Software performance of the ATLAS track reconstruction for LHC Run 3

The ATLAS Collaboration

doi:10.1007/s41781-023-00111-y

Software performance of the ATLAS track reconstruction for LHC Run 3

The ATLAS Collaboration

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Abstract

Charged particle reconstruction in the presence of many simultaneous proton–proton (pp) collisions in the LHC is a challenging task for the ATLAS experiment’s reconstruction software due to the combinatorial complexity. This paper describes the major changes made to adapt the software to reconstruct high-activity collisions with an average of 50 or more simultaneous pp interactions per bunch crossing (pile-up) promptly using the available computing resources. The performance of the key components of the track reconstruction chain and its dependence on pile-up are evaluated, and the improvement achieved compared to the previous software version is quantified. For events with an average of 60pp collisions per bunch crossing, the updated track reconstruction is twice as fast as the previous version, without significant reduction in reconstruction efficiency and while reducing the rate of combinatorial fake tracks by more than a factor two.

Original language	English
Article number	9
Pages (from-to)	1-32
Number of pages	32
Journal	Computing and Software for Big Science
Volume	8
Issue number	1
DOIs	https://doi.org/10.1007/s41781-023-00111-y
Publication status	Published - Dec 2024
Externally published	Yes

Bibliographical note

Copyright the Author(s) 2024. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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10.1007/s41781-023-00111-yLicence: CC BY

Publisher version (open access)Final published version, 3.9 MBLicence: CC BY

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@article{7c34bfbabf82431eb0fb2ff990fb0f43,

title = "Software performance of the ATLAS track reconstruction for LHC Run 3",

abstract = "Charged particle reconstruction in the presence of many simultaneous proton–proton (pp) collisions in the LHC is a challenging task for the ATLAS experiment{\textquoteright}s reconstruction software due to the combinatorial complexity. This paper describes the major changes made to adapt the software to reconstruct high-activity collisions with an average of 50 or more simultaneous pp interactions per bunch crossing (pile-up) promptly using the available computing resources. The performance of the key components of the track reconstruction chain and its dependence on pile-up are evaluated, and the improvement achieved compared to the previous software version is quantified. For events with an average of 60pp collisions per bunch crossing, the updated track reconstruction is twice as fast as the previous version, without significant reduction in reconstruction efficiency and while reducing the rate of combinatorial fake tracks by more than a factor two.",

