Add support for virtual shared memory to `DispatchReduceByKey` by elstehle · Pull Request #5440 · NVIDIA/cccl

elstehle · 2025-08-06T08:09:09Z

Description

I verified that for our existing reduce_by_key tests that sass didn't change - except for the extra vsmem kernel parameter.

cub/test/catch2_test_device_reduce_by_key_vsmem.cu

bernhardmgruber · 2025-08-06T08:50:08Z

I am not 100% certain this does not influence the perf of the generated kernels. Could you please post whether SASS changes for ordinary key types? Otherwise we need a quick benchmark I think. Thx!

elstehle · 2025-08-06T08:56:06Z

I am not 100% certain this does not influence the perf of the generated kernels. Could you please post whether SASS changes for ordinary key types? Otherwise we need a quick benchmark I think. Thx!

Valid concern. I had verified and ticked the box in the referenced issue. Will also add a comment on the PR description.

github-actions · 2025-08-06T11:02:31Z

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🟩 packaging: Pass: 100%/4 | Total: 26m 04s | Avg: 6m 31s | Max: 7m 59s

🟩 cpu
  🟩 amd64              Pass: 100%/4   | Total: 26m 04s | Avg:  6m 31s | Max:  7m 59s
🟩 ctk
  🟩 12.0               Pass: 100%/2   | Total: 10m 11s | Avg:  5m 05s | Max:  7m 51s
  🟩 12.9               Pass: 100%/2   | Total: 15m 53s | Avg:  7m 56s | Max:  7m 59s
🟩 cudacxx
  🟩 nvcc12.0           Pass: 100%/2   | Total: 10m 11s | Avg:  5m 05s | Max:  7m 51s
  🟩 nvcc12.9           Pass: 100%/2   | Total: 15m 53s | Avg:  7m 56s | Max:  7m 59s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/4   | Total: 26m 04s | Avg:  6m 31s | Max:  7m 59s
🟩 cxx
  🟩 Clang14            Pass: 100%/1   | Total:  7m 51s | Avg:  7m 51s | Max:  7m 51s
  🟩 Clang19            Pass: 100%/1   | Total:  7m 54s | Avg:  7m 54s | Max:  7m 54s
  🟩 GCC12              Pass: 100%/1   | Total:  2m 20s | Avg:  2m 20s | Max:  2m 20s
  🟩 GCC13              Pass: 100%/1   | Total:  7m 59s | Avg:  7m 59s | Max:  7m 59s
🟩 cxx_family
  🟩 Clang              Pass: 100%/2   | Total: 15m 45s | Avg:  7m 52s | Max:  7m 54s
  🟩 GCC                Pass: 100%/2   | Total: 10m 19s | Avg:  5m 09s | Max:  7m 59s
🟩 gpu
  🟩 rtx2080            Pass: 100%/4   | Total: 26m 04s | Avg:  6m 31s | Max:  7m 59s
🟩 jobs
  🟩 Test               Pass: 100%/4   | Total: 26m 04s | Avg:  6m 31s | Max:  7m 59s

🟩 stdpar: Pass: 100%/4 | Total: 15m 17s | Avg: 3m 49s | Max: 4m 14s

🟩 cpu
  🟩 amd64              Pass: 100%/2   | Total:  8m 03s | Avg:  4m 01s | Max:  4m 14s
  🟩 arm64              Pass: 100%/2   | Total:  7m 14s | Avg:  3m 37s | Max:  3m 42s
🟩 ctk
  🟩 12.9               Pass: 100%/4   | Total: 15m 17s | Avg:  3m 49s | Max:  4m 14s
🟩 cudacxx
  🟩 nvcc12.9           Pass: 100%/4   | Total: 15m 17s | Avg:  3m 49s | Max:  4m 14s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/4   | Total: 15m 17s | Avg:  3m 49s | Max:  4m 14s
🟩 cxx
  🟩 NVHPC25.5          Pass: 100%/4   | Total: 15m 17s | Avg:  3m 49s | Max:  4m 14s
🟩 cxx_family
  🟩 NVHPC              Pass: 100%/4   | Total: 15m 17s | Avg:  3m 49s | Max:  4m 14s
🟩 gpu
  🟩 rtx2080            Pass: 100%/4   | Total: 15m 17s | Avg:  3m 49s | Max:  4m 14s
🟩 jobs
  🟩 Build              Pass: 100%/4   | Total: 15m 17s | Avg:  3m 49s | Max:  4m 14s
🟩 std
  🟩 17                 Pass: 100%/2   | Total:  7m 46s | Avg:  3m 53s | Max:  4m 14s
  🟩 20                 Pass: 100%/2   | Total:  7m 31s | Avg:  3m 45s | Max:  3m 49s

👃 Inspect Changes

Modifications in project?

	Project
	CCCL Infrastructure
	CCCL Packaging
	libcu++
+/-	CUB
	Thrust
	CUDA Experimental
	stdpar
	python
	CCCL C Parallel Library
	Catch2Helper

Modifications in project or dependencies?

	Project
	CCCL Infrastructure
+/-	CCCL Packaging
	libcu++
+/-	CUB
+/-	Thrust
+/-	CUDA Experimental
+/-	stdpar
+/-	python
+/-	CCCL C Parallel Library
+/-	Catch2Helper

🏃‍ Runner counts (total jobs: 162)

#	Runner
93	`linux-amd64-cpu16`
17	`linux-amd64-gpu-l4-latest-1`
17	`windows-amd64-cpu16`
10	`linux-arm64-cpu16`
9	`linux-amd64-gpu-h100-latest-1`
7	`linux-amd64-gpu-rtx2080-latest-1`
6	`linux-amd64-gpu-rtxa6000-latest-1`
3	`linux-amd64-gpu-rtx4090-latest-1`

github-actions · 2025-08-06T15:45:55Z

🟨 CI finished in 2h 16m: Pass: 91%/162 | Total: 1d 04h | Avg: 10m 23s | Max: 2h 13m | Hits: 99%/152709

🟨 python: Pass: 36%/22 | Total: 1h 54m | Avg: 5m 11s | Max: 9m 38s

🟨 jobs
  🟩 Build cuda.cccl    Pass: 100%/2   | Total: 19m 04s | Avg:  9m 32s | Max:  9m 38s
  🟥 Test cuda.cccl.cooperative Pass:   0%/5   | Total: 23m 22s | Avg:  4m 40s | Max:  5m 26s
  🟨 Test cuda.cccl.examples Pass:  20%/5   | Total: 20m 41s | Avg:  4m 08s | Max:  4m 17s
  🟩 Test cuda.cccl.headers Pass: 100%/5   | Total: 20m 18s | Avg:  4m 03s | Max:  4m 37s
  🟥 Test cuda.cccl.parallel Pass:   0%/5   | Total: 30m 47s | Avg:  6m 09s | Max:  9m 09s
🟨 cpu
  🟨 amd64              Pass:  36%/22  | Total:  1h 54m | Avg:  5m 11s | Max:  9m 38s
🟨 cudacxx_family
  🟨 nvcc               Pass:  36%/22  | Total:  1h 54m | Avg:  5m 11s | Max:  9m 38s
🟨 cxx
  🟨 GCC13              Pass:  36%/22  | Total:  1h 54m | Avg:  5m 11s | Max:  9m 38s
🟨 cxx_family
  🟨 GCC                Pass:  36%/22  | Total:  1h 54m | Avg:  5m 11s | Max:  9m 38s
🟨 ctk
  🟨 12.5               Pass:  50%/6   | Total: 24m 44s | Avg:  4m 07s | Max:  4m 28s
  🟥 12.8               Pass:   0%/2   | Total:  9m 04s | Avg:  4m 32s | Max:  4m 38s
  🟨 12.9               Pass:  35%/14  | Total:  1h 20m | Avg:  5m 44s | Max:  9m 38s
🟨 cudacxx
  🟨 nvcc12.5           Pass:  50%/6   | Total: 24m 44s | Avg:  4m 07s | Max:  4m 28s
  🟥 nvcc12.8           Pass:   0%/2   | Total:  9m 04s | Avg:  4m 32s | Max:  4m 38s
  🟨 nvcc12.9           Pass:  35%/14  | Total:  1h 20m | Avg:  5m 44s | Max:  9m 38s
🟨 gpu
  🟨 h100               Pass:  25%/4   | Total: 21m 15s | Avg:  5m 18s | Max:  8m 03s
  🟨 l4                 Pass:  38%/18  | Total:  1h 32m | Avg:  5m 09s | Max:  9m 38s
🟨 py_version
  🟨 3.10               Pass:  33%/9   | Total: 44m 40s | Avg:  4m 57s | Max:  9m 26s
  🟨 3.13               Pass:  38%/13  | Total:  1h 09m | Avg:  5m 20s | Max:  9m 38s

