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Data Distribution components for the ALICE O2

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Data Distribution

Data Distribution processes (O2 devices) implement SubTimeFrame building on FLPs, and TimeFrame aggregation on EPNs.

Components

Components of the data distribution chain are:

  • StfBuilder (FLP): The first process (O2 device) in the chain. It receives readout data and once all HBFrames are received, forwards the STF to the next device in the chain.
  • StfSender (FLP): Receives STF data and related results of local processing on FLP and performs the TimeFrame aggregation.
  • TfBuilder (EPN): Receives STFs from all StfSender processes, creates the full TimeFrame and forwards it to global processing.
  • TfScheduler (service): Service discovery and active TimeFrame steering.

Use cases

Standalone, testing and development use-cases are discussed here.

Contact

Gvozden Nešković [email protected]