Add cuSPARSELt support #1200

rwgk · 2025-10-30T02:25:19Z

Bump cuda-pathfinder version to 1.3.3a0

Local manual testing passes with (site-packages, conda-ctk) x (linux-64, linux-aarch64, win-64) x (cu12, cu13) using the scheme shown here:

rwgk-win11.localdomain:~/col $ grep '^INFO test_.*: hdr_dir=' *.txt | tr -s '\\' '\\'
1sp_1lx64_cu12.txt:INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/home/rgrossekunst/forked/cuda-python/SpCu12Venv/lib/python3.12/site-packages/nvidia/cusparselt/include'
1sp_1lx64_cu13.txt:INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/home/rgrossekunst/forked/cuda-python/SpCu13Venv/lib/python3.12/site-packages/nvidia/cusparselt/include'
1sp_2la64_cu12.txt:INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/wrk/forked/cuda-python/SpCu12Venv/lib/python3.12/site-packages/nvidia/cusparselt/include'
1sp_2la64_cu13.txt:INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/wrk/forked/cuda-python/SpCu13Venv/lib/python3.12/site-packages/nvidia/cusparselt/include'
1sp_3wx64_cu12.txt:INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='C:\Users\rgrossekunst\forked\cuda-python\Sp12Venv\Lib\site-packages\nvidia\cusparselt\include'
1sp_3wx64_cu13.txt:INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='C:\Users\rgrossekunst\forked\cuda-python\Sp13Venv\Lib\site-packages\nvidia\cusparselt\include'
3cc_1lx64_cu12.txt:INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/home/rgrossekunst/miniforge3/envs/pathfinder_testing_cu12.9.1/include'
3cc_1lx64_cu13.txt:INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/home/rgrossekunst/miniforge3/envs/pathfinder_testing_cu13.0.2/include'
3cc_2la64_cu12.txt:INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/wrk/miniforge3/envs/pathfinder_testing_cu12.9.1/include'
3cc_2la64_cu13.txt:INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/wrk/miniforge3/envs/pathfinder_testing_cu13.0.2/include'
3cc_3wx64_cu12.txt:INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='C:\Users\rgrossekunst\AppData\Local\miniforge3\envs\pathfinder_testing_cu12.9.1\Library\include'
3cc_3wx64_cu13.txt:INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='C:\Users\rgrossekunst\AppData\Local\miniforge3\envs\pathfinder_testing_cu13.0.2\Library\include'

rwgk-win11.localdomain:~/col $ grep '^INFO test_.*: abs_path=' *.txt | tr -s '\\' '\\'
1sp_1lx64_cu12.txt:INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/home/rgrossekunst/forked/cuda-python/SpCu12Venv/lib/python3.12/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
1sp_1lx64_cu13.txt:INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/home/rgrossekunst/forked/cuda-python/SpCu13Venv/lib/python3.12/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
1sp_2la64_cu12.txt:INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/wrk/forked/cuda-python/SpCu12Venv/lib/python3.12/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
1sp_2la64_cu13.txt:INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/wrk/forked/cuda-python/SpCu13Venv/lib/python3.12/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
1sp_3wx64_cu12.txt:INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=C:\Users\rgrossekunst\forked\cuda-python\Sp12Venv\Lib\site-packages\nvidia/cusparselt/bin\cusparseLt.dll
1sp_3wx64_cu13.txt:INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=C:\Users\rgrossekunst\forked\cuda-python\Sp13Venv\Lib\site-packages\nvidia/cusparselt/bin\cusparseLt.dll
3cc_1lx64_cu12.txt:INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/home/rgrossekunst/miniforge3/envs/pathfinder_testing_cu12.9.1/lib/libcusparseLt.so
3cc_1lx64_cu13.txt:INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/home/rgrossekunst/miniforge3/envs/pathfinder_testing_cu13.0.2/lib/libcusparseLt.so
3cc_2la64_cu12.txt:INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/wrk/miniforge3/envs/pathfinder_testing_cu12.9.1/lib/libcusparseLt.so
3cc_2la64_cu13.txt:INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/wrk/miniforge3/envs/pathfinder_testing_cu13.0.2/lib/libcusparseLt.so
3cc_3wx64_cu12.txt:INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=C:\Users\rgrossekunst\AppData\Local\miniforge3\envs\pathfinder_testing_cu12.9.1\Library\bin\cusparseLt.dll
3cc_3wx64_cu13.txt:INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=C:\Users\rgrossekunst\AppData\Local\miniforge3\envs\pathfinder_testing_cu13.0.2\Library\bin\cusparseLt.dll

