Setting up CUDA/TensorRT manually on Jetson AGX Xavier

with sdkmanager where to get cuda packages for manual installation?
reference https://developer.nvidia.com/cuda-toolkit-65#linux-arm
located: /sdkm_downloads

sudo dpkg -i *
(Reading database ... 149017 files and directories currently installed.)
Preparing to unpack cuda-repo-l4t-10-0-local-10.0.166_1.0-1_arm64.deb ...
Unpacking cuda-repo-l4t-10-0-local-10.0.166 (1.0-1) over (1.0-1) ...
Preparing to unpack libcudnn7_7.3.1.28-1+cuda10.0_arm64.deb ...
Unpacking libcudnn7 (7.3.1.28-1+cuda10.0) over (7.3.1.28-1+cuda10.0) ...
Preparing to unpack libcudnn7-dev_7.3.1.28-1+cuda10.0_arm64.deb ...
update-alternatives: removing manually selected alternative - switching libcudnn to auto mode
Unpacking libcudnn7-dev (7.3.1.28-1+cuda10.0) over (7.3.1.28-1+cuda10.0) ...
Preparing to unpack libcudnn7-doc_7.3.1.28-1+cuda10.0_arm64.deb ...
Unpacking libcudnn7-doc (7.3.1.28-1+cuda10.0) over (7.3.1.28-1+cuda10.0) ...
Setting up cuda-repo-l4t-10-0-local-10.0.166 (1.0-1) ...
Setting up libcudnn7 (7.3.1.28-1+cuda10.0) ...
Setting up libcudnn7-dev (7.3.1.28-1+cuda10.0) ...
update-alternatives: using /usr/include/aarch64-linux-gnu/cudnn_v7.h to provide /usr/include/cudnn.h (libcudnn) in auto mode
Setting up libcudnn7-doc (7.3.1.28-1+cuda10.0) ...
Processing triggers for libc-bin (2.27-3ubuntu1) ...
sudo apt-key add /var/cuda-repo-10-0-local-10.0.166/7fa2af80.pub
sudo apt update
Get:1 file:/var/cuda-repo-10-0-local-10.0.166  InRelease
Ign:1 file:/var/cuda-repo-10-0-local-10.0.166  InRelease
Get:2 file:/var/cuda-repo-10-0-local-10.0.166  Release [574 B]
Get:2 file:/var/cuda-repo-10-0-local-10.0.166  Release [574 B]
Get:3 file:/var/cuda-repo-10-0-local-10.0.166  Release.gpg [819 B]
Get:3 file:/var/cuda-repo-10-0-local-10.0.166  Release.gpg [819 B]
Get:4 file:/var/cuda-repo-10-0-local-10.0.166  Packages [10.9 kB]
Hit:5 http://ports.ubuntu.com/ubuntu-ports bionic InRelease
Get:6 http://ports.ubuntu.com/ubuntu-ports bionic-updates InRelease [88.7 kB]
Hit:7 http://ports.ubuntu.com/ubuntu-ports bionic-backports InRelease
Get:8 http://ports.ubuntu.com/ubuntu-ports bionic-security InRelease [88.7 kB]
Get:9 http://ports.ubuntu.com/ubuntu-ports bionic-updates/main arm64 Packages [528 kB]
Get:10 http://ports.ubuntu.com/ubuntu-ports bionic-updates/main Translation-en [247 kB]
Get:11 http://ports.ubuntu.com/ubuntu-ports bionic-updates/universe arm64 Packages [863 kB]
Get:12 http://ports.ubuntu.com/ubuntu-ports bionic-updates/universe Translation-en [285 kB]
Fetched 2,102 kB in 4s (516 kB/s)                                 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
4 packages can be upgraded. Run 'apt list --upgradable' to see them.
sudo apt-get install cuda
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package cuda

seems resolved with

sudo apt-get install cuda-toolkit-10-0
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