🟩 cub: Pass: 100%/50 | Total: 11h 05m | Avg: 13m 18s | Max: 35m 03s | Hits: 99%/52560

🟩 cpu
  🟩 amd64              Pass: 100%/48  | Total: 10h 50m | Avg: 13m 32s | Max: 35m 03s | Hits:  99%/50000 
  🟩 arm64              Pass: 100%/2   | Total: 14m 55s | Avg:  7m 27s | Max:  8m 40s | Hits:  99%/2560  
🟩 ctk
  🟩 12.0               Pass: 100%/5   | Total:  1h 02m | Avg: 12m 27s | Max: 30m 16s | Hits:  99%/6296  
  🟩 12.9               Pass: 100%/45  | Total: 10h 02m | Avg: 13m 23s | Max: 35m 03s | Hits:  99%/46264 
🟩 cudacxx
  🟩 ClangCUDA19        Pass: 100%/2   | Total: 10m 52s | Avg:  5m 26s | Max:  5m 28s | Hits:  99%/2207  
  🟩 nvcc12.0           Pass: 100%/5   | Total:  1h 02m | Avg: 12m 27s | Max: 30m 16s | Hits:  99%/6296  
  🟩 nvcc12.9           Pass: 100%/43  | Total:  9h 51m | Avg: 13m 45s | Max: 35m 03s | Hits:  99%/44057 
🟩 cudacxx_family
  🟩 ClangCUDA          Pass: 100%/2   | Total: 10m 52s | Avg:  5m 26s | Max:  5m 28s | Hits:  99%/2207  
  🟩 nvcc               Pass: 100%/48  | Total: 10h 54m | Avg: 13m 37s | Max: 35m 03s | Hits:  99%/50353 
🟩 cxx
  🟩 Clang14            Pass: 100%/4   | Total: 29m 25s | Avg:  7m 21s | Max:  7m 53s | Hits:  99%/5122  
  🟩 Clang15            Pass: 100%/2   | Total: 15m 02s | Avg:  7m 31s | Max:  7m 44s | Hits:  99%/2557  
  🟩 Clang16            Pass: 100%/2   | Total: 14m 27s | Avg:  7m 13s | Max:  7m 30s | Hits:  99%/2557  
  🟩 Clang17            Pass: 100%/2   | Total: 14m 09s | Avg:  7m 04s | Max:  7m 07s | Hits:  99%/2557  
  🟩 Clang18            Pass: 100%/2   | Total: 13m 48s | Avg:  6m 54s | Max:  6m 59s | Hits:  99%/2557  
  🟩 Clang19            Pass: 100%/7   | Total:  1h 15m | Avg: 10m 48s | Max: 24m 27s | Hits:  99%/6043  
  🟩 GCC7               Pass: 100%/2   | Total: 17m 05s | Avg:  8m 32s | Max:  8m 50s | Hits:  99%/2560  
  🟩 GCC8               Pass: 100%/1   | Total:  9m 24s | Avg:  9m 24s | Max:  9m 24s | Hits:  99%/1280  
  🟩 GCC9               Pass: 100%/2   | Total: 19m 24s | Avg:  9m 42s | Max:  9m 59s | Hits:  99%/2560  
  🟩 GCC10              Pass: 100%/2   | Total: 18m 03s | Avg:  9m 01s | Max:  9m 08s | Hits:  99%/2561  
  🟩 GCC11              Pass: 100%/2   | Total: 19m 04s | Avg:  9m 32s | Max:  9m 56s | Hits:  99%/2557  
  🟩 GCC12              Pass: 100%/2   | Total: 20m 50s | Avg: 10m 25s | Max: 11m 24s | Hits:  99%/2557  
  🟩 GCC13              Pass: 100%/12  | Total:  3h 07m | Avg: 15m 36s | Max: 28m 14s | Hits:  99%/7683  
  🟩 MSVC14.29          Pass: 100%/2   | Total:  1h 00m | Avg: 30m 12s | Max: 30m 16s | Hits:  98%/2350  
  🟩 MSVC14.43          Pass: 100%/4   | Total:  2h 03m | Avg: 30m 59s | Max: 35m 03s | Hits:  98%/4700  
  🟩 NVHPC25.5          Pass: 100%/2   | Total: 27m 03s | Avg: 13m 31s | Max: 13m 32s | Hits:  98%/2359  
🟩 cxx_family
  🟩 Clang              Pass: 100%/19  | Total:  2h 42m | Avg:  8m 33s | Max: 24m 27s | Hits:  99%/21393 
  🟩 GCC                Pass: 100%/23  | Total:  4h 51m | Avg: 12m 39s | Max: 28m 14s | Hits:  99%/21758 
  🟩 MSVC               Pass: 100%/6   | Total:  3h 04m | Avg: 30m 43s | Max: 35m 03s | Hits:  98%/7050  
  🟩 NVHPC              Pass: 100%/2   | Total: 27m 03s | Avg: 13m 31s | Max: 13m 32s | Hits:  98%/2359  
🟩 gpu
  🟩 h100               Pass: 100%/3   | Total: 59m 44s | Avg: 19m 54s | Max: 28m 14s | Hits:  99%/1281  
  🟩 rtx2080            Pass: 100%/39  | Total:  7h 41m | Avg: 11m 49s | Max: 35m 03s | Hits:  99%/48719 
  🟩 rtxa6000           Pass: 100%/8   | Total:  2h 23m | Avg: 17m 59s | Max: 24m 27s | Hits:  99%/2560  
🟩 jobs
  🟩 Build              Pass: 100%/42  | Total:  8h 07m | Avg: 11m 35s | Max: 35m 03s | Hits:  99%/52560 
  🟩 DeviceLaunch       Pass: 100%/1   | Total: 22m 14s | Avg: 22m 14s | Max: 22m 14s
  🟩 GraphCapture       Pass: 100%/1   | Total: 14m 52s | Avg: 14m 52s | Max: 14m 52s
  🟩 HostLaunch         Pass: 100%/3   | Total:  1h 16m | Avg: 25m 37s | Max: 28m 14s
  🟩 TestGPU            Pass: 100%/3   | Total:  1h 04m | Avg: 21m 21s | Max: 24m 45s
🟩 sm
  🟩 90                 Pass: 100%/3   | Total: 59m 44s | Avg: 19m 54s | Max: 28m 14s | Hits:  99%/1281  
  🟩 90;90a             Pass: 100%/2   | Total: 38m 06s | Avg: 19m 03s | Max: 29m 43s | Hits:  99%/2456  
  🟩 100;120            Pass: 100%/2   | Total: 35m 16s | Avg: 17m 38s | Max: 26m 55s | Hits:  99%/2456  
🟩 std
  🟩 17                 Pass: 100%/21  | Total:  4h 09m | Avg: 11m 53s | Max: 35m 03s | Hits:  99%/26271 
  🟩 20                 Pass: 100%/29  | Total:  6h 55m | Avg: 14m 19s | Max: 32m 18s | Hits:  99%/26289

🟩 thrust: Pass: 100%/50 | Total: 8h 50m | Avg: 10m 37s | Max: 33m 02s | Hits: 99%/84139

