traccc 1.0.0

ATLAS Technology Choice Release

This version of the code was used to produce the final numbers for the ATLAS EFTracking technology choice report.

What's Changed

• Track EDM Unification, main branch (2025.11.04.) by @krasznaa in #1178
• Fix invalid state containers in CUDA examples by @stephenswat in #1182
• Add post-finding track efficiency output by @stephenswat in #1183
• feat: Update to detray v0.104.1 by @niermann999 in #1166
• fix: Several small bugs in the KF by @niermann999 in #1180
• feat: device logging by @niermann999 in #1179
• Switch Kálmán filters to use Joseph form by @stephenswat in #1048
• ref: Reduce default chi2 max by @niermann999 in #1181
• Remove benchmarking code base by @stephenswat in #1190
• SoA Measurements, main branch (2025.11.12.) by @krasznaa in #1189
• ref: Additional error handling in the KF for negative variances and smoothed chi2 by @niermann999 in #1184
• fix: kalman actor error logic by @niermann999 in #1191
• fix: switch to default navigator in smoother and update detray to v0.105.1 by @niermann999 in #1192
• fix: Refined hole counting in KF by @niermann999 in #1109
• Read measurement dimensionality from detector by @stephenswat in #1187
• Update track covariance estimation logic by @stephenswat in #1167
• Save disk space in CUDA CI job by @stephenswat in #1199
• Remove Kokkos and Futhark code bases by @stephenswat in #1198
• Measurement Sorting Fix, main branch (2025.11.19.) by @krasznaa in #1203
• Additional CUDA Warnings, main branch (2025.11.17.) by @krasznaa in #1200
• ref: Extend the Kalman error statistics to the seeding example by @niermann999 in #1206
• feat: update to detray v0.106.0 by @niermann999 in #1210
• fix: the indices in the host track parameter estimation by @niermann999 in #1205
• feat: Update to detray v0.107.0 by @niermann999 in #1214
• Add measurement voting ambiguity resolution by @stephenswat in #992
• feat: update to detray v0.108.0 by @niermann999 in #1218
• fix: Enable the momentum aborter in the Kalman Fitter by @niermann999 in #1213
• fix: use direct navigation by @niermann999 in #1216
• fix: Use new ACTS JSON header location by @paulgessinger in #1215
• feat: Build detectors with custom metadata by @niermann999 in #1209
• ref: Use the pion hypothesis by default by @niermann999 in #1219
• Implement MBF smoother by @stephenswat in #1220

Full Changelog: v0.26.1...v1.0.0

traccc 0.26.1

Full Changelog: v0.26.0...v0.26.1

traccc 0.26.0

What's Changed

• exp: simplify measurement access by @niermann999 in #1168
• Update ACTS to version 44.0.1 by @stephenswat in #1169
• Add event trimmer Python tool to extras by @stephenswat in #1170
• Adding host inhomogeneous b-field for Alpaka by @StewMH in #1172
• Add CLI options to control logging verbosity by @stephenswat in #897
• fix: Number of truth particles in finding performance writer by @niermann999 in #1173
• fix: add parameter resetter to CKF by @niermann999 in #1174
• Add CKF cut on number of consecutive holes by @stephenswat in #1155
• fix: Add template parameter for clang by @StewMH in #1175
• Add parameter for HS truth particle selection by @paradajzblond in #1139

New Contributors

• @paradajzblond made their first contribution in #1139

Full Changelog: v0.25.0...v0.26.0

traccc 0.25.0

What's Changed

• VecMem Update, main branch (2025.10.01.) by @krasznaa in #1164
• Update detray to v0.103.0 by @stephenswat in #1148
• Bugfix and change to the cluster_diameter calculation by @m-brettell in #1165
• Add Cluster Index, main branch (2025.09.25.) by @krasznaa in #1161
• Integration of the GBTS kernels in traccc by @m-brettell in #1150
• Write comments on ambiguity resolution algorithms by @beomki-yeo in #1158

