cannot find driveworks SDK on DPX2

After flashing my DPX2, I realised that the folder /usr/local/driveworks which is supposed to contain the SDK is missing. Can I check why this happened and how can I resolve it?

Dear gohengwei,

Did you flash DPX2 with DriveWorks option in DriveInstall 4.1.8.0 Linux SDK(https://developer.nvidia.com/nvidia-drive-downloads)?
Could you please refer to DRIVEInstall installation instructions? Thanks.