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@ARTICLE{Adinets:279938,
author = {Adinets, Andrey and Herten, Andreas and Kraus, Jiri and
Mertens, Marius C. and Pleiter, Dirk and Stockmanns, Tobias
and Wintz, Peter},
title = {{T}riplet {F}inder: {O}n the way to triggerless online
reconstruction with {GPU}s for the
$\overline{\mathrm{{P}}}\mathrm{{ANDA}}$ experiment},
journal = {Journal of computational science},
volume = {10},
issn = {1877-7503},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2015-07811},
pages = {317 - 326},
year = {2015},
abstract = {PANDA is a state-of-the-art hadron physics experiment
currently under construction at FAIR, Darmstadt. In order to
select events for offline analysis, PANDA will use a
software-based triggerless online reconstruction, performed
with a data rate of 200 GB/s.To process the raw data rate of
the detector in realtime, we design and implement a GPU
version of the Triplet Finder, a fast and robust first-stage
tracking algorithm able to reconstruct tracks with good
quality, specially designed for the Straw Tube Tracker
sub-detector of PANDA. We reduce the algorithmic complexity
of processing many hits together by splitting them into
bunches, which can be processed independently. We evaluate
different ways of processing bunches, GPU dynamic
parallelism being one of them. We also propose an optimized
technique for associating hits with reconstructed track
candidates.The evaluation of our GPU implementation
demonstrates that the Triplet Finder can process almost 6
Mhits/s on a single K20X GPU, making it a promising
algorithm for the online event filtering scheme of PANDA.},
cin = {JSC},
ddc = {004},
cid = {I:(DE-Juel1)JSC-20090406},
pnm = {513 - Supercomputer Facility (POF3-513)},
pid = {G:(DE-HGF)POF3-513},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000362134900034},
doi = {10.1016/j.jocs.2015.03.010},
url = {https://juser.fz-juelich.de/record/279938},
}