author = "The ATLAS Collaboration and G. Aad and B. Abbott and K. Abeling and Abicht, {N. J.} and Abidi, {S. H.} and A. Aboulhorma and H. Abramowicz and H. Abreu and Y. Abulaiti and Acharya, {B. S.} and Bourdarios, {C. Adam} and L. Adamczyk and L. Adamek and Addepalli, {S. V.} and Addison, {M. J.} and J. Adelman and A. Adiguzel and T. Adye and Affolder, {A. A.} and Y. Afik and Agaras, {M. N.} and J. Agarwala and A. Aggarwal and C. Agheorghiesei and A. Ahmad and F. Ahmadov and Ahmed, {W. S.} and S. Ahuja and X. Ai and G. Aielli and A. Aikot and Tamlihat, {M. Ait} and B. Aitbenchikh and I. Aizenberg and M. Akbiyik and {\AA}kesson, {T. P.A.} and Akimov, {A. V.} and D. Akiyama and Akolkar, {N. N.} and Khoury, {K. Al} and Alberghi, {G. L.} and J. Albert and P. Albicocco and Albouy, {G. L.} and S. Alderweireldt and M. Aleksa and Aleksandrov, {I. N.} and C. Alexa and T. Alexopoulos and F. Alfonsi and M. Algren and M. Alhroob and B. Ali and Ali, {H. M.J.} and S. Ali and Alibocus, {S. W.} and M. Aliev and G. Alimonti and W. Alkakhi and C. Allaire and Allbrooke, {B. M.M.} and Allen, {J. F.} and Flores, {C. A.Allendes} and Allport, {P. P.} and A. Aloisio and F. Alonso and C. Alpigiani and Estevez, {M. Alvarez} and Fernandez, {A. Alvarez} and Cardoso, {M. Alves} and Alviggi, {M. G.} and M. Aly and Coutinho, {Y. Amaral} and A. Ambler and C. Amelung and M. Amerl and Ames, {C. G.} and D. Amidei and Santos, {S. P.Amor Dos} and Amos, {K. R.} and V. Ananiev and C. Anastopoulos and T. Andeen and Anders, {J. K.} and Andrean, {S. Y.} and A. Andreazza and S. Angelidakis and A. Angerami and Anisenkov, {A. V.} and A. Annovi and C. Antel and Anthony, {M. T.} and E. Antipov and M. Antonelli and F. Anulli and M. Aoki and T. Aoki and Pozo, {J. A.Aparisi} and Aparo, {M. A.} and Bella, {L. Aperio} and C. Appelt and A. Apyan and N. Aranzabal and Val, {S. J.Arbiol} and C. Arcangeletti and Arce, {A. T.H.} and E. Arena and Arguin, {J. F.} and S. Argyropoulos and Arling, {J. H.} and O. Arnaez and H. Arnold and G. Artoni and H. Asada and K. Asai and S. Asai and Asbah, {N. A.} and J. Assahsah and K. Assamagan and R. Astalos and S. Atashi and Atkin, {R. J.} and M. Atkinson and H. Atmani and Atmasiddha, {P. A.} and K. Augsten and S. Auricchio and Auriol, {A. D.} and Austrup, {V. A.} and G. Avolio and K. Axiotis and G. Azuelos and D. Babal and H. Bachacou and K. Bachas and A. Bachiu and F. Backman and A. Badea and P. Bagnaia and M. Bahmani and Bailey, {A. J.} and Bailey, {V. R.} and Baines, {J. T.} and L. Baines and Baker, {O. K.} and E. Bakos and Gupta, {D. Bakshi} and V. Balakrishnan and R. Balasubramanian and Baldin, {E. M.} and P. Balek and E. Ballabene and F. Balli and Baltes, {L. M.} and Balunas, {W. K.} and J. Balz and E. Banas and M. Bandieramonte and A. Bandyopadhyay and S. Bansal and L. Barak and M. Barakat and Barberio, {E. L.} and D. Barberis and M. Barbero and Barel, {M. Z.} and Barends, {K. N.} and T. Barillari and Barisits, {M. S.} and T. Barklow and P. Baron and Moreno, {D. A.Baron} and A. Baroncelli and G. Barone and Barr, {A. J.} and Barr, {J. D.} and Navarro, {L. Barranco} and F. Barreiro and {da Costa}, {J. Barreiro Guimar{\~a}es} and U. Barron and Teixeira, {M. G.Barros} and S. Barsov and F. Bartels and R. Bartoldus and Barton, {A. E.} and P. Bartos and A. Basan and M. Baselga and A. Bassalat and Basso, {M. J.} and Basson, {C. R.} and Bates, {R. L.} and S. Batlamous and Batley, {J. R.} and B. Batool and M. Battaglia and D. Battulga and M. Bauce and M. Bauer and P. Bauer and Hurrell, {L. T.Bazzano} and Beacham, {J. B.} and T. Beau and Beaucamp, {J. Y.} and Beauchemin, {P. H.} and F. Becherer and P. Bechtle and Beck, {H. P.} and K. Becker and Beddall, {A. J.} and Bednyakov, {V. A.} and Bee, {C. P.} and Beemster, {L. J.} and Beermann, {T. A.} and M. Begalli and M. Begel and A. Behera and Behr, {J. K.} and Beirer, {J. F.} and F. Beisiegel and M. Belfkir and G. Bella and L. Bellagamba and A. Bellerive and P. Bellos and K. Beloborodov and D. Benchekroun and F. Bendebba and Y. Benhammou and M. Benoit and Bensinger, {J. R.} and S. Bentvelsen and L. Beresford and M. Beretta and Kuutmann, {E. Bergeaas} and N. Berger and B. Bergmann and J. Beringer and G. Bernardi and C. Bernius and Bernlochner, {F. U.} and F. Bernon and T. Berry and P. Berta and A. Berthold and Bertram, {I. A.} and S. Bethke and A. Betti and Bevan, {A. J.} and J. Shojaii",

note = "Copyright the Author(s) 2024. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.",

year = "2024",

month = dec,

doi = "10.1007/s41781-023-00111-y",

language = "English",

volume = "8",

pages = "1--32",

journal = "Computing and Software for Big Science",

issn = "2510-2044",

publisher = "Springer, Springer Nature",

number = "1",

}

TY - JOUR

T1 - Software performance of the ATLAS track reconstruction for LHC Run 3

AU - The ATLAS Collaboration

AU - Aad, G.

AU - Abbott, B.

AU - Abeling, K.

AU - Abicht, N. J.

AU - Abidi, S. H.

AU - Aboulhorma, A.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Bourdarios, C. Adam

AU - Adamczyk, L.

AU - Adamek, L.

AU - Addepalli, S. V.

AU - Addison, M. J.

