The Blitzen array processor as second level trigger element: Evaluation of performance on CDF calorimeter data

The performance of the massively parallel Blitzen processor in real-time cluster finding is presented. The efficiency in energy cluster detection and the related energy measurement has been evaluated on a sample of calorimeter data collected by the CDF experiment at pp̄ Fermilab collider. A comparison with the CDF off-line analysis is reported; also given are the algorithm execution times on a Blitzen simulated structure and on a few commercial processors.