local-ctk testing is omitted, because

cusparseLt is not part of the CTK
we only support site-packages and conda-ctk for cusparseLt

Test logs: pr1200_testing_2025-10-29+213040.zip

…ands

copy-pr-bot · 2025-10-30T02:25:23Z

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rwgk · 2025-10-30T02:25:46Z

/ok to test

github-actions · 2025-10-30T02:35:55Z

Doc Preview CI
🚀 View preview at https://nvidia.github.io/cuda-python/pr-preview/pr-1200/
https://nvidia.github.io/cuda-python/pr-preview/pr-1200/cuda-core/
https://nvidia.github.io/cuda-python/pr-preview/pr-1200/cuda-bindings/
https://nvidia.github.io/cuda-python/pr-preview/pr-1200/cuda-pathfinder/
Preview will be ready when the GitHub Pages deployment is complete.

rwgk · 2025-10-30T04:41:57Z

CI testing passed (at commit 40de332): https://github.com/NVIDIA/cuda-python/actions/runs/18927890344/job/54038510714?pr=1200

copy-pr-bot · 2025-10-30T04:45:14Z

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rwgk · 2025-10-30T04:53:40Z

Not rerunning the CI because the last commit (ba1e17f) only changed the pathfinder version number.

cpcloud

🚢

rwgk · 2025-10-30T19:34:59Z

/ok to test

rwgk · 2025-10-30T20:34:10Z

Quick manual QA based on

https://github.com/NVIDIA/cuda-python/actions/runs/18927890344/job/54038510714?pr=1200
logs_48738060654.zip