AU - Adelman, J.

AU - Adiguzel, A.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agaras, M. N.

AU - Agarwala, J.

AU - Aggarwal, A.

AU - Agheorghiesei, C.

AU - Ahmad, A.

AU - Ahmadov, F.

AU - Ahmed, W. S.

AU - Ahuja, S.

AU - Ai, X.

AU - Aielli, G.

AU - Aikot, A.

AU - Tamlihat, M. Ait

AU - Aitbenchikh, B.

AU - Aizenberg, I.

AU - Akbiyik, M.

AU - Åkesson, T. P.A.

AU - Akimov, A. V.

AU - Akiyama, D.

AU - Akolkar, N. N.

AU - Khoury, K. Al

AU - Alberghi, G. L.

AU - Albert, J.

AU - Albicocco, P.

AU - Albouy, G. L.

AU - Alderweireldt, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexopoulos, T.

AU - Alfonsi, F.

AU - Algren, M.

AU - Alhroob, M.

AU - Ali, B.

AU - Ali, H. M.J.

AU - Ali, S.

AU - Alibocus, S. W.

AU - Aliev, M.

AU - Alimonti, G.

AU - Alkakhi, W.

AU - Allaire, C.

AU - Allbrooke, B. M.M.

AU - Allen, J. F.

AU - Flores, C. A.Allendes

AU - Allport, P. P.

AU - Aloisio, A.

AU - Alonso, F.

AU - Alpigiani, C.

AU - Estevez, M. Alvarez

AU - Fernandez, A. Alvarez

AU - Cardoso, M. Alves

AU - Alviggi, M. G.

AU - Aly, M.

AU - Coutinho, Y. Amaral

AU - Ambler, A.

AU - Amelung, C.

AU - Amerl, M.

AU - Ames, C. G.

AU - Amidei, D.

AU - Santos, S. P.Amor Dos

AU - Amos, K. R.

AU - Ananiev, V.

AU - Anastopoulos, C.

AU - Andeen, T.

AU - Anders, J. K.

AU - Andrean, S. Y.

AU - Andreazza, A.

AU - Angelidakis, S.

AU - Angerami, A.

AU - Anisenkov, A. V.

AU - Annovi, A.

AU - Antel, C.

AU - Anthony, M. T.

AU - Antipov, E.

AU - Antonelli, M.

AU - Anulli, F.

AU - Aoki, M.

AU - Aoki, T.

AU - Pozo, J. A.Aparisi

AU - Aparo, M. A.

AU - Bella, L. Aperio

AU - Appelt, C.

AU - Apyan, A.

AU - Aranzabal, N.

AU - Val, S. J.Arbiol

AU - Arcangeletti, C.

AU - Arce, A. T.H.

AU - Arena, E.

AU - Arguin, J. F.

AU - Argyropoulos, S.

AU - Arling, J. H.

AU - Arnaez, O.

AU - Arnold, H.

AU - Artoni, G.

AU - Asada, H.

AU - Asai, K.

AU - Asai, S.

AU - Asbah, N. A.

AU - Assahsah, J.

AU - Assamagan, K.

AU - Astalos, R.

AU - Atashi, S.

AU - Atkin, R. J.

AU - Atkinson, M.

AU - Atmani, H.

AU - Atmasiddha, P. A.

AU - Augsten, K.

AU - Auricchio, S.

AU - Auriol, A. D.

AU - Austrup, V. A.

AU - Avolio, G.

AU - Axiotis, K.

AU - Azuelos, G.

AU - Babal, D.

AU - Bachacou, H.

AU - Bachas, K.

AU - Bachiu, A.

AU - Backman, F.

AU - Badea, A.

AU - Bagnaia, P.

AU - Bahmani, M.

AU - Bailey, A. J.

AU - Bailey, V. R.

AU - Baines, J. T.

AU - Baines, L.

AU - Baker, O. K.

AU - Bakos, E.

AU - Gupta, D. Bakshi

AU - Balakrishnan, V.

AU - Balasubramanian, R.

AU - Baldin, E. M.

AU - Balek, P.

AU - Ballabene, E.

AU - Balli, F.

AU - Baltes, L. M.

AU - Balunas, W. K.

AU - Balz, J.

AU - Banas, E.

AU - Bandieramonte, M.

AU - Bandyopadhyay, A.

AU - Bansal, S.

AU - Barak, L.

AU - Barakat, M.

AU - Barberio, E. L.

AU - Barberis, D.

AU - Barbero, M.

AU - Barel, M. Z.

AU - Barends, K. N.

AU - Barillari, T.

AU - Barisits, M. S.

