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

Software
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!

2

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).

2 Likes
3

Thanks for the clarification.

Just to confirm: if I have another PC with an NVIDIA RTX 40-series GPU and I upgrade the ZED SDK to version 5.3, should it still be backward compatible with that GPU series?

I’m asking because I tried updating, but I’m getting an error during the AI model optimization process. So I’d like to confirm whether SDK 5.3 should work correctly with RTX 40-series GPUs, or if there are any known compatibility issues or additional steps required.

Thanks!