rwgk-win11.localdomain:~/logs_48738060654 $ grep 'Z INFO test_load_nvidia_dynamic_lib\[cusparseLt\]: abs_path=' *Test*.txt | tr -s '\\' '\\' | cut -d: -f1 | uniq
10_Test linux-aarch64 _ py3.12, 13.0.2, wheels, GPU a100.txt
11_Test linux-aarch64 _ py3.13, 12.9.1, wheels, GPU a100.txt
12_Test linux-aarch64 _ py3.14t, 13.0.2, local, GPU a100.txt
13_Test linux-aarch64 _ py3.11, 13.0.2, local, GPU a100.txt
14_Test linux-aarch64 _ py3.11, 12.9.1, wheels, GPU a100.txt
15_Test linux-aarch64 _ py3.13, 13.0.2, local, GPU a100.txt
16_Test linux-aarch64 _ py3.12, 12.9.1, local, GPU a100.txt
17_Test linux-aarch64 _ py3.14, 13.0.2, local, GPU a100.txt
18_Test linux-aarch64 _ py3.9, 12.9.1, wheels, GPU a100.txt
19_Test linux-aarch64 _ py3.10, 12.9.1, local, GPU a100.txt
1_Test win-64 _ py3.13, 13.0.2, local, GPU l4.txt
20_Test linux-aarch64 _ py3.10, 13.0.2, wheels, GPU a100.txt
21_Test linux-aarch64 _ py3.9, 13.0.2, local, GPU a100.txt
23_Test linux-64 _ py3.10, 12.9.1, local, GPU l4.txt
24_Test linux-64 _ py3.14t, 13.0.2, local, GPU l4.txt
25_Test linux-64 _ py3.12, 12.9.1, local, GPU l4.txt
26_Test linux-64 _ py3.9, 13.0.2, local, GPU l4.txt
27_Test linux-64 _ py3.13, 13.0.2, local, GPU l4.txt
28_Test linux-64 _ py3.13, 12.9.1, wheels, GPU l4.txt
29_Test linux-64 _ py3.14, 13.0.2, local, GPU l4.txt
2_Test win-64 _ py3.14t, 13.0.2, local, GPU l4.txt
30_Test linux-64 _ py3.13, 13.0.2, local, GPU H100.txt
31_Test linux-64 _ py3.11, 12.9.1, wheels, GPU l4.txt
32_Test linux-64 _ py3.10, 13.0.2, wheels, GPU l4.txt
33_Test linux-64 _ py3.11, 13.0.2, local, GPU l4.txt
34_Test linux-64 _ py3.12, 13.0.2, wheels, GPU l4.txt
35_Test linux-64 _ py3.9, 12.9.1, wheels, GPU l4.txt
3_Test win-64 _ py3.14, 13.0.2, wheels, GPU t4.txt
4_Test win-64 _ py3.14t, 13.0.2, wheels, GPU t4.txt
5_Test win-64 _ py3.12, 12.9.1, local, GPU t4.txt
6_Test win-64 _ py3.13, 13.0.2, wheels, GPU t4.txt
7_Test win-64 _ py3.14, 13.0.2, local, GPU l4.txt
8_Test win-64 _ py3.12, 12.9.1, wheels, GPU l4.txt

rwgk-win11.localdomain:~/logs_48738060654 $ grep 'Z INFO test_load_nvidia_dynamic_lib\[cusparseLt\]: abs_path=' *Test*.txt | tr -s '\\' '\\' | cut -d: -f2- | cut -dZ -f
2- | sort | uniq -c
      2  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/opt/hostedtoolcache/Python/3.10.19/arm64/lib/python3.10/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
      2  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/opt/hostedtoolcache/Python/3.10.19/x64/lib/python3.10/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
      2  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/opt/hostedtoolcache/Python/3.11.14/arm64/lib/python3.11/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
      2  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
      2  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/opt/hostedtoolcache/Python/3.12.12/arm64/lib/python3.12/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
      2  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/opt/hostedtoolcache/Python/3.12.12/x64/lib/python3.12/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
      2  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/opt/hostedtoolcache/Python/3.13.9/arm64/lib/python3.13/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
      3  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/opt/hostedtoolcache/Python/3.13.9/x64/lib/python3.13/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
      1  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/opt/hostedtoolcache/Python/3.14.0/arm64-freethreaded/lib/python3.14t/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
      1  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/opt/hostedtoolcache/Python/3.14.0/arm64/lib/python3.14/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
      1  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/opt/hostedtoolcache/Python/3.14.0/x64-freethreaded/lib/python3.14t/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
      1  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/opt/hostedtoolcache/Python/3.14.0/x64/lib/python3.14/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
      2  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/opt/hostedtoolcache/Python/3.9.24/arm64/lib/python3.9/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
      2  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=/opt/hostedtoolcache/Python/3.9.24/x64/lib/python3.9/site-packages/nvidia/cusparselt/lib/libcusparseLt.so.0
      2  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=C:\actions-runner\_work\_tool\Python\3.12.10\x64\Lib\site-packages\nvidia/cusparselt/bin\cusparseLt.dll
      2  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=C:\actions-runner\_work\_tool\Python\3.13.9\x64\Lib\site-packages\nvidia/cusparselt/bin\cusparseLt.dll
      2  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=C:\actions-runner\_work\_tool\Python\3.14.0\x64-freethreaded\Lib\site-packages\nvidia/cusparselt/bin\cusparseLt.dll
      2  INFO test_load_nvidia_dynamic_lib[cusparseLt]: abs_path=C:\actions-runner\_work\_tool\Python\3.14.0\x64\Lib\site-packages\nvidia/cusparselt/bin\cusparseLt.dll

