21-25 May 2012
New York City, NY, USA
US/Eastern timezone

GPU-based algorithms for ATLAS High-Level Trigger

24 May 2012, 13:30
4h 45m
Rosenthal Pavilion (10th floor) (Kimmel Center)

Rosenthal Pavilion (10th floor)

Kimmel Center

Poster Online Computing (track 1) Poster Session


Jacob Russell Howard (University of Oxford (GB))


One possible option for the ATLAS High-Level Trigger (HLT) upgrade for higher LHC luminosity is to use GPU-accelerated event processing. In this talk we discuss parallel data preparation and track finding algorithms specifically designed to run on GPUs. We present a "client-server" solution for hybrid CPU/GPU event reconstruction which allows for the simple and flexible integration of the specific GPU-accelerated algorithms into existing ATLAS HLT software. The resulting speed-up of event processing times obtained with high-luminosity simulated data are presented and discussed.

Primary author

Dmitry Emeliyanov (STFC - Science & Technology Facilities Council (GB))


Jacob Russell Howard (University of Oxford (GB))

Presentation Materials