New Contributors

• @m-brettell made their first contribution in #1165

Full Changelog: v0.24.0...v0.25.0

traccc 0.24.0

What's Changed

• Fix oneDPL Usage, main branch (2025.06.13.) by @krasznaa in #1016
• Change measurment id type from std::size_t to unsigned int by @beomki-yeo in #1015
• Make B-field converter delimiter configurable by @stephenswat in #1019
• Select first rather than last smoothed parameter by @stephenswat in #1024
• Reduce type unrolling scope to reduce divergence by @stephenswat in #1020
• Diagnostic Pragma Cleanup, main branch (2025.06.17.) by @krasznaa in #1021
• Device Cluster Reconstruction, main branch (2025.06.17.) by @krasznaa in #1023
• Alpaka Templating Rewrite, main branch (2025.06.18.) by @krasznaa in #1026
• Update detray to version 0.99.0 by @stephenswat in #1025
• (CUDA) Templating Rewrite, main branch (2025.06.20.) by @krasznaa in #1029
• Fix CUDA kernel launch parameter bug in fitter by @stephenswat in #1032
• CUDA Fix, main branch (2025.06.24.) by @krasznaa in #1035
• Alpaka Fix, main branch (2025.06.24.) by @krasznaa in #1034
• Inhomogeneous Magnetic Field, main branch (2025.06.23.) by @krasznaa in #1033
• Update CUDA propagation and fit kernel launch by @stephenswat in #1037
• Implement new doublet cut based on triplet radii by @stephenswat in #1036
• Inhomogeneous Magnetic Field Examples, main branch (2025.06.25.) by @krasznaa in #1042
• Deduplicate sorting key filling CUDA kernels by @stephenswat in #1046
• Add clamping to magnetic field types by @stephenswat in #1049
• Deduplicate measurements of track candidate container in the tests by @beomki-yeo in #1047
• Switch from synchronized propagator to default by @stephenswat in #1038
• Add additional information to candidate links by @stephenswat in #1043
• Use a map to find the unique measurement ID by @beomki-yeo in #1050
• Update algebra plugins to v0.28.0 by @stephenswat in #1039
• Inhomogeneous Magnetic Field Throughput Applications, main branch (2025.07.02.) by @krasznaa in #1051
• Use inhomogeneous magnetic field in benchmark by @stephenswat in #1044
• Update detray to v0.100.0 by @stephenswat in #1027
• Update covfie to v0.15.2 by @stephenswat in #1059
• Update detray to v0.101.0 by @stephenswat in #1062
• Fix recent issues in the commit benchmark code by @stephenswat in #1061
• Alpaka: Asynchronous Alpaka by @CrossR in #1040
• Remove duplicate tracks in each CKF step by @stephenswat in #1041
• Reduce the block dimension for count_removable_tracks kernel by @beomki-yeo in #1054
• B-Field Rewrite / Cleanup, main branch (2025.07.10.) by @krasznaa in #1069
• Make find_valid_index not repeat the same index in the iteration by @beomki-yeo in #1070
• Honour subspaces in measurement creation by @stephenswat in #1066
• Remove exclusive_scan kernel in the greedy ambiguity resolver by @beomki-yeo in #1076
• CKF Track Deduplication, main branch (2025.07.15.) by @krasznaa in #1078
• Alpaka: README Table Update + Add CUDA/HIP Presets by @CrossR in #1073
• CUDA Texture B-Field, main branch (2025.07.11.) by @krasznaa in #1071
• Version Update, main branch (2025.07.14.) by @krasznaa in #1072
• Add truth finding cuts and efficiency output by @stephenswat in #1077
• Remove the unused variables by @beomki-yeo in #1086
• Add black-box cut optimisation tool to extras by @stephenswat in #1080
• Seeding Throughput, main branch (2025.07.24.) by @krasznaa in #1090
• Move insertion mutex code to dedicated header by @stephenswat in #1092
• CMDL Options Improvements, main branch (2025.07.24.) by @krasznaa in #1088
• Add pre-commit check for duplicate CUDA files by @stephenswat in #1045
• Fix bugs in the greedy resolver by @beomki-yeo in #1083
• Optimize remove_tracks by skipping unnecessary iteration by @beomki-yeo in #1093
• Reduce the unnecessary iterations in remove_tracks by @beomki-yeo in #1095
• Deduplicate max seeds per middle SP parameter by @stephenswat in #1089
• Reduce the number of atomic Add operations by @beomki-yeo in #1102
• ITk Throughput, main branch (2025.07.27.) by @krasznaa in #1103
• Various seeding performance writer improvements by @stephenswat in #1104
• Embed bottom and middle spacepoint in triplet by @stephenswat in #1097
• Optimize the dimension of scanning kernels by @beomki-yeo in #1107
• Alpaka: Parallel Algorithm Unification by @CrossR in #1074
• chore: Update clang-format to v18.1.8 by @paulgessinger in #1111
• Sort tracks per measurement for fast search by @beomki-yeo in #1110
• Replace the bubble sort with bitonic sort by @beomki-yeo in #1106
• Accelerate spacepoint IO code by @stephenswat in #1063
• Merge count_removable_tracks and remove_tracks by @beomki-yeo in #1114
• Shrink ODD seeding delta-r cut by @stephenswat in #1116
• Split up matching options for seeds and tracks by @stephenswat in #1115
• Disable combinatorics in CKF by default by @stephenswat in #1118
• Add track purity and completeness to ROOT output by @stephenswat in #1119
• Reset CKF parameters in toy detector tests by @stephenswat in #1120
• Remove unnecessary reset of is_updated_buffer by @beomki-yeo in #1123
• Add maximum Z distance cut in seeding by @stephenswat in #1091
• VecMem 1.19.0, main branch (2025.08.12.) by @krasznaa in #1124
• Optimize rearrange tracks by @beomki-yeo in #1122
• Enable fast math library in CUDA compilation by @stephenswat in #1064
• Constant Detector, main branch (2025.08.15.) by @krasznaa in #1127
• Track Fit/State SoA, main branch (2025.08.05.) by @krasznaa in #1112
• Improvements to track finding and seeding CLI by @stephenswat in #1105
• Update detray to version 0.102.0 by @stephenswat in #1129
• Throughput Updates, main branch (2025.08.18.) by @krasznaa in #1130
• Remove the iteration in deduplication by @beomki-yeo in #1126
• Fix and rework Kálmán filter p and pT cuts by @stephenswat in #1128
• Adjust propagation kernel launch bounds by @stephenswat in #1131
• Replace deprecated thrust::identity type by @stephenswat in #1133
• Remove reset_status kernel by @beomki-yeo in #1134
• Implement visitor for polymorphic magnetic field by @stephenswat in #1065
• Optimize gather_tracks kernel by @beomki-yeo in #1125
• Clean up unused geometry IO code by @stephenswat in #1135
• Merge find_max_shared and gather_tracks kernel by @beomki-yeo in #1136
• In...