rwgk-win11.localdomain:~/logs_48738060654 $ grep 'Z INFO test_load_nvidia_dynamic_lib\[cusparseLt\]: abs_path=' *Test*.txt | tr -s '\\' '\\' | cut -d: -f1 | uniq
10_Test linux-aarch64 _ py3.12, 13.0.2, wheels, GPU a100.txt
11_Test linux-aarch64 _ py3.13, 12.9.1, wheels, GPU a100.txt
12_Test linux-aarch64 _ py3.14t, 13.0.2, local, GPU a100.txt
13_Test linux-aarch64 _ py3.11, 13.0.2, local, GPU a100.txt
14_Test linux-aarch64 _ py3.11, 12.9.1, wheels, GPU a100.txt
15_Test linux-aarch64 _ py3.13, 13.0.2, local, GPU a100.txt
16_Test linux-aarch64 _ py3.12, 12.9.1, local, GPU a100.txt
17_Test linux-aarch64 _ py3.14, 13.0.2, local, GPU a100.txt
18_Test linux-aarch64 _ py3.9, 12.9.1, wheels, GPU a100.txt
19_Test linux-aarch64 _ py3.10, 12.9.1, local, GPU a100.txt
1_Test win-64 _ py3.13, 13.0.2, local, GPU l4.txt
20_Test linux-aarch64 _ py3.10, 13.0.2, wheels, GPU a100.txt
21_Test linux-aarch64 _ py3.9, 13.0.2, local, GPU a100.txt
23_Test linux-64 _ py3.10, 12.9.1, local, GPU l4.txt
24_Test linux-64 _ py3.14t, 13.0.2, local, GPU l4.txt
25_Test linux-64 _ py3.12, 12.9.1, local, GPU l4.txt
26_Test linux-64 _ py3.9, 13.0.2, local, GPU l4.txt
27_Test linux-64 _ py3.13, 13.0.2, local, GPU l4.txt
28_Test linux-64 _ py3.13, 12.9.1, wheels, GPU l4.txt
29_Test linux-64 _ py3.14, 13.0.2, local, GPU l4.txt
2_Test win-64 _ py3.14t, 13.0.2, local, GPU l4.txt
30_Test linux-64 _ py3.13, 13.0.2, local, GPU H100.txt
31_Test linux-64 _ py3.11, 12.9.1, wheels, GPU l4.txt
32_Test linux-64 _ py3.10, 13.0.2, wheels, GPU l4.txt
33_Test linux-64 _ py3.11, 13.0.2, local, GPU l4.txt
34_Test linux-64 _ py3.12, 13.0.2, wheels, GPU l4.txt
35_Test linux-64 _ py3.9, 12.9.1, wheels, GPU l4.txt
3_Test win-64 _ py3.14, 13.0.2, wheels, GPU t4.txt
4_Test win-64 _ py3.14t, 13.0.2, wheels, GPU t4.txt
5_Test win-64 _ py3.12, 12.9.1, local, GPU t4.txt
6_Test win-64 _ py3.13, 13.0.2, wheels, GPU t4.txt
7_Test win-64 _ py3.14, 13.0.2, local, GPU l4.txt
8_Test win-64 _ py3.12, 12.9.1, wheels, GPU l4.txt

