Python bindings for NVSHMEM

NVSHMEM4Py is the official Python language binding for NVSHMEM, a high-performance parallel programming interface based on OpenSHMEM. It provides a Pythonic interface to NVSHMEM's functionality, enabling applications to leverage the Partitioned Global Address Space (PGAS) programming model for efficient multi-GPU and multi-node communication. Key features include seamless integration with NumPy, CuPy, and PyTorch, symmetric memory management, and support for one-sided communication operations (put/get, collectives, atomics) and synchronization primitives. The library `nvshmem4py-cu13` specifically targets CUDA 13.x. The project demonstrates a healthy version release cadence, with the latest version 0.3.0 released in March 2026.