traccc 0.23.0

What's Changed

• VecMem 1.18.0 Update, main branch (2025.05.30.) by @krasznaa in #996
• Find Best Host Measurements, main branch (2025.05.31.) by @krasznaa in #1000
• Refactor Kálmán fitter forward-backward logic by @stephenswat in #991
• CUDA Ambiguity Clang Fixes, main branch (2025.05.30.) by @krasznaa in #995
• Add loggers to performance writer classes by @stephenswat in #1004
• Add Compute Capability benchmarks to extras by @stephenswat in #1003
• Patch performance writer seeing invalid seed by @stephenswat in #1005
• Split KF kernel into forward and backward steps by @stephenswat in #994
• Compile fitter only in direction-matching kernel by @stephenswat in #1006
• Track Candidate SoA, main branch (2025.05.11.) by @krasznaa in #971
• Add Track Fit to SYCL Throughput Measurements, main branch (2025.06.06.) by @krasznaa in #1008
• Fix traccc::full_chain_algorithm Copying, main branch (2025.06.06.) by @krasznaa in #1007
• Reduce iterations in CUDA greedy resolver by @beomki-yeo in #998
• Fix the soa comparator typo in seq_example_cuda by @beomki-yeo in #1012
• Synchronize threads to update shared measurements correctly by @beomki-yeo in #1014

