KvikIO is a Python and C++ library for high performance file IO. It provides C++ and Python bindings to cuFile, which enables GPUDirect Storage (GDS). KvikIO also works efficiently when GDS isn't available and can read/write both host and device data seamlessly. The C++ library is header-only making it easy to include in existing projects.

• Object oriented API of cuFile with C++/Python exception handling.
• A Python Zarr backend for reading and writing GPU data to file seamlessly.
• Concurrent reads and writes using an internal thread pool.
• Non-blocking API.
• Handle both host and device IO seamlessly.
• Provides Python bindings to nvCOMP.

• Python: https://docs.rapids.ai/api/kvikio/nightly/
• C++: https://docs.rapids.ai/api/libkvikio/nightly/