rwgk-win11.localdomain:~/logs_48738060654 $ grep 'Z INFO test_.*\[cusparseLt\]: hdr_dir=' *Test*.txt | grep -v ': hdr_dir=None' | tr -s '\\' '\\' | cut -d: -f2- | cut -dZ -f2- | sort | uniq -c
      2  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/opt/hostedtoolcache/Python/3.10.19/arm64/lib/python3.10/site-packages/nvidia/cusparselt/include'
      2  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/opt/hostedtoolcache/Python/3.10.19/x64/lib/python3.10/site-packages/nvidia/cusparselt/include'
      2  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/opt/hostedtoolcache/Python/3.11.14/arm64/lib/python3.11/site-packages/nvidia/cusparselt/include'
      2  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/site-packages/nvidia/cusparselt/include'
      2  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/opt/hostedtoolcache/Python/3.12.12/arm64/lib/python3.12/site-packages/nvidia/cusparselt/include'
      2  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/opt/hostedtoolcache/Python/3.12.12/x64/lib/python3.12/site-packages/nvidia/cusparselt/include'
      2  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/opt/hostedtoolcache/Python/3.13.9/arm64/lib/python3.13/site-packages/nvidia/cusparselt/include'
      3  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/opt/hostedtoolcache/Python/3.13.9/x64/lib/python3.13/site-packages/nvidia/cusparselt/include'
      1  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/opt/hostedtoolcache/Python/3.14.0/arm64-freethreaded/lib/python3.14t/site-packages/nvidia/cusparselt/include'
      1  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/opt/hostedtoolcache/Python/3.14.0/arm64/lib/python3.14/site-packages/nvidia/cusparselt/include'
      1  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/opt/hostedtoolcache/Python/3.14.0/x64-freethreaded/lib/python3.14t/site-packages/nvidia/cusparselt/include'
      1  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/opt/hostedtoolcache/Python/3.14.0/x64/lib/python3.14/site-packages/nvidia/cusparselt/include'
      2  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/opt/hostedtoolcache/Python/3.9.24/arm64/lib/python3.9/site-packages/nvidia/cusparselt/include'
      2  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='/opt/hostedtoolcache/Python/3.9.24/x64/lib/python3.9/site-packages/nvidia/cusparselt/include'
      2  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='C:\actions-runner\_work\_tool\Python\3.12.10\x64\Lib\site-packages\nvidia\cusparselt\include'
      2  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='C:\actions-runner\_work\_tool\Python\3.13.9\x64\Lib\site-packages\nvidia\cusparselt\include'
      2  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='C:\actions-runner\_work\_tool\Python\3.14.0\x64-freethreaded\Lib\site-packages\nvidia\cusparselt\include'
      2  INFO test_find_non_ctk_headers[cusparseLt]: hdr_dir='C:\actions-runner\_work\_tool\Python\3.14.0\x64\Lib\site-packages\nvidia\cusparselt\include'

rwgk added 4 commits October 29, 2025 17:24

Add support for Linux site-packages

392dcb0

Add support for Windows site-packages

2646015

Add cusparselt to toolshed/conda_create_for_pathfinder_testing.* comm…

3ee040a

…ands

Add cusparseLt in supported_nvidia_headers.py

40de332

rwgk self-assigned this Oct 30, 2025

rwgk added enhancement Any code-related improvements cuda.pathfinder Everything related to the cuda.pathfinder module labels Oct 30, 2025

Bump pathfinder version to 1.3.3a0

ba1e17f

rwgk force-pushed the cusparselt_support branch from a333403 to ba1e17f Compare October 30, 2025 04:44

rwgk marked this pull request as ready for review October 30, 2025 04:45

rwgk requested a review from leofang October 30, 2025 04:45

cpcloud approved these changes Oct 30, 2025

View reviewed changes

Merge branch 'main' into cusparselt_support

a4de2ae

rwgk enabled auto-merge (squash) October 30, 2025 19:35

rwgk merged commit 7e26f1d into NVIDIA:main Oct 30, 2025
64 checks passed

rwgk deleted the cusparselt_support branch October 30, 2025 20:44

leofang added this to the cuda.pathfinder 1.4.0 milestone Nov 10, 2025

leofang added the P0 High priority - Must do! label Nov 10, 2025

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