feat: Skip the Kalman filter on the first CKF step

[niermann999]

No need to run the KF on the first measurement, since it is the initial information that the KF is started with

[stephenswat]

Physics performance summary

Here is a summary of the physics performance effects of this PR. Command used:

traccc_seeding_example_cuda --input-directory=/data/Acts/odd-simulations-20240506/geant4_ttbar_mu200 --digitization-file=geometries/odd/odd-digi-geometric-config.json --conditions-file=geometries/odd/odd-digi-geometric-config.json --detector-file=geometries/odd/odd-detray_geometry_detray.json --grid-file=geometries/odd/odd-detray_surface_grids_detray.json --material-file=geometries/odd/odd-detray_material_detray.json --input-events=10 --use-acts-geom-source=on --check-performance --truth-finding-min-track-candidates=5 --truth-finding-min-pt=1.0 --truth-finding-min-z=-150 --truth-finding-max-z=150 --truth-finding-max-r=10 --seed-matching-ratio=0.99 --track-matching-ratio=0.5 --track-candidates-range=5:100 --seedfinder-vertex-range=-150:150

Seeding performance

Total number of seeds went from 298341 to 298341 (+0.0%)

Seeding plots

Track finding performance

Total number of found tracks went from 50211 to 50211 (+0.0%)

Finding plots

Track fitting performance

Fitting plots

Seeding to track finding relative performance

Seeding to track finding plots

Note

This is an automated message produced on the explicit request of a human being.

[sonarqubecloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[stephenswat]

Performance summary

Here is a summary of the performance effects of this PR:

Graphical

Tabular

Kernel	Reciprocal Throughput			Parallelism
	bd18c46	784e970	Delta	bd18c46	784e970
propagate_to_next_surface	5.80 ms	5.80 ms	-0.0%	4.33	4.34
find_tracks	1.76 ms	1.76 ms	-0.5%	1.83	1.67
count_doublets	816.16 μs	809.72 μs	-0.8%	1.61	1.61
ccl_kernel	592.59 μs	593.12 μs	0.1%	1.71	1.71
count_triplets	568.65 μs	568.06 μs	-0.1%	1.02	1.02
find_doublets	534.08 μs	533.39 μs	-0.1%	3.08	3.08
Thrust::sort	379.96 μs	378.51 μs	-0.4%	7.32	7.32
find_triplets	169.56 μs	169.47 μs	-0.1%	1.32	1.31
estimate_track_params	146.49 μs	146.71 μs	0.2%	2.68	2.68
build_tracks	123.82 μs	123.39 μs	-0.3%	3.71	3.71
select_seeds	59.83 μs	60.01 μs	0.3%	1.34	1.34
populate_grid	24.02 μs	23.97 μs	-0.2%	1.22	1.22
count_grid_capacities	22.21 μs	22.15 μs	-0.3%	1.22	1.22
remove_duplicates	20.12 μs	20.13 μs	0.0%	25.56	25.54
fill_sorted_measurements	17.94 μs	17.60 μs	-1.9%	1.13	1.13
update_triplet_weights	16.47 μs	16.33 μs	-0.9%	1.27	1.27
fill_finding_propagation_sort_keys	9.65 μs	9.62 μs	-0.3%	7.37	7.55
form_spacepoints	8.63 μs	8.52 μs	-1.2%	1.48	1.48
reduce_triplet_counts	5.66 μs	5.70 μs	0.7%	3.08	3.08
unknown	5.08 μs	5.07 μs	-0.4%	4.27	4.29
fill_finding_duplicate_removal_sort_keys	1.59 μs	1.58 μs	-1.0%	38.82	37.74
Total	11.09 ms	11.07 ms	-0.2%	3.39	3.37

Important

All metrics in this report are given as reciprocal throughput, not as wallclock runtime.

Note

This is an automated message produced upon the explicit request of a human being.