🟩 cmake_options
  🟩 -DTHRUST_DISPATCH_TYPE=Force32bit Pass: 100%/2   | Total: 13m 34s | Avg:  6m 47s | Max:  8m 27s | Hits:  99%/1914  
🟩 cpu
  🟩 amd64              Pass: 100%/48  | Total:  8h 38m | Avg: 10m 48s | Max: 33m 02s | Hits:  99%/80312 
  🟩 arm64              Pass: 100%/2   | Total: 12m 09s | Avg:  6m 04s | Max:  7m 01s | Hits:  99%/3827  
🟩 ctk
  🟩 12.0               Pass: 100%/5   | Total: 51m 52s | Avg: 10m 22s | Max: 26m 28s | Hits:  99%/9560  
  🟩 12.9               Pass: 100%/45  | Total:  7h 58m | Avg: 10m 38s | Max: 33m 02s | Hits:  99%/74579 
🟩 cudacxx
  🟩 ClangCUDA19        Pass: 100%/2   | Total: 11m 22s | Avg:  5m 41s | Max:  5m 46s | Hits: 100%/3826  
  🟩 nvcc12.0           Pass: 100%/5   | Total: 51m 52s | Avg: 10m 22s | Max: 26m 28s | Hits:  99%/9560  
  🟩 nvcc12.9           Pass: 100%/43  | Total:  7h 47m | Avg: 10m 52s | Max: 33m 02s | Hits:  99%/70753 
🟩 cudacxx_family
  🟩 ClangCUDA          Pass: 100%/2   | Total: 11m 22s | Avg:  5m 41s | Max:  5m 46s | Hits: 100%/3826  
  🟩 nvcc               Pass: 100%/48  | Total:  8h 39m | Avg: 10m 49s | Max: 33m 02s | Hits:  99%/80313 
🟩 cxx
  🟩 Clang14            Pass: 100%/4   | Total: 22m 57s | Avg:  5m 44s | Max:  6m 05s | Hits: 100%/7652  
  🟩 Clang15            Pass: 100%/2   | Total: 11m 48s | Avg:  5m 54s | Max:  5m 57s | Hits: 100%/3826  
  🟩 Clang16            Pass: 100%/2   | Total: 11m 59s | Avg:  5m 59s | Max:  6m 05s | Hits: 100%/3826  
  🟩 Clang17            Pass: 100%/2   | Total: 11m 46s | Avg:  5m 53s | Max:  5m 57s | Hits: 100%/3826  
  🟩 Clang18            Pass: 100%/2   | Total: 12m 00s | Avg:  6m 00s | Max:  6m 12s | Hits: 100%/3826  
  🟩 Clang19            Pass: 100%/7   | Total: 39m 03s | Avg:  5m 34s | Max:  6m 16s | Hits: 100%/9565  
  🟩 GCC7               Pass: 100%/2   | Total: 14m 15s | Avg:  7m 07s | Max:  7m 14s | Hits:  99%/3828  
  🟩 GCC8               Pass: 100%/1   | Total:  7m 23s | Avg:  7m 23s | Max:  7m 23s | Hits:  99%/1914  
  🟩 GCC9               Pass: 100%/2   | Total: 16m 15s | Avg:  8m 07s | Max:  8m 43s | Hits:  99%/3828  
  🟩 GCC10              Pass: 100%/2   | Total: 14m 32s | Avg:  7m 16s | Max:  7m 24s | Hits:  99%/3828  
  🟩 GCC11              Pass: 100%/2   | Total: 15m 28s | Avg:  7m 44s | Max:  7m 58s | Hits:  99%/3828  
  🟩 GCC12              Pass: 100%/2   | Total: 16m 20s | Avg:  8m 10s | Max:  8m 24s | Hits:  99%/3828  
  🟩 GCC13              Pass: 100%/11  | Total:  1h 14m | Avg:  6m 48s | Max:  8m 56s | Hits:  99%/13398 
  🟩 MSVC14.29          Pass: 100%/2   | Total: 54m 34s | Avg: 27m 17s | Max: 28m 06s | Hits:  99%/3812  
  🟩 MSVC14.43          Pass: 100%/5   | Total:  2h 25m | Avg: 29m 07s | Max: 32m 30s | Hits:  99%/9530  
  🟩 NVHPC25.5          Pass: 100%/2   | Total:  1h 01m | Avg: 30m 58s | Max: 33m 02s | Hits:  99%/3824  
🟩 cxx_family
  🟩 Clang              Pass: 100%/19  | Total:  1h 49m | Avg:  5m 45s | Max:  6m 16s | Hits: 100%/32521 
  🟩 GCC                Pass: 100%/22  | Total:  2h 39m | Avg:  7m 14s | Max:  8m 56s | Hits:  99%/34452 
  🟩 MSVC               Pass: 100%/7   | Total:  3h 20m | Avg: 28m 35s | Max: 32m 30s | Hits:  99%/13342 
  🟩 NVHPC              Pass: 100%/2   | Total:  1h 01m | Avg: 30m 58s | Max: 33m 02s | Hits:  99%/3824  
🟩 gpu
  🟩 h100               Pass: 100%/2   | Total: 14m 17s | Avg:  7m 08s | Max:  7m 51s | Hits:  99%/1914  
  🟩 rtx2080            Pass: 100%/38  | Total:  6h 47m | Avg: 10m 42s | Max: 33m 02s | Hits:  99%/72672 
  🟩 rtx4090            Pass: 100%/10  | Total:  1h 49m | Avg: 10m 56s | Max: 32m 30s | Hits:  99%/9553  
🟩 jobs
  🟩 Build              Pass: 100%/43  | Total:  7h 46m | Avg: 10m 50s | Max: 33m 02s | Hits:  99%/82233 
  🟩 TestCPU            Pass: 100%/3   | Total: 40m 44s | Avg: 13m 34s | Max: 32m 30s | Hits:  99%/1906  
  🟩 TestGPU            Pass: 100%/4   | Total: 24m 00s | Avg:  6m 00s | Max:  7m 51s
🟩 sm
  🟩 90                 Pass: 100%/2   | Total: 14m 17s | Avg:  7m 08s | Max:  7m 51s | Hits:  99%/1914  
  🟩 90;90a             Pass: 100%/2   | Total: 34m 29s | Avg: 17m 14s | Max: 27m 34s | Hits:  99%/3820  
  🟩 100;120            Pass: 100%/2   | Total: 34m 16s | Avg: 17m 08s | Max: 27m 19s | Hits:  99%/3820  
🟩 std
  🟩 17                 Pass: 100%/21  | Total:  3h 49m | Avg: 10m 55s | Max: 29m 16s | Hits:  99%/40160 
  🟩 20                 Pass: 100%/27  | Total:  4h 47m | Avg: 10m 39s | Max: 33m 02s | Hits:  99%/42065

🟩 cudax: Pass: 100%/28 | Total: 2h 35m | Avg: 5m 32s | Max: 11m 52s | Hits: 98%/15342

🟩 cpu
  🟩 amd64              Pass: 100%/24  | Total:  2h 20m | Avg:  5m 52s | Max: 11m 52s | Hits:  98%/12978 
  🟩 arm64              Pass: 100%/4   | Total: 14m 25s | Avg:  3m 36s | Max:  5m 40s | Hits:  97%/2364  
🟩 ctk
  🟩 12.0               Pass: 100%/3   | Total: 18m 03s | Avg:  6m 01s | Max: 11m 25s | Hits:  98%/1470  
  🟩 12.9               Pass: 100%/25  | Total:  2h 17m | Avg:  5m 29s | Max: 11m 52s | Hits:  98%/13872 
🟩 cudacxx
  🟩 nvcc12.0           Pass: 100%/3   | Total: 18m 03s | Avg:  6m 01s | Max: 11m 25s | Hits:  98%/1470  
  🟩 nvcc12.9           Pass: 100%/25  | Total:  2h 17m | Avg:  5m 29s | Max: 11m 52s | Hits:  98%/13872 
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/28  | Total:  2h 35m | Avg:  5m 32s | Max: 11m 52s | Hits:  98%/15342 
🟩 cxx
  🟩 Clang14            Pass: 100%/2   | Total:  6m 23s | Avg:  3m 11s | Max:  3m 16s | Hits: 100%/1184  
  🟩 Clang15            Pass: 100%/1   | Total:  3m 32s | Avg:  3m 32s | Max:  3m 32s | Hits: 100%/591   
  🟩 Clang16            Pass: 100%/1   | Total:  3m 20s | Avg:  3m 20s | Max:  3m 20s | Hits: 100%/591   
  🟩 Clang17            Pass: 100%/1   | Total:  3m 14s | Avg:  3m 14s | Max:  3m 14s | Hits: 100%/591   
  🟩 Clang18            Pass: 100%/1   | Total:  3m 20s | Avg:  3m 20s | Max:  3m 20s | Hits: 100%/591   
  🟩 Clang19            Pass: 100%/4   | Total: 16m 10s | Avg:  4m 02s | Max:  7m 29s | Hits: 100%/2364  
  🟩 GCC10              Pass: 100%/2   | Total:  6m 59s | Avg:  3m 29s | Max:  3m 31s | Hits:  99%/1184  
  🟩 GCC11              Pass: 100%/1   | Total:  3m 39s | Avg:  3m 39s | Max:  3m 39s | Hits:  99%/591   
  🟩 GCC12              Pass: 100%/1   | Total:  3m 51s | Avg:  3m 51s | Max:  3m 51s | Hits:  99%/591   
  🟩 GCC13              Pass: 100%/8   | Total: 45m 01s | Avg:  5m 37s | Max: 11m 23s | Hits:  97%/4728  
  🟩 MSVC14.39          Pass: 100%/1   | Total: 11m 25s | Avg: 11m 25s | Max: 11m 25s | Hits:  95%/288   
  🟩 MSVC14.43          Pass: 100%/3   | Total: 33m 48s | Avg: 11m 16s | Max: 11m 52s | Hits:  95%/870   
  🟩 NVHPC25.5          Pass: 100%/2   | Total: 14m 33s | Avg:  7m 16s | Max:  7m 18s | Hits:  97%/1178  
🟩 cxx_family
  🟩 Clang              Pass: 100%/10  | Total: 35m 59s | Avg:  3m 35s | Max:  7m 29s | Hits: 100%/5912  
  🟩 GCC                Pass: 100%/12  | Total: 59m 30s | Avg:  4m 57s | Max: 11m 23s | Hits:  98%/7094  
  🟩 MSVC               Pass: 100%/4   | Total: 45m 13s | Avg: 11m 18s | Max: 11m 52s | Hits:  95%/1158  
  🟩 NVHPC              Pass: 100%/2   | Total: 14m 33s | Avg:  7m 16s | Max:  7m 18s | Hits:  97%/1178  
🟩 gpu
  🟩 h100               Pass: 100%/2   | Total: 13m 10s | Avg:  6m 35s | Max:  9m 59s | Hits:  94%/1182  
  🟩 rtx2080            Pass: 100%/26  | Total:  2h 22m | Avg:  5m 27s | Max: 11m 52s | Hits:  98%/14160 
🟩 jobs
  🟩 Build              Pass: 100%/25  | Total:  2h 06m | Avg:  5m 03s | Max: 11m 52s | Hits:  98%/13569 
  🟩 Test               Pass: 100%/3   | Total: 28m 51s | Avg:  9m 37s | Max: 11m 23s | Hits:  96%/1773  
🟩 sm
  🟩 90                 Pass: 100%/2   | Total: 13m 10s | Avg:  6m 35s | Max:  9m 59s | Hits:  94%/1182  
  🟩 90;90a             Pass: 100%/2   | Total: 15m 13s | Avg:  7m 36s | Max: 11m 34s | Hits:  98%/881   
  🟩 100;120            Pass: 100%/2   | Total: 14m 09s | Avg:  7m 04s | Max: 10m 22s | Hits:  98%/881   
🟩 std
  🟩 17                 Pass: 100%/3   | Total: 13m 18s | Avg:  4m 26s | Max:  7m 15s | Hits:  99%/1771  
  🟩 20                 Pass: 100%/25  | Total:  2h 21m | Avg:  5m 40s | Max: 11m 52s | Hits:  98%/13571

