NVIDIA Collective Communication Library (NCCL) Runtime for CUDA 11

The `nvidia-nccl-cu11` package provides the NVIDIA Collective Communication Library (NCCL) runtime binaries specifically compiled for CUDA 11. NCCL is a high-performance library for collective communication operations (e.g., all-reduce, all-gather, broadcast) across multiple GPUs, both within a single node and across multiple nodes. It is optimized for NVIDIA GPUs and high-speed interconnects like NVLink and InfiniBand. This package primarily serves as a backend dependency for deep learning frameworks (like PyTorch, TensorFlow) and other GPU-accelerated libraries that require NCCL's capabilities for distributed computing. The current version is 2.21.5, with frequent updates corresponding to new NCCL releases and CUDA versions.