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Arm DDT ("DDT") is a parallel debugger and part of the Arm Forge software suite. You can find more information for ≥ version 23.x here:
https://docs.linaroforge.com/24.0.2/html/forge/index.html
and for <= version 21.x here
https://developer.arm.com/documentation/101136/2101/DDT
DDT is installed on HLRN IV and easiest used via a connection to a locally running GUI.
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