Unreal 5.1.1, Path Tracing is not available anymore on NVIDIA A10G (EC2 GPU instances)

Development Rendering
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1

Hey there, we are having issue with running Unreal 5.1 Path Tracer on EC2 GPU instances. It seems that 5.1 does not fully support A10G anymore?

It was all good with 5.0 and A10G.

Showing me this error:
image

Is this issue somehow connected with Path Tracer not showing up in View modes?
P.S. A10G 100% supports SM6

2

Make sure Windows and your GPU drivers are updated. It specifically needs Shader Model 6.6 atomics support, and outdated versions of Windows or old GPU drivers can cause issues.

3

I will try to use Windows Datacenter 2022 and latest drivers, hopefully one of them causes this issue

4

Okay, so make sure your Windows is updated so that latest DirectX features are available (so called ID3D12Device9 interface). This helped me to resolve the issue on EC2

5

Hi there @raianlp. Hope you’re well!

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Thanks and happy developing! :smiley: