Add grid_constant qualifier to CUDA kernels

[stephenswat]

A recent CUDA update adds the __grid_constant__ qualifier which can be added to kernel arguments which guarantees that they remain in constant memory rather than being moved into local memory.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
50.0% 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
	b80f811	6089e80	Delta	b80f811	6089e80
propagate_to_next_surface	11.29 ms	11.29 ms	0.0%	2.76	2.76
fit_forward	4.63 ms	4.78 ms	3.3%	3.71	3.69
fit_backward	2.65 ms	2.66 ms	0.5%	2.78	2.78
find_tracks	1.31 ms	1.30 ms	-0.6%	1.79	1.79
ccl_kernel	827.47 μs	825.60 μs	-0.2%	1.37	1.37
count_doublets	636.58 μs	635.59 μs	-0.2%	1.61	1.61
count_triplets	589.61 μs	590.70 μs	0.2%	1.02	1.02
find_doublets	447.03 μs	449.96 μs	0.7%	3.08	3.08
Thrust::sort	394.78 μs	395.07 μs	0.1%	5.96	5.96
find_triplets	172.68 μs	173.69 μs	0.6%	1.31	1.31
select_seeds	53.72 μs	53.27 μs	-0.8%	1.34	1.34
remove_duplicates	45.37 μs	45.82 μs	1.0%	15.09	14.96
fit_prelude	26.45 μs	26.44 μs	-0.1%	11.05	11.04
populate_grid	23.36 μs	23.35 μs	-0.0%	1.22	1.22
count_grid_capacities	22.08 μs	22.13 μs	0.2%	1.22	1.22
unknown	20.61 μs	20.56 μs	-0.2%	2.25	2.25
apply_interaction	17.74 μs	17.71 μs	-0.2%	5.59	5.60
update_triplet_weights	15.21 μs	15.05 μs	-1.1%	1.27	1.27
estimate_track_params	14.39 μs	14.36 μs	-0.2%	2.15	2.15
form_spacepoints	12.30 μs	12.24 μs	-0.5%	1.48	1.48
fill_finding_propagation_sort_keys	11.55 μs	11.56 μs	0.0%	6.08	6.08
build_tracks	9.34 μs	9.34 μs	0.1%	7.49	7.50
reduce_triplet_counts	6.30 μs	6.30 μs	0.1%	3.08	3.08
fill_finding_duplicate_removal_sort_keys	3.82 μs	3.82 μs	-0.0%	19.73	19.71
make_barcode_sequence	1.01 μs	1.02 μs	0.4%	3.83	3.83
fill_fitting_sort_keys	317.96 ns	319.68 ns	0.5%	11.25	11.23
fill_prefix_sum	171.90 ns	171.92 ns	0.0%	341.30	341.30
Total	23.23 ms	23.39 ms	0.7%	2.86	2.86

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.