Title: Neural depth optimization error on RTX 5050 (Blackwell) — ZED SDK 4.2.1

Hi everyone,

I recently did a clean installation of ZED SDK 4.2.1 on a system with an NVIDIA GeForce RTX 5050 (Blackwell architecture) and I’m unable to optimize any AI models. The process fails immediately with the following error:

neural_depth_3.6 => 2
System specs:

ZED SDK: 4.2.1
GPU: NVIDIA GeForce RTX 5050 (Blackwell)
Driver: 576.88
CUDA (system): 12.9
CUDA (ZED Diagnostic): 12.1.66
OS: Windows 11
CPU: Intel Core Ultra 7 165H
What I tried:

Running ZED Diagnostic Tool both from GUI and CMD as Administrator
Running -nrlo and -nrlo_plus flags from command line
Clean reinstall of ZED SDK
The ZED Diagnostic shows a green checkmark for SDK, CUDA, Processor and Camera Test, but AI MODELS only shows an info icon (not a checkmark), which confirms the optimization is failing.

I found a similar thread about RTX 5090 with ZED SDK 4.2.5. Is ZED SDK 4.2.x simply incompatible with Blackwell GPUs for model optimization? Should I upgrade to 5.x?

Any guidance would be appreciated. Thanks!

Hi,

Yes you need to upgrade, the support for Blackwell GPU has been added with the 5.0.1 version of the SDK.

I’d recommend installing the latest version (5.3).