🟩 cccl_c_parallel: Pass: 100%/4 | Total: 2h 51m | Avg: 42m 47s | Max: 2h 13m | Hits: 98%/668

🟩 cpu
  🟩 amd64              Pass: 100%/4   | Total:  2h 51m | Avg: 42m 47s | Max:  2h 13m | Hits:  98%/668   
🟩 ctk
  🟩 12.9               Pass: 100%/4   | Total:  2h 51m | Avg: 42m 47s | Max:  2h 13m | Hits:  98%/668   
🟩 cudacxx
  🟩 nvcc12.9           Pass: 100%/4   | Total:  2h 51m | Avg: 42m 47s | Max:  2h 13m | Hits:  98%/668   
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/4   | Total:  2h 51m | Avg: 42m 47s | Max:  2h 13m | Hits:  98%/668   
🟩 cxx
  🟩 GCC13              Pass: 100%/4   | Total:  2h 51m | Avg: 42m 47s | Max:  2h 13m | Hits:  98%/668   
🟩 cxx_family
  🟩 GCC                Pass: 100%/4   | Total:  2h 51m | Avg: 42m 47s | Max:  2h 13m | Hits:  98%/668   
🟩 gpu
  🟩 h100               Pass: 100%/1   | Total: 20m 03s | Avg: 20m 03s | Max: 20m 03s | Hits:  98%/167   
  🟩 l4                 Pass: 100%/1   | Total: 15m 58s | Avg: 15m 58s | Max: 15m 58s | Hits:  98%/167   
  🟩 rtx2080            Pass: 100%/2   | Total:  2h 15m | Avg:  1h 07m | Max:  2h 13m | Hits:  98%/334   
🟩 jobs
  🟩 Build              Pass: 100%/1   | Total:  2m 03s | Avg:  2m 03s | Max:  2m 03s | Hits:  98%/167   
  🟩 Test               Pass: 100%/3   | Total:  2h 49m | Avg: 56m 22s | Max:  2h 13m | Hits:  98%/501

🟩 packaging: Pass: 100%/4 | Total: 31m 18s | Avg: 7m 49s | Max: 13m 28s

🟩 cpu
  🟩 amd64              Pass: 100%/4   | Total: 31m 18s | Avg:  7m 49s | Max: 13m 28s
🟩 ctk
  🟩 12.0               Pass: 100%/2   | Total: 15m 25s | Avg:  7m 42s | Max: 11m 46s
  🟩 12.9               Pass: 100%/2   | Total: 15m 53s | Avg:  7m 56s | Max: 13m 28s
🟩 cudacxx
  🟩 nvcc12.0           Pass: 100%/2   | Total: 15m 25s | Avg:  7m 42s | Max: 11m 46s
  🟩 nvcc12.9           Pass: 100%/2   | Total: 15m 53s | Avg:  7m 56s | Max: 13m 28s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/4   | Total: 31m 18s | Avg:  7m 49s | Max: 13m 28s
🟩 cxx
  🟩 Clang14            Pass: 100%/1   | Total: 11m 46s | Avg: 11m 46s | Max: 11m 46s
  🟩 Clang19            Pass: 100%/1   | Total: 13m 28s | Avg: 13m 28s | Max: 13m 28s
  🟩 GCC12              Pass: 100%/1   | Total:  3m 39s | Avg:  3m 39s | Max:  3m 39s
  🟩 GCC13              Pass: 100%/1   | Total:  2m 25s | Avg:  2m 25s | Max:  2m 25s
🟩 cxx_family
  🟩 Clang              Pass: 100%/2   | Total: 25m 14s | Avg: 12m 37s | Max: 13m 28s
  🟩 GCC                Pass: 100%/2   | Total:  6m 04s | Avg:  3m 02s | Max:  3m 39s
🟩 gpu
  🟩 rtx2080            Pass: 100%/4   | Total: 31m 18s | Avg:  7m 49s | Max: 13m 28s
🟩 jobs
  🟩 Test               Pass: 100%/4   | Total: 31m 18s | Avg:  7m 49s | Max: 13m 28s

🟩 stdpar: Pass: 100%/4 | Total: 16m 07s | Avg: 4m 01s | Max: 4m 27s

🟩 cpu
  🟩 amd64              Pass: 100%/2   | Total:  8m 48s | Avg:  4m 24s | Max:  4m 27s
  🟩 arm64              Pass: 100%/2   | Total:  7m 19s | Avg:  3m 39s | Max:  3m 40s
🟩 ctk
  🟩 12.9               Pass: 100%/4   | Total: 16m 07s | Avg:  4m 01s | Max:  4m 27s
🟩 cudacxx
  🟩 nvcc12.9           Pass: 100%/4   | Total: 16m 07s | Avg:  4m 01s | Max:  4m 27s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/4   | Total: 16m 07s | Avg:  4m 01s | Max:  4m 27s
🟩 cxx
  🟩 NVHPC25.5          Pass: 100%/4   | Total: 16m 07s | Avg:  4m 01s | Max:  4m 27s
🟩 cxx_family
  🟩 NVHPC              Pass: 100%/4   | Total: 16m 07s | Avg:  4m 01s | Max:  4m 27s
🟩 gpu
  🟩 rtx2080            Pass: 100%/4   | Total: 16m 07s | Avg:  4m 01s | Max:  4m 27s
🟩 jobs
  🟩 Build              Pass: 100%/4   | Total: 16m 07s | Avg:  4m 01s | Max:  4m 27s
🟩 std
  🟩 17                 Pass: 100%/2   | Total:  8m 06s | Avg:  4m 03s | Max:  4m 27s
  🟩 20                 Pass: 100%/2   | Total:  8m 01s | Avg:  4m 00s | Max:  4m 21s

👃 Inspect Changes

Modifications in project?

	Project
	CCCL Infrastructure
	CCCL Packaging
	libcu++
+/-	CUB
	Thrust
	CUDA Experimental
	stdpar
	python
	CCCL C Parallel Library
	Catch2Helper

Modifications in project or dependencies?

