Hi,
We can build MXNet v1.8.0 on JetPack 4.5.1 and the mx.nd can work without issue.
Could you give it a try?
1. Put autobuild_mxnet.sh (3.5 KB) and mxnet_v1.8.x.patch (2.4 KB) in the same folder.
2. Build MXNet from source
$ sudo chmod +x autobuild_mxnet.sh
$ ./autobuild_mxnet.sh Xavier
$ cd mxnet/build/
$ pip3 install mxnet-1.8.0-py3-none-any.whl
Thanks.