The following email has been sent to LAMANNA, Gianluca:

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Dear Gianluca Lamanna,

The submission of your abstract has been successfully processed.

Abstract submitted: https://indico.cern.ch/event/192695/call-for- abstracts/my-abstracts.

Status of your abstract: https://indico.cern.ch/event/192695/call- for-abstracts/330/.

See below a detailed summary of your submitted abstract:

Conference: Tipp 2014 - Third International Conference on Technology and Instrumentation in Particle Physics

Submitted by: LAMANNA, Gianluca

Submitted on: 28 February 2014 10:22

Title: GPU for online processing in low-level trigger

Abstract content We describe a pilot project for the use of GPUs (Graphics processing units) in online triggering applications for high energy physics experiments.

General-purpose computing on GPUs is emerging as a new paradigm in several fields of science, although so far applications have been tailored to the specific strengths of such devices as accelerator in offline computation. With the steady reduction of GPU latencies, and the increase in link and memory throughput, the use of such devices for real-time applications in high-energy physics data acquisition and trigger systems is becoming ripe.

We will discuss in details the use of online parallel computing on GPU for synchronous low level trigger. We will show the results of two solution to reduce the data transmission latency: the first based on fast capture special driver and the second based on direct GPU communication using NaNet, a multi-standard, FPGA-based, low-latency, PCIe network interface card with GPUDirect capabilities. We will present preliminary results on a first field test in the CERN NA62 experiment.

This study is done in the framework of GAP (GPU application project), a wider project intended to study the use of GPUs in real-time applications.

Summary

Primary Authors: LAMANNA, Gianluca (Sezione di Pisa (IT)) gianluca.lamanna@cern.ch

Co-authors: SOZZI, Marco (Sezione di Pisa (IT)) marco.sozzi@cern.ch PIANDANI, Roberto (Sezione di Pisa (IT)) roberto.piandani@cern.ch FANTECHI, Riccardo (INFN - Sezione di Pisa) fantechi@pi.infn.it SANTONI, Cristiano (Universita e INFN (IT)) cristiano.santoni@cern.ch PICCINI, Mauro (INFN - Sezione di Perugia (IT)) mauro.piccini@cern.ch MESSINA, Andrea (CERN) andrea.messina@cern.ch BAUCE, Matteo (Universita e INFN, Roma I (IT)) matteo.bauce@cern.ch LONARDO, Alessandro (Universita e INFN, Roma I (IT)) alessandro.lonardo@cern.ch VICINI, Piero (INFN Rome Section) piero.vicini@roma1.infn.it BIAGIONI, Andrea (INFN) andrea.biagioni@roma1.infn.it FIORINI, Massimiliano (Universita di Ferrara (IT)) massimiliano.fiorini@cern.ch COTTA RAMUSINO, Angelo (Universita di Ferrara (IT)) angelo.cotta.ramusino@cern.ch CHIOZZI, Stefano (Universita di Ferrara (IT)) chiozzi@fe.infn.it GIANOLI, Alberto (Universita di Ferrara (IT)) alberto.gianoli@cern.ch Dr. NERI, Ilaria (University of Ferrara) ilaria.neri@fe.infn.it Dr. PAOLUCCI, Pier Stanislao (INFN Roma) pier.paolucci@roma1.infn.it Dr. SIMULA, Francesco (INFN Roma) francesco.simula@roma1.infn.it

Abstract presenters: LAMANNA, Gianluca

Track classification: Data-processing: 3b) Trigger and Data Acquisition Systems Data-processing: 3c) Embedded software

Presentation type: Oral

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