	Project
	CCCL Infrastructure
+/-	CCCL Packaging
	libcu++
+/-	CUB
+/-	Thrust
+/-	CUDA Experimental
+/-	stdpar
+/-	python
+/-	CCCL C Parallel Library
+/-	Catch2Helper

🏃‍ Runner counts (total jobs: 162)

#	Runner
93	`linux-amd64-cpu16`
17	`linux-amd64-gpu-l4-latest-1`
17	`windows-amd64-cpu16`
10	`linux-arm64-cpu16`
9	`linux-amd64-gpu-h100-latest-1`
7	`linux-amd64-gpu-rtx2080-latest-1`
6	`linux-amd64-gpu-rtxa6000-latest-1`
3	`linux-amd64-gpu-rtx4090-latest-1`

github-actions · 2025-08-12T14:38:31Z

🟩 CI finished in 1h 51m: Pass: 100%/162 | Total: 3d 17h | Avg: 33m 05s | Max: 1h 49m | Hits: 76%/153019

🟩 cub: Pass: 100%/50 | Total: 2d 00h | Avg: 58m 28s | Max: 1h 49m | Hits: 65%/52810

🟩 cpu
  🟩 amd64              Pass: 100%/48  | Total:  1d 22h | Avg: 58m 21s | Max:  1h 49m | Hits:  65%/50238 
  🟩 arm64              Pass: 100%/2   | Total:  2h 02m | Avg:  1h 01m | Max:  1h 05m | Hits:  65%/2572  
🟩 ctk
  🟩 12.0               Pass: 100%/5   | Total:  5h 52m | Avg:  1h 10m | Max:  1h 49m | Hits:  65%/6326  
  🟩 12.9               Pass: 100%/45  | Total:  1d 18h | Avg: 57m 08s | Max:  1h 48m | Hits:  65%/46484 
🟩 cudacxx
  🟩 ClangCUDA19        Pass: 100%/2   | Total:  1h 05m | Avg: 32m 58s | Max: 33m 24s | Hits:  71%/2217  
  🟩 nvcc12.0           Pass: 100%/5   | Total:  5h 52m | Avg:  1h 10m | Max:  1h 49m | Hits:  65%/6326  
  🟩 nvcc12.9           Pass: 100%/43  | Total:  1d 17h | Avg: 58m 15s | Max:  1h 48m | Hits:  65%/44267 
🟩 cudacxx_family
  🟩 ClangCUDA          Pass: 100%/2   | Total:  1h 05m | Avg: 32m 58s | Max: 33m 24s | Hits:  71%/2217  
  🟩 nvcc               Pass: 100%/48  | Total:  1d 23h | Avg: 59m 32s | Max:  1h 49m | Hits:  65%/50593 
🟩 cxx
  🟩 Clang14            Pass: 100%/4   | Total:  4h 01m | Avg:  1h 00m | Max:  1h 04m | Hits:  65%/5146  
  🟩 Clang15            Pass: 100%/2   | Total:  2h 02m | Avg:  1h 01m | Max:  1h 03m | Hits:  65%/2569  
  🟩 Clang16            Pass: 100%/2   | Total:  1h 59m | Avg: 59m 30s | Max:  1h 00m | Hits:  65%/2569  
  🟩 Clang17            Pass: 100%/2   | Total:  2h 09m | Avg:  1h 04m | Max:  1h 09m | Hits:  65%/2569  
  🟩 Clang18            Pass: 100%/2   | Total:  1h 56m | Avg: 58m 27s | Max: 59m 47s | Hits:  65%/2569  
  🟩 Clang19            Pass: 100%/7   | Total:  4h 50m | Avg: 41m 28s | Max:  1h 02m | Hits:  67%/6071  
  🟩 GCC7               Pass: 100%/2   | Total:  2h 11m | Avg:  1h 05m | Max:  1h 06m | Hits:  65%/2572  
  🟩 GCC8               Pass: 100%/1   | Total:  1h 08m | Avg:  1h 08m | Max:  1h 08m | Hits:  65%/1286  
  🟩 GCC9               Pass: 100%/2   | Total:  2h 08m | Avg:  1h 04m | Max:  1h 09m | Hits:  65%/2572  
  🟩 GCC10              Pass: 100%/2   | Total:  2h 18m | Avg:  1h 09m | Max:  1h 12m | Hits:  65%/2573  
  🟩 GCC11              Pass: 100%/2   | Total:  2h 11m | Avg:  1h 05m | Max:  1h 07m | Hits:  65%/2569  
  🟩 GCC12              Pass: 100%/2   | Total:  2h 12m | Avg:  1h 06m | Max:  1h 08m | Hits:  65%/2569  
  🟩 GCC13              Pass: 100%/12  | Total:  7h 28m | Avg: 37m 22s | Max:  1h 05m | Hits:  65%/7719  
  🟩 MSVC14.29          Pass: 100%/2   | Total:  3h 32m | Avg:  1h 46m | Max:  1h 49m | Hits:  65%/2362  
  🟩 MSVC14.43          Pass: 100%/4   | Total:  5h 59m | Avg:  1h 29m | Max:  1h 48m | Hits:  65%/4724  
  🟩 NVHPC25.5          Pass: 100%/2   | Total:  2h 32m | Avg:  1h 16m | Max:  1h 16m | Hits:  64%/2371  
🟩 cxx_family
  🟩 Clang              Pass: 100%/19  | Total: 16h 59m | Avg: 53m 38s | Max:  1h 09m | Hits:  65%/21493 
  🟩 GCC                Pass: 100%/23  | Total: 19h 39m | Avg: 51m 17s | Max:  1h 12m | Hits:  65%/21860 
  🟩 MSVC               Pass: 100%/6   | Total:  9h 32m | Avg:  1h 35m | Max:  1h 49m | Hits:  65%/7086  
  🟩 NVHPC              Pass: 100%/2   | Total:  2h 32m | Avg:  1h 16m | Max:  1h 16m | Hits:  64%/2371  
🟩 gpu
  🟩 h100               Pass: 100%/3   | Total:  1h 18m | Avg: 26m 07s | Max: 30m 29s | Hits:  65%/1287  
  🟩 rtx2080            Pass: 100%/39  | Total:  1d 19h | Avg:  1h 06m | Max:  1h 49m | Hits:  65%/48951 
  🟩 rtxa6000           Pass: 100%/8   | Total:  4h 15m | Avg: 31m 57s | Max:  1h 04m | Hits:  65%/2572  
🟩 jobs
  🟩 Build              Pass: 100%/42  | Total:  1d 21h | Avg:  1h 05m | Max:  1h 49m | Hits:  65%/52810 
  🟩 DeviceLaunch       Pass: 100%/1   | Total: 23m 34s | Avg: 23m 34s | Max: 23m 34s
  🟩 GraphCapture       Pass: 100%/1   | Total: 14m 34s | Avg: 14m 34s | Max: 14m 34s
  🟩 HostLaunch         Pass: 100%/3   | Total:  1h 13m | Avg: 24m 34s | Max: 24m 57s
  🟩 TestGPU            Pass: 100%/3   | Total:  1h 04m | Avg: 21m 37s | Max: 23m 24s
🟩 sm
  🟩 90                 Pass: 100%/3   | Total:  1h 18m | Avg: 26m 07s | Max: 30m 29s | Hits:  65%/1287  
  🟩 90;90a             Pass: 100%/2   | Total:  2h 04m | Avg:  1h 02m | Max:  1h 18m | Hits:  65%/2468  
  🟩 100;120            Pass: 100%/2   | Total:  1h 59m | Avg: 59m 30s | Max:  1h 11m | Hits:  65%/2468  
🟩 std
  🟩 17                 Pass: 100%/21  | Total:  1d 00h | Avg:  1h 09m | Max:  1h 49m | Hits:  65%/26396 
  🟩 20                 Pass: 100%/29  | Total:  1d 00h | Avg: 50m 14s | Max:  1h 40m | Hits:  65%/26414

🟩 thrust: Pass: 100%/50 | Total: 1d 07h | Avg: 38m 15s | Max: 1h 26m | Hits: 80%/84139

