xio-sig is a vertically-integrated storage IO stack designed to support multiple vendor targets. The scope is indicated in the name: the "x" denotes vendor-specific prefixes, while IO spans data access protocols, including file-based interfaces.

This stack addresses the problem of ecosystem fragmentation in the face of developers' desire to innovate in creating features and supporting new platforms.

The github organization has been started with repositories for four projects:

• cuFile: Defines the cuFile API as a unifying interface, extensible to new features and multiple platforms
• cuFileConformance: Provides a conformance test suite to ensure interoperability and prevent ecosystem fragmentation.
• libxFile: Implements one of potentially multiple user-level libraries that implement cuFile APIs for multiple platforms
• xioLinux: A downstream forked full kernel contains enhancements required to support cuFile and libxFile

All layers are validated together to ensure consistent behavior across supported platforms. CI/CD support is delegated to individual platform vendors.

The code licenses of each repo cover code contributions and redistribution.