AU - Barklow, T.

AU - Baron, P.

AU - Moreno, D. A.Baron

AU - Baroncelli, A.

AU - Barone, G.

AU - Barr, A. J.

AU - Barr, J. D.

AU - Navarro, L. Barranco

AU - Barreiro, F.

AU - da Costa, J. Barreiro Guimarães

AU - Barron, U.

AU - Teixeira, M. G.Barros

AU - Barsov, S.

AU - Bartels, F.

AU - Bartoldus, R.

AU - Barton, A. E.

AU - Bartos, P.

AU - Basan, A.

AU - Baselga, M.

AU - Bassalat, A.

AU - Basso, M. J.

AU - Basson, C. R.

AU - Bates, R. L.

AU - Batlamous, S.

AU - Batley, J. R.

AU - Batool, B.

AU - Battaglia, M.

AU - Battulga, D.

AU - Bauce, M.

AU - Bauer, M.

AU - Bauer, P.

AU - Hurrell, L. T.Bazzano

AU - Beacham, J. B.

AU - Beau, T.

AU - Beaucamp, J. Y.

AU - Beauchemin, P. H.

AU - Becherer, F.

AU - Bechtle, P.

AU - Beck, H. P.

AU - Becker, K.

AU - Beddall, A. J.

AU - Bednyakov, V. A.

AU - Bee, C. P.

AU - Beemster, L. J.

AU - Beermann, T. A.

AU - Begalli, M.

AU - Begel, M.

AU - Behera, A.

AU - Behr, J. K.

AU - Beirer, J. F.

AU - Beisiegel, F.

AU - Belfkir, M.

AU - Bella, G.

AU - Bellagamba, L.

AU - Bellerive, A.

AU - Bellos, P.

AU - Beloborodov, K.

AU - Benchekroun, D.

AU - Bendebba, F.

AU - Benhammou, Y.

AU - Benoit, M.

AU - Bensinger, J. R.

AU - Bentvelsen, S.

AU - Beresford, L.

AU - Beretta, M.

AU - Kuutmann, E. Bergeaas

AU - Berger, N.

AU - Bergmann, B.

AU - Beringer, J.

AU - Bernardi, G.

AU - Bernius, C.

AU - Bernlochner, F. U.

AU - Bernon, F.

AU - Berry, T.

AU - Berta, P.

AU - Berthold, A.

AU - Bertram, I. A.

AU - Bethke, S.

AU - Betti, A.

AU - Bevan, A. J.

AU - Shojaii, J.

N1 - Copyright the Author(s) 2024. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2024/12

Y1 - 2024/12

N2 - Charged particle reconstruction in the presence of many simultaneous proton–proton (pp) collisions in the LHC is a challenging task for the ATLAS experiment’s reconstruction software due to the combinatorial complexity. This paper describes the major changes made to adapt the software to reconstruct high-activity collisions with an average of 50 or more simultaneous pp interactions per bunch crossing (pile-up) promptly using the available computing resources. The performance of the key components of the track reconstruction chain and its dependence on pile-up are evaluated, and the improvement achieved compared to the previous software version is quantified. For events with an average of 60pp collisions per bunch crossing, the updated track reconstruction is twice as fast as the previous version, without significant reduction in reconstruction efficiency and while reducing the rate of combinatorial fake tracks by more than a factor two.

AB - Charged particle reconstruction in the presence of many simultaneous proton–proton (pp) collisions in the LHC is a challenging task for the ATLAS experiment’s reconstruction software due to the combinatorial complexity. This paper describes the major changes made to adapt the software to reconstruct high-activity collisions with an average of 50 or more simultaneous pp interactions per bunch crossing (pile-up) promptly using the available computing resources. The performance of the key components of the track reconstruction chain and its dependence on pile-up are evaluated, and the improvement achieved compared to the previous software version is quantified. For events with an average of 60pp collisions per bunch crossing, the updated track reconstruction is twice as fast as the previous version, without significant reduction in reconstruction efficiency and while reducing the rate of combinatorial fake tracks by more than a factor two.

UR - http://www.scopus.com/inward/record.url?scp=85189516943&partnerID=8YFLogxK

U2 - 10.1007/s41781-023-00111-y

DO - 10.1007/s41781-023-00111-y

M3 - Article

AN - SCOPUS:85189516943

SN - 2510-2044

VL - 8

SP - 1

EP - 32

JO - Computing and Software for Big Science

JF - Computing and Software for Big Science

IS - 1

M1 - 9

ER -

Software performance of the ATLAS track reconstruction for LHC Run 3

Abstract

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