🟩 cmake_options
  🟩 -DTHRUST_DISPATCH_TYPE=Force32bit Pass: 100%/2   | Total: 41m 30s | Avg: 20m 45s | Max: 36m 20s | Hits:  80%/1914  
🟩 cpu
  🟩 amd64              Pass: 100%/48  | Total:  1d 06h | Avg: 38m 20s | Max:  1h 26m | Hits:  80%/80312 
  🟩 arm64              Pass: 100%/2   | Total:  1h 12m | Avg: 36m 22s | Max: 38m 59s | Hits:  80%/3827  
🟩 ctk
  🟩 12.0               Pass: 100%/5   | Total:  3h 20m | Avg: 40m 06s | Max:  1h 05m | Hits:  79%/9560  
  🟩 12.9               Pass: 100%/45  | Total:  1d 04h | Avg: 38m 03s | Max:  1h 26m | Hits:  80%/74579 
🟩 cudacxx
  🟩 ClangCUDA19        Pass: 100%/2   | Total: 54m 13s | Avg: 27m 06s | Max: 27m 09s | Hits:  80%/3826  
  🟩 nvcc12.0           Pass: 100%/5   | Total:  3h 20m | Avg: 40m 06s | Max:  1h 05m | Hits:  79%/9560  
  🟩 nvcc12.9           Pass: 100%/43  | Total:  1d 03h | Avg: 38m 34s | Max:  1h 26m | Hits:  80%/70753 
🟩 cudacxx_family
  🟩 ClangCUDA          Pass: 100%/2   | Total: 54m 13s | Avg: 27m 06s | Max: 27m 09s | Hits:  80%/3826  
  🟩 nvcc               Pass: 100%/48  | Total:  1d 06h | Avg: 38m 43s | Max:  1h 26m | Hits:  80%/80313 
🟩 cxx
  🟩 Clang14            Pass: 100%/4   | Total:  2h 26m | Avg: 36m 34s | Max: 42m 37s | Hits:  80%/7652  
  🟩 Clang15            Pass: 100%/2   | Total:  1h 13m | Avg: 36m 45s | Max: 37m 54s | Hits:  80%/3826  
  🟩 Clang16            Pass: 100%/2   | Total:  1h 16m | Avg: 38m 06s | Max: 38m 46s | Hits:  80%/3826  
  🟩 Clang17            Pass: 100%/2   | Total:  1h 17m | Avg: 38m 49s | Max: 43m 13s | Hits:  80%/3826  
  🟩 Clang18            Pass: 100%/2   | Total:  1h 10m | Avg: 35m 12s | Max: 35m 24s | Hits:  80%/3826  
  🟩 Clang19            Pass: 100%/7   | Total:  2h 53m | Avg: 24m 47s | Max: 40m 23s | Hits:  80%/9565  
  🟩 GCC7               Pass: 100%/2   | Total:  1h 13m | Avg: 36m 59s | Max: 40m 08s | Hits:  80%/3828  
  🟩 GCC8               Pass: 100%/1   | Total: 41m 02s | Avg: 41m 02s | Max: 41m 02s | Hits:  80%/1914  
  🟩 GCC9               Pass: 100%/2   | Total:  1h 18m | Avg: 39m 07s | Max: 41m 51s | Hits:  80%/3828  
  🟩 GCC10              Pass: 100%/2   | Total:  1h 22m | Avg: 41m 06s | Max: 45m 04s | Hits:  80%/3828  
  🟩 GCC11              Pass: 100%/2   | Total:  1h 23m | Avg: 41m 49s | Max: 43m 59s | Hits:  80%/3828  
  🟩 GCC12              Pass: 100%/2   | Total:  1h 18m | Avg: 39m 14s | Max: 39m 32s | Hits:  80%/3828  
  🟩 GCC13              Pass: 100%/11  | Total:  4h 22m | Avg: 23m 49s | Max: 41m 24s | Hits:  80%/13398 
  🟩 MSVC14.29          Pass: 100%/2   | Total:  2h 13m | Avg:  1h 06m | Max:  1h 07m | Hits:  76%/3812  
  🟩 MSVC14.43          Pass: 100%/5   | Total:  4h 55m | Avg: 59m 00s | Max:  1h 11m | Hits:  80%/9530  
  🟩 NVHPC25.5          Pass: 100%/2   | Total:  2h 47m | Avg:  1h 23m | Max:  1h 26m | Hits:  70%/3824  
🟩 cxx_family
  🟩 Clang              Pass: 100%/19  | Total: 10h 17m | Avg: 32m 30s | Max: 43m 13s | Hits:  80%/32521 
  🟩 GCC                Pass: 100%/22  | Total: 11h 39m | Avg: 31m 48s | Max: 45m 04s | Hits:  80%/34452 
  🟩 MSVC               Pass: 100%/7   | Total:  7h 08m | Avg:  1h 01m | Max:  1h 11m | Hits:  79%/13342 
  🟩 NVHPC              Pass: 100%/2   | Total:  2h 47m | Avg:  1h 23m | Max:  1h 26m | Hits:  70%/3824  
🟩 gpu
  🟩 h100               Pass: 100%/2   | Total: 30m 53s | Avg: 15m 26s | Max: 23m 13s | Hits:  80%/1914  
  🟩 rtx2080            Pass: 100%/38  | Total:  1d 03h | Avg: 43m 14s | Max:  1h 26m | Hits:  79%/72672 
  🟩 rtx4090            Pass: 100%/10  | Total:  3h 59m | Avg: 23m 57s | Max:  1h 10m | Hits:  83%/9553  
🟩 jobs
  🟩 Build              Pass: 100%/43  | Total:  1d 06h | Avg: 42m 58s | Max:  1h 26m | Hits:  79%/82233 
  🟩 TestCPU            Pass: 100%/3   | Total: 41m 22s | Avg: 13m 47s | Max: 33m 03s | Hits:  99%/1906  
  🟩 TestGPU            Pass: 100%/4   | Total: 23m 49s | Avg:  5m 57s | Max:  7m 40s
🟩 sm
  🟩 90                 Pass: 100%/2   | Total: 30m 53s | Avg: 15m 26s | Max: 23m 13s | Hits:  80%/1914  
  🟩 90;90a             Pass: 100%/2   | Total:  1h 32m | Avg: 46m 24s | Max:  1h 02m | Hits:  78%/3820  
  🟩 100;120            Pass: 100%/2   | Total:  1h 26m | Avg: 43m 21s | Max: 57m 47s | Hits:  78%/3820  
🟩 std
  🟩 17                 Pass: 100%/21  | Total: 15h 36m | Avg: 44m 36s | Max:  1h 21m | Hits:  79%/40160 
  🟩 20                 Pass: 100%/27  | Total: 15h 35m | Avg: 34m 38s | Max:  1h 26m | Hits:  80%/42065

🟩 cudax: Pass: 100%/28 | Total: 3h 39m | Avg: 7m 49s | Max: 14m 33s | Hits: 89%/15390

🟩 cpu
  🟩 amd64              Pass: 100%/24  | Total:  3h 17m | Avg:  8m 13s | Max: 14m 33s | Hits:  89%/13018 
  🟩 arm64              Pass: 100%/4   | Total: 21m 36s | Avg:  5m 24s | Max:  5m 57s | Hits:  89%/2372  
🟩 ctk
  🟩 12.0               Pass: 100%/3   | Total: 24m 47s | Avg:  8m 15s | Max: 14m 33s | Hits:  87%/1474  
  🟩 12.9               Pass: 100%/25  | Total:  3h 14m | Avg:  7m 46s | Max: 14m 32s | Hits:  90%/13916 
🟩 cudacxx
  🟩 nvcc12.0           Pass: 100%/3   | Total: 24m 47s | Avg:  8m 15s | Max: 14m 33s | Hits:  87%/1474  
  🟩 nvcc12.9           Pass: 100%/25  | Total:  3h 14m | Avg:  7m 46s | Max: 14m 32s | Hits:  90%/13916 
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/28  | Total:  3h 39m | Avg:  7m 49s | Max: 14m 33s | Hits:  89%/15390 
🟩 cxx
  🟩 Clang14            Pass: 100%/2   | Total: 10m 13s | Avg:  5m 06s | Max:  5m 51s | Hits:  90%/1188  
  🟩 Clang15            Pass: 100%/1   | Total:  5m 42s | Avg:  5m 42s | Max:  5m 42s | Hits:  89%/593   
  🟩 Clang16            Pass: 100%/1   | Total:  5m 42s | Avg:  5m 42s | Max:  5m 42s | Hits:  89%/593   
  🟩 Clang17            Pass: 100%/1   | Total:  6m 09s | Avg:  6m 09s | Max:  6m 09s | Hits:  89%/593   
  🟩 Clang18            Pass: 100%/1   | Total:  5m 58s | Avg:  5m 58s | Max:  5m 58s | Hits:  89%/593   
  🟩 Clang19            Pass: 100%/4   | Total: 26m 07s | Avg:  6m 31s | Max: 10m 35s | Hits:  92%/2372  
  🟩 GCC10              Pass: 100%/2   | Total: 12m 34s | Avg:  6m 17s | Max:  6m 42s | Hits:  89%/1188  
  🟩 GCC11              Pass: 100%/1   | Total:  5m 49s | Avg:  5m 49s | Max:  5m 49s | Hits:  89%/593   
  🟩 GCC12              Pass: 100%/1   | Total:  6m 08s | Avg:  6m 08s | Max:  6m 08s | Hits:  89%/593   
  🟩 GCC13              Pass: 100%/8   | Total: 57m 00s | Avg:  7m 07s | Max: 11m 52s | Hits:  92%/4744  
  🟩 MSVC14.39          Pass: 100%/1   | Total: 14m 33s | Avg: 14m 33s | Max: 14m 33s | Hits:  77%/288   
  🟩 MSVC14.43          Pass: 100%/3   | Total: 41m 47s | Avg: 13m 55s | Max: 14m 32s | Hits:  76%/870   
  🟩 NVHPC25.5          Pass: 100%/2   | Total: 21m 18s | Avg: 10m 39s | Max: 11m 00s | Hits:  87%/1182  
🟩 cxx_family
  🟩 Clang              Pass: 100%/10  | Total: 59m 51s | Avg:  5m 59s | Max: 10m 35s | Hits:  91%/5932  
  🟩 GCC                Pass: 100%/12  | Total:  1h 21m | Avg:  6m 47s | Max: 11m 52s | Hits:  91%/7118  
  🟩 MSVC               Pass: 100%/4   | Total: 56m 20s | Avg: 14m 05s | Max: 14m 33s | Hits:  76%/1158  
  🟩 NVHPC              Pass: 100%/2   | Total: 21m 18s | Avg: 10m 39s | Max: 11m 00s | Hits:  87%/1182  
🟩 gpu
  🟩 h100               Pass: 100%/2   | Total: 14m 15s | Avg:  7m 07s | Max:  8m 57s | Hits:  94%/1186  
  🟩 rtx2080            Pass: 100%/26  | Total:  3h 24m | Avg:  7m 52s | Max: 14m 33s | Hits:  89%/14204 
🟩 jobs
  🟩 Build              Pass: 100%/25  | Total:  3h 07m | Avg:  7m 30s | Max: 14m 33s | Hits:  88%/13611 
  🟩 Test               Pass: 100%/3   | Total: 31m 24s | Avg: 10m 28s | Max: 11m 52s | Hits:  99%/1779  
🟩 sm
  🟩 90                 Pass: 100%/2   | Total: 14m 15s | Avg:  7m 07s | Max:  8m 57s | Hits:  94%/1186  
  🟩 90;90a             Pass: 100%/2   | Total: 20m 24s | Avg: 10m 12s | Max: 13m 55s | Hits:  85%/883   
  🟩 100;120            Pass: 100%/2   | Total: 19m 19s | Avg:  9m 39s | Max: 13m 20s | Hits:  85%/883   
🟩 std
  🟩 17                 Pass: 100%/3   | Total: 21m 08s | Avg:  7m 02s | Max: 10m 18s | Hits:  88%/1777  
  🟩 20                 Pass: 100%/25  | Total:  3h 17m | Avg:  7m 54s | Max: 14m 33s | Hits:  89%/13613