Full Changelog: v0.22.0...v0.23.0

traccc 0.22.0

What's Changed

• Alpaka: Finding + Fitting Algorithms (PR 2 of 3) by @CrossR in #925
• Alpaka: Fitting Examples (PR 3 of 3) by @CrossR in #935
• Add pvalue in track_quality by @beomki-yeo in #936
• Migrate fitting kernels to use a payload struct by @stephenswat in #938
• Remove cluster link in measurement edm by @beomki-yeo in #939
• Refactor B-field and detector typedefs by @stephenswat in #942
• ref: detray includes by @niermann999 in #947
• fix: IO sorting by @niermann999 in #946
• Improve Python benchmarking tools by @stephenswat in #952
• Add compatibility with CUDA 12.8 by @stephenswat in #919
• SonarCloud VSCode Setup, main branch (2025.04.29.) by @krasznaa in #953
• (Further) CUDA Fixes, main branch (2025.04.29.) by @krasznaa in #954
• Acts v39.0.0, main branch (2025.04.30.) by @krasznaa in #955
• Update to detray version 0.95.0 by @niermann999 in #950
• Renew greedy ambiguity solver by @beomki-yeo in #923
• New CPU example to demonstrate the context-aware transform store usage by @tsulaiav in #937
• make sycl measurement sorting algo interface match cuda's by @flg in #961
• VecMem 1.16.0 Update, main branch (2025.05.05.) by @krasznaa in #962
• Accelerate and fix bug in performance code by @stephenswat in #956
• Simplified Seed Selection, main branch (2025.05.05.) by @krasznaa in #964
• feat: Update to detray v0.96.0 by @niermann999 in #969
• CUDA VSCode Debugging, main branch (2025.05.11.) by @krasznaa in #972
• SYCL Fixes, main branch (2025.04.30.) by @krasznaa in #957
• Use pvalue for resolver by @beomki-yeo in #941
• Clean Device Track Finding, main branch (2025.05.08.) by @krasznaa in #970
• Strip Spacepoints, main branch (2025.05.05.) by @krasznaa in #965
• SYCL Test Cleanup, main branch (2025.05.12.) by @krasznaa in #973
• Make Greedy solver handel duplicate measurements in patterns by @beomki-yeo in #976
• Refactor the cell data initialization in test by @beomki-yeo in #977
• Alpaka: Vecmem Interface by @CrossR in #960
• Do not store links which will be rejected by @fiedlerp in #933
• VecMem 1.17.0 Update, main branch (2025.05.15.) by @krasznaa in #978
• CMake 4 Updates, main branch (2025.05.13.) by @krasznaa in #974
• Add translation to silicon detector description by @stephenswat in #982
• Improve memory usage in track finding postamble by @stephenswat in #908
• ref: Add more assertions by @niermann999 in #944
• Keep states ordered by quality in CKF by @stephenswat in #929
• Increment version number to v0.22.0 by @stephenswat in #990
• Fix use of per-seed branching in track finding by @stephenswat in #988
• CUDA greedy resolver by @beomki-yeo in #943
• Track Finding Tweaks, main branch (2025.05.21.) by @krasznaa in #984
• VSCode Host Debugging Config, main branch (2025.05.20.) by @krasznaa in #981
• Add cluster diameter computation to clustering by @stephenswat in #983
• Reduce CKF branching factor from 10 to 2 by @stephenswat in #989
• feat: update to detray version 0.97.0 by @niermann999 in #948
• ref: Update to detray version 0.98.0 by @niermann999 in #993

New Contributors

• @tsulaiav made their first contribution in #937

Full Changelog: v0.21.0...v0.22.0

traccc 0.21.0

What's Changed

• Update detray to v0.90.0 by @beomki-yeo in #907
• Fix the CKF-related bugs that break the continuous benchmark by @beomki-yeo in #909
• Fix: uninitialized value when the first step is skipped by @fiedlerp in #911
• Update detray to v0.92.0 by @beomki-yeo in #914
• Fix CPU version of hole counting by @fiedlerp in #915
• Sort truth track measurements by time by @stephenswat in #910
• Fix bug in seed selection in track finder by @stephenswat in #916
• Make CKF types and initializers more readable by @stephenswat in #921
• Alpaka: Algorithm Updates (PR 1 of 3) by @CrossR in #918
• Use direct navigator for Backward Filter by @beomki-yeo in #917
• Fix TRACCC_USE_SPACK_LIBS CMake variable by @stephenswat in #920
• Remove Jacobian and predicted track parameters in track_state by @beomki-yeo in #926
• Accelerate and update commit benchmarking script by @stephenswat in #927
• Allocate CKF links in a flat allocation by @stephenswat in #924
• Update detray external to v0.94.0 by @beomki-yeo in #928
• Allow event data reader to work on Geant4 data by @stephenswat in #860
• Update Project Version to v0.21.0 by @beomki-yeo in #931

