Nvn — Api Version 5515 Exclusive !!top!!

NVN API version 55.15 represents a specific, proprietary graphics driver/SDK for the Nintendo Switch, often associated with GLSL shader compiler version 1.16. As a thin, low-level interface, NVN is designed for maximum hardware optimization on NVIDIA Tegra processors. For more details on the context of this driver version, visit NVIDIA Developer Forums. Could someone give a link to this old driver? - Vulkan

Exclusivity: This API is unique to Nintendo hardware (Switch and its successors) and is generally protected by non-disclosure agreements (NDAs). nvn api version 5515 exclusive

NvnResult result;
NvnVersionInfo versionInfo;
nvnGetVersionInfo(&versionInfo);
if (versionInfo.apiVersion == 5515 && versionInfo.flags & NVN_VERSION_FLAG_EXCLUSIVE_FEATURES) 
    // Enable TMC 2.0 and Asynchronous Partitions
    nvnInitializePartitionMode(NVN_PARTITION_MODE_ADAPTIVE);

NVML = NVIDIA Management Library (for GPU monitoring & management)
NVAPI = NVIDIA’s Windows-specific API (different from NVML)
There is no “NVN” — possibly you meant NVML or NVAPI.
Version 5515 is not a standard NVML release version (NVML versions track the driver branch, e.g., R550 has NVML 12.0+).

5515 could be a driver branch (e.g., 551.xx drivers).

Customize This Post
To make this post accurate for your specific use case, you may need to replace the technical specifics (e.g., "Shader Compatibility") with the actual features of the software you are referencing (e.g., "Node Validation" if it's a blockchain API). NVN API version 55
NVN API Version 55.15 is a proprietary, low-level graphics application programming interface (API) specifically developed by NVIDIA for Nintendo Switch consoles. It serves as the primary rendering interface for Switch developers, allowing them to bypass general-purpose overhead found in standards like Vulkan or OpenGL to achieve higher performance on mobile hardware. Core Technical Overview NVML = NVIDIA Management Library (for GPU monitoring
Developer Spotlight: What You Need to Know
For our developer community, API 5515 is designed to be backward compatible, but we recommend reviewing the migration guide for the following changes:
Conclusion
NVN API version 5515 exclusive is a performance-focused, forward-looking release for developers targeting specific NVIDIA hardware and willing to adopt a non‑backward‑compatible API contract. It provides granular control over latency, memory, and shader execution not possible in prior versions.