🟩 python: Pass: 100%/22 | Total: 3h 41m | Avg: 10m 02s | Max: 19m 34s

🟩 cpu
  🟩 amd64              Pass: 100%/22  | Total:  3h 41m | Avg: 10m 02s | Max: 19m 34s
🟩 ctk
  🟩 12.5               Pass: 100%/6   | Total: 42m 49s | Avg:  7m 08s | Max: 13m 51s
  🟩 12.8               Pass: 100%/2   | Total: 38m 23s | Avg: 19m 11s | Max: 19m 30s
  🟩 12.9               Pass: 100%/14  | Total:  2h 19m | Avg:  9m 59s | Max: 19m 34s
🟩 cudacxx
  🟩 nvcc12.5           Pass: 100%/6   | Total: 42m 49s | Avg:  7m 08s | Max: 13m 51s
  🟩 nvcc12.8           Pass: 100%/2   | Total: 38m 23s | Avg: 19m 11s | Max: 19m 30s
  🟩 nvcc12.9           Pass: 100%/14  | Total:  2h 19m | Avg:  9m 59s | Max: 19m 34s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/22  | Total:  3h 41m | Avg: 10m 02s | Max: 19m 34s
🟩 cxx
  🟩 GCC13              Pass: 100%/22  | Total:  3h 41m | Avg: 10m 02s | Max: 19m 34s
🟩 cxx_family
  🟩 GCC                Pass: 100%/22  | Total:  3h 41m | Avg: 10m 02s | Max: 19m 34s
🟩 gpu
  🟩 h100               Pass: 100%/4   | Total: 38m 24s | Avg:  9m 36s | Max: 16m 25s
  🟩 l4                 Pass: 100%/18  | Total:  3h 02m | Avg: 10m 08s | Max: 19m 34s
🟩 jobs
  🟩 Build cuda.cccl    Pass: 100%/2   | Total: 19m 28s | Avg:  9m 44s | Max:  9m 50s
  🟩 Test cuda.cccl.cooperative Pass: 100%/5   | Total:  1h 06m | Avg: 13m 17s | Max: 13m 51s
  🟩 Test cuda.cccl.examples Pass: 100%/5   | Total: 23m 08s | Avg:  4m 37s | Max:  5m 49s
  🟩 Test cuda.cccl.headers Pass: 100%/5   | Total: 18m 53s | Avg:  3m 46s | Max:  4m 08s
  🟩 Test cuda.cccl.parallel Pass: 100%/5   | Total:  1h 33m | Avg: 18m 37s | Max: 19m 34s
🟩 py_version
  🟩 3.10               Pass: 100%/9   | Total:  1h 31m | Avg: 10m 10s | Max: 19m 30s
  🟩 3.13               Pass: 100%/13  | Total:  2h 09m | Avg:  9m 57s | Max: 19m 34s

🟩 cccl_c_parallel: Pass: 100%/4 | Total: 51m 21s | Avg: 12m 50s | Max: 17m 23s | Hits: 98%/680

🟩 cpu
  🟩 amd64              Pass: 100%/4   | Total: 51m 21s | Avg: 12m 50s | Max: 17m 23s | Hits:  98%/680   
🟩 ctk
  🟩 12.9               Pass: 100%/4   | Total: 51m 21s | Avg: 12m 50s | Max: 17m 23s | Hits:  98%/680   
🟩 cudacxx
  🟩 nvcc12.9           Pass: 100%/4   | Total: 51m 21s | Avg: 12m 50s | Max: 17m 23s | Hits:  98%/680   
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/4   | Total: 51m 21s | Avg: 12m 50s | Max: 17m 23s | Hits:  98%/680   
🟩 cxx
  🟩 GCC13              Pass: 100%/4   | Total: 51m 21s | Avg: 12m 50s | Max: 17m 23s | Hits:  98%/680   
🟩 cxx_family
  🟩 GCC                Pass: 100%/4   | Total: 51m 21s | Avg: 12m 50s | Max: 17m 23s | Hits:  98%/680   
🟩 gpu
  🟩 h100               Pass: 100%/1   | Total: 16m 07s | Avg: 16m 07s | Max: 16m 07s | Hits:  98%/170   
  🟩 l4                 Pass: 100%/1   | Total: 17m 23s | Avg: 17m 23s | Max: 17m 23s | Hits:  98%/170   
  🟩 rtx2080            Pass: 100%/2   | Total: 17m 51s | Avg:  8m 55s | Max: 15m 19s | Hits:  97%/340   
🟩 jobs
  🟩 Build              Pass: 100%/1   | Total:  2m 32s | Avg:  2m 32s | Max:  2m 32s | Hits:  95%/170   
  🟩 Test               Pass: 100%/3   | Total: 48m 49s | Avg: 16m 16s | Max: 17m 23s | Hits:  98%/510

🟩 packaging: Pass: 100%/4 | Total: 16m 37s | Avg: 4m 09s | Max: 4m 45s

🟩 cpu
  🟩 amd64              Pass: 100%/4   | Total: 16m 37s | Avg:  4m 09s | Max:  4m 45s
🟩 ctk
  🟩 12.0               Pass: 100%/2   | Total:  8m 30s | Avg:  4m 15s | Max:  4m 45s
  🟩 12.9               Pass: 100%/2   | Total:  8m 07s | Avg:  4m 03s | Max:  4m 05s
🟩 cudacxx
  🟩 nvcc12.0           Pass: 100%/2   | Total:  8m 30s | Avg:  4m 15s | Max:  4m 45s
  🟩 nvcc12.9           Pass: 100%/2   | Total:  8m 07s | Avg:  4m 03s | Max:  4m 05s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/4   | Total: 16m 37s | Avg:  4m 09s | Max:  4m 45s
🟩 cxx
  🟩 Clang14            Pass: 100%/1   | Total:  3m 45s | Avg:  3m 45s | Max:  3m 45s
  🟩 Clang19            Pass: 100%/1   | Total:  4m 02s | Avg:  4m 02s | Max:  4m 02s
  🟩 GCC12              Pass: 100%/1   | Total:  4m 45s | Avg:  4m 45s | Max:  4m 45s
  🟩 GCC13              Pass: 100%/1   | Total:  4m 05s | Avg:  4m 05s | Max:  4m 05s
🟩 cxx_family
  🟩 Clang              Pass: 100%/2   | Total:  7m 47s | Avg:  3m 53s | Max:  4m 02s
  🟩 GCC                Pass: 100%/2   | Total:  8m 50s | Avg:  4m 25s | Max:  4m 45s
🟩 gpu
  🟩 rtx2080            Pass: 100%/4   | Total: 16m 37s | Avg:  4m 09s | Max:  4m 45s
🟩 jobs
  🟩 Test               Pass: 100%/4   | Total: 16m 37s | Avg:  4m 09s | Max:  4m 45s

