NextGenTrigger Task 1.7

• Implementing our SoA code in MadGraph, together with
  • Stefan Roiser
  • Daniele Massaro
• We had two meetings to solve a few specific problems.

Implement NGT SoA Code in O2 standalone benchmark

• Working on this fork of the AliceO2 repo, with a CI pipeline:
  • Running on NGT hardware with 4 different GPUs (Nvidia and AMD)
  • Extended CI-pipline to fail if GPU.out changes
• Implemented SoA in:
  
  • SectorTracker
    • GPUTPCBaseTrackParam
    • GPUTPCTrackParam
    • GPUTPCTracklet
• Switch between AoS and SoA is now just one flag.
• AoS with our new data layout abstraction has zero overhead to the old code
• Made some changes to SoA/AoS code to make it more user-friendly:
  • To SoA-ify a class, this class now inherits from a CRTP base class...
  • ... and defines a boilerplate-function that applies a generic function to all members
  • the CRTP class uses this boilerplate function.
• Next Steps:
  
  • Make better use of SoA to improve performance