From https://developer.qualcomm.com/sites/default/files/docs/snpe/compiling_udo_package.html:
This SNPE release supports building UDO DSP implementation libraries using Hexagon-SDK 4.0.1/4.0.2 and QNN SDK
I can download Hexagon-SDK 4.0+ from QPM. However, I can't find any information on QNN SDK.
Where can I obtain QNN SDK?
Dear customer,
The QNN still download for specific customer only. You can bring up the model task on SNPE firstly.
BR.
Wei
Can I get the QNN SDK over createpoint? How do I find it?
yes, you can go on a offical website and download
If you have permission of QNN, next link should useful
https://createpoint.qti.qualcomm.com/tools/#suite/12666/73301
Or you can click Tools-->enter NN in Filer Results.