New Contributors

• @fiedlerp made their first contribution in #911

Full Changelog: v0.20.0...v0.21.0

traccc 0.20.0

What's Changed

• Use caching allocators in Thrust by @stephenswat in #835
• Increase collection comparison performance by @stephenswat in #836
• Fix missing typename in sanity checks by @stephenswat in #839
• Change the default smoother to two-filters smoother by @beomki-yeo in #842
• Asynchronous Thrust, main branch (2025.02.05.) by @krasznaa in #843
• Make traccc::alpaka executables work in pure C++ by @StewMH in #832
• Configuration Updates, main branch (2025.02.07.) by @krasznaa in #845
• ref: benchmark toy detector config by @niermann999 in #714
• Seed Parameter Estimation Fix, main branch (2025.02.10.) by @krasznaa in #848
• Git Ignore Update, main branch (2025.02.10.) by @krasznaa in #850
• Fix dangerous usage of std::forward by @stephenswat in #864
• Fix the bug in getting the first smoother state by @beomki-yeo in #863
• Divide default propagation options by proper units by @beomki-yeo in #868
• Return error state if PDG number is unknown by @stephenswat in #861
• ref: Use traccc unit and constant definitions everywhere by @niermann999 in #866
• ref: Cleanup detray includes by @niermann999 in #865
• Minor fixes to the track building kernel by @stephenswat in #859
• Add pre-commit job to check quote includes by @stephenswat in #871
• ref: update detray to v0.88.1 by @niermann999 in #841
• Update covfie version to work for HIP by @StewMH in #873
• Add failure propagation to Kálmán filter code by @stephenswat in #862
• ref: Measure wall time in multithreaded benchmark and reduce number of events by @niermann999 in #872
• fix: Provide global default for the custom scalar type by @niermann999 in #875
• Record track quality to the CKF tracks by @beomki-yeo in #844
• Fix the benchmark temporarily by @beomki-yeo in #879
• Undo some changes from #844 by @beomki-yeo in #881
• Add B-field conversion and generation tools by @stephenswat in #877
• ref: Remove detray unit types by @niermann999 in #876
• ref: Harmonize track parameters types by @niermann999 in #867
• VecMem 1.14.0, main branch (2025.02.21.) by @krasznaa in #887
• Fix edge case detection in CPU track finding by @stephenswat in #884
• Set particle hypothesis in Kálmán fitter by @stephenswat in #885
• Determine succesfully fitted tracks by @beomki-yeo in #869
• Exit with an error if the first smoothed state is invalid by @beomki-yeo in #882
• Add pre-commit hook to check for detray units by @stephenswat in #883
• Add Spack environment specification by @stephenswat in #838
• Run the track parameter assertions after updating the track parameters by @beomki-yeo in #888
• Check if all tracks are successfully fitted in the tests by @beomki-yeo in #889
• Add logging infrastructure to all algorithms by @stephenswat in #824
• Remove some unused executables by @stephenswat in #894
• Move [[nodiscard]] and [[maybe_unused]] in front of host/device declarations by @StewMH in #892
• Fix SFINAE bug in container base type by @stephenswat in #890
• Logging Tweaks, main branch (2025.02.27.) by @krasznaa in #898
• Protect against negative chi-square in updater by @stephenswat in #895
• SoA Spacepoints, main branch (2025.02.19.) by @krasznaa in #878
• Remove placement from detector description which is not necessary by @beomki-yeo in #899
• Improve assertions in Kálmán filter and fitter by @stephenswat in #900
• Use the default configs for the CKF & KF tests by @beomki-yeo in #896
• Remove inconsistent CKF options by @beomki-yeo in #904
• Fix rocprim version to 6.1.1 by @StewMH in #905
• Add pre-commit checks for whitespace by @stephenswat in #903

Full Changelog: v0.19.0...v0.20.0

traccc 0.19.0

What's Changed

• Measurement Comparison Fix, main branch (2025.01.07.) by @krasznaa in #807
• Track Finding Cleanup, main branch (2025.01.07.) by @krasznaa in #808
• Simulation Tweaks, main branch (2025.01.08.) by @krasznaa in #809
• Thread ID Cleanup, main branch (2025.01.09.) by @krasznaa in #810
• SYCL Track Finding, main branch (2025.01.09.) by @krasznaa in #811
• SYCL Track Finding in the Example Executables, main branch (2025.01.09.) by @krasznaa in #812
• Update ACTS to v38.2.0 by @stephenswat in #813
• ref: Update to detray version 0.87.0 by @niermann999 in #805
• Add traccc tuple and pair types by @stephenswat in #814
• Remove unused argument handling code by @stephenswat in #817
• Remove Thrust from the core and common libraries by @stephenswat in #815
• Remove Thrust pair type from prefix sum code by @stephenswat in #819
• Add tests for momentum resolution validation by @beomki-yeo in #820
• Update NVIDIA CCCL to v2.7.0 by @stephenswat in #816
• Fix global counter conversion issue in Kokkos by @stephenswat in #823
• Fix several SYCL, OneDPL, and Kokkos build issues by @stephenswat in #821
• Add structured configuration printing by @stephenswat in #822
• Fix zero-track edge case bug in CUDA track finding by @stephenswat in #825
• Remove obsolete Thrust functionality check by @stephenswat in #826
• Fix broken assertion in prune tracks kernel by @stephenswat in #828
• Add deterministic processing mode to examples by @stephenswat in #830
• Version Update, main branch (2025.01.29.) by @krasznaa in #827
• Make Thrust a private dependency of the CUDA library by @stephenswat in #829
• Make the resolution matching condition tighter by @beomki-yeo in #834
• Add code for per-commit benchmarking by @stephenswat in #831
• Use configuration types as SSOT for defaults by @stephenswat in #833

Full Changelog: v0.18.0...v0.19.0