCL minimizes communication overhead, allowing large-scale AI models to be trained faster and more efficiently.
Its cross-platform compatibility and support for various hardware configurations make NCCL a foundational tool for organizations deploying high-performance AI and HPC applications in cloud and data center environments.