🟩 stdpar: Pass: 100%/4 | Total: 16m 49s | Avg: 4m 12s | Max: 4m 27s

🟩 cpu
  🟩 amd64              Pass: 100%/2   | Total:  8m 36s | Avg:  4m 18s | Max:  4m 27s
  🟩 arm64              Pass: 100%/2   | Total:  8m 13s | Avg:  4m 06s | Max:  4m 14s
🟩 ctk
  🟩 12.9               Pass: 100%/4   | Total: 16m 49s | Avg:  4m 12s | Max:  4m 27s
🟩 cudacxx
  🟩 nvcc12.9           Pass: 100%/4   | Total: 16m 49s | Avg:  4m 12s | Max:  4m 27s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/4   | Total: 16m 49s | Avg:  4m 12s | Max:  4m 27s
🟩 cxx
  🟩 NVHPC25.5          Pass: 100%/4   | Total: 16m 49s | Avg:  4m 12s | Max:  4m 27s
🟩 cxx_family
  🟩 NVHPC              Pass: 100%/4   | Total: 16m 49s | Avg:  4m 12s | Max:  4m 27s
🟩 gpu
  🟩 rtx2080            Pass: 100%/4   | Total: 16m 49s | Avg:  4m 12s | Max:  4m 27s
🟩 jobs
  🟩 Build              Pass: 100%/4   | Total: 16m 49s | Avg:  4m 12s | Max:  4m 27s
🟩 std
  🟩 17                 Pass: 100%/2   | Total:  8m 23s | Avg:  4m 11s | Max:  4m 14s
  🟩 20                 Pass: 100%/2   | Total:  8m 26s | Avg:  4m 13s | Max:  4m 27s

👃 Inspect Changes

Modifications in project?

	Project
	CCCL Infrastructure
	CCCL Packaging
	libcu++
+/-	CUB
	Thrust
	CUDA Experimental
	stdpar
	python
	CCCL C Parallel Library
	Catch2Helper

Modifications in project or dependencies?

	Project
	CCCL Infrastructure
+/-	CCCL Packaging
	libcu++
+/-	CUB
+/-	Thrust
+/-	CUDA Experimental
+/-	stdpar
+/-	python
+/-	CCCL C Parallel Library
+/-	Catch2Helper

🏃‍ Runner counts (total jobs: 162)

#	Runner
93	`linux-amd64-cpu16`
17	`linux-amd64-gpu-l4-latest-1`
17	`windows-amd64-cpu16`
10	`linux-arm64-cpu16`
9	`linux-amd64-gpu-h100-latest-1`
7	`linux-amd64-gpu-rtx2080-latest-1`
6	`linux-amd64-gpu-rtxa6000-latest-1`
3	`linux-amd64-gpu-rtx4090-latest-1`

…A#5440) * adds vsmem to reduce_by_key * adds tests for vsmem * fixes rle, which does not support vsmem yet * addresses review comments

* Adds support for large number of items to `DeviceRunLengthEncode::NonTrivialRuns` (#5252) * streaming non trivial runs * change global offset computation * fixes style * integrate latest bench and test changes * addresses review comments * replaces getters with member var * Add support for virtual shared memory to `DispatchReduceByKey` (#5440) * adds vsmem to reduce_by_key * adds tests for vsmem * fixes rle, which does not support vsmem yet * addresses review comments * Fixes non-default-constructible iterators for large number of items types in `DeviceRunLengthEncode::Encode` (#6451) * adds tests for non default constructible iterators * fixes non default constructible iterators in rle * Simplify generation of `streaming_context` for run_length_encode * Reinstate regression test * Revert test/benchmark changes Co-authored-by: Elias Stehle <3958403+elstehle@users.noreply.github.com> Co-authored-by: Michael Schellenberger Costa <miscco@nvidia.com> Co-authored-by: Michael Schellenberger Costa <miscco@nvidia.com>

elstehle added 2 commits August 4, 2025 22:07

adds vsmem to reduce_by_key

7da9a34

adds tests for vsmem

2bb4653

elstehle requested a review from a team as a code owner August 6, 2025 08:09

elstehle requested a review from miscco August 6, 2025 08:09

github-project-automation bot added this to CCCL Aug 6, 2025

github-project-automation bot moved this to Todo in CCCL Aug 6, 2025

cccl-authenticator-app bot moved this from Todo to In Review in CCCL Aug 6, 2025

fixes rle, which does not support vsmem yet

1209cd2

bernhardmgruber reviewed Aug 6, 2025

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cub/test/catch2_test_device_reduce_by_key_vsmem.cu Outdated Show resolved Hide resolved

bernhardmgruber approved these changes Aug 6, 2025

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addresses review comments

2bc5315

elstehle force-pushed the enh/vsmem-reduce-by-key branch from 18b5fec to 2bc5315 Compare August 6, 2025 13:26

Merge branch 'main' into enh/vsmem-reduce-by-key

fe38b9f

elstehle enabled auto-merge (squash) August 12, 2025 12:46

elstehle merged commit 5edf751 into NVIDIA:main Aug 12, 2025
172 checks passed

github-project-automation bot moved this from In Review to Done in CCCL Aug 12, 2025

bdice mentioned this pull request Nov 21, 2025

Backport changes for XGBoost compatibility #6727

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github-actions bot commented Aug 6, 2025

🟨 python: Pass: 36%/22 | Total: 1h 55m | Avg: 5m 14s | Max: 9m 47s

🟩 cub: Pass: 100%/50 | Total: 1d 08h | Avg: 38m 59s | Max: 1h 31m | Hits: 79%/52560

🟩 thrust: Pass: 100%/50 | Total: 15h 29m | Avg: 18m 34s | Max: 1h 01m | Hits: 94%/84139

🟩 cudax: Pass: 100%/28 | Total: 3h 16m | Avg: 7m 00s | Max: 31m 37s | Hits: 98%/15342

🟩 cccl_c_parallel: Pass: 100%/4 | Total: 2h 45m | Avg: 41m 18s | Max: 2h 11m | Hits: 98%/668

🟩 packaging: Pass: 100%/4 | Total: 26m 04s | Avg: 6m 31s | Max: 7m 59s

🟩 stdpar: Pass: 100%/4 | Total: 15m 17s | Avg: 3m 49s | Max: 4m 14s

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🏃‍ Runner counts (total jobs: 162)

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🟨 python: Pass: 36%/22 | Total: 1h 54m | Avg: 5m 11s | Max: 9m 38s

🟩 cub: Pass: 100%/50 | Total: 11h 05m | Avg: 13m 18s | Max: 35m 03s | Hits: 99%/52560

🟩 thrust: Pass: 100%/50 | Total: 8h 50m | Avg: 10m 37s | Max: 33m 02s | Hits: 99%/84139

🟩 cudax: Pass: 100%/28 | Total: 2h 35m | Avg: 5m 32s | Max: 11m 52s | Hits: 98%/15342

🟩 cccl_c_parallel: Pass: 100%/4 | Total: 2h 51m | Avg: 42m 47s | Max: 2h 13m | Hits: 98%/668

🟩 packaging: Pass: 100%/4 | Total: 31m 18s | Avg: 7m 49s | Max: 13m 28s

🟩 stdpar: Pass: 100%/4 | Total: 16m 07s | Avg: 4m 01s | Max: 4m 27s

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🏃‍ Runner counts (total jobs: 162)

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github-actions bot commented Aug 12, 2025

🟩 cub: Pass: 100%/50 | Total: 2d 00h | Avg: 58m 28s | Max: 1h 49m | Hits: 65%/52810

🟩 thrust: Pass: 100%/50 | Total: 1d 07h | Avg: 38m 15s | Max: 1h 26m | Hits: 80%/84139

🟩 cudax: Pass: 100%/28 | Total: 3h 39m | Avg: 7m 49s | Max: 14m 33s | Hits: 89%/15390

🟩 python: Pass: 100%/22 | Total: 3h 41m | Avg: 10m 02s | Max: 19m 34s

🟩 cccl_c_parallel: Pass: 100%/4 | Total: 51m 21s | Avg: 12m 50s | Max: 17m 23s | Hits: 98%/680

🟩 packaging: Pass: 100%/4 | Total: 16m 37s | Avg: 4m 09s | Max: 4m 45s

🟩 stdpar: Pass: 100%/4 | Total: 16m 49s | Avg: 4m 12s | Max: 4m 27s

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elstehle commented Aug 6, 2025 •

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elstehle commented Aug 6, 2025 •

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