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FTF GPU ITk: Add triplet confirmation

Aleksandra Poreba requested to merge aporeba/athena:ftf-gpu-pt-cut into main

Add a fake triplet filter based on duplicates finding:

Criteria for being a duplicate:

  • the same inner and middle spacepoint
  • outer spacepoints are on different layers
  • pT has the same sign
  • pT is equal within stddev

Additionally:

  • Set FTF useGPU flag based on InnerDetector flag
  • Add two more outer layers from volumes 91/71 and 90/70 as possible middle spacepoint layers

The code will be further optimized to fully utilize GPU resources

Related to EFTRACK-76

Tagging @demelian

Edited by Aleksandra Poreba

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