c.parallel: device wrappers as code, not format strings by griwes · Pull Request #3439 · NVIDIA/cccl

griwes · 2025-01-17T17:26:19Z

Description

So far, even with the recent refactoring, the code for the device wrappers lived in format strings. This has a number of downsides, and this PR aims to resolve those.

The wrappers are now actual C++ templates, can be edited with the help of LSP and code formatters, and attempts to obtain their type names will now do some rudimentary type checking in the host code. This is not perfect, as things like cccl_op_t carry basically no type information, but is an improvement over the status quo.

Also added is a CMake target that bundles all the wrappers into a file that contains their contents, preprocessed to a degree, wrapped into a string, so all the code can be simply added into the NVRTC TU wherever needed.

Resolves #2525
Resolves #2665
Resolves #2918

Checklist

New or existing tests cover these changes.
The documentation is up to date with these changes.

github-actions · 2025-01-17T18:20:03Z

🟩 CI finished in 51m 21s: Pass: 100%/3 | Total: 1h 03m | Avg: 21m 13s | Max: 50m 58s

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#	Runner
2	`linux-amd64-gpu-v100-latest-1`
1	`linux-amd64-cpu16`

shwina

I can't provide feedback on the implementation, but it's definitely a quality-of-life improvement to be able to define the kernels in code rather than as strings.

…-wrappers

github-actions · 2025-02-04T03:37:34Z

🟩 CI finished in 28m 38s: Pass: 100%/3 | Total: 32m 36s | Avg: 10m 52s | Max: 25m 09s

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🏃‍ Runner counts (total jobs: 3)

#	Runner
2	`linux-amd64-gpu-rtx2080-latest-1`
1	`linux-amd64-cpu16`

gevtushenko

That's quite a chain of indirections

…-wrappers

github-actions · 2025-02-21T22:11:23Z

🟩 CI finished in 43m 37s: Pass: 100%/3 | Total: 55m 32s | Avg: 18m 30s | Max: 40m 15s | Hits: 98%/310

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🏃‍ Runner counts (total jobs: 3)

#	Runner
2	`linux-amd64-gpu-rtx2080-latest-1`
1	`linux-amd64-cpu16`

…-wrappers

griwes · 2025-03-06T08:12:08Z

@robertmaynard I believe I addressed your comments.

github-actions · 2025-03-06T09:12:40Z

🟩 CI finished in 1h 00m: Pass: 100%/3 | Total: 1h 17m | Avg: 25m 58s | Max: 58m 36s | Hits: 98%/310

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🏃‍ Runner counts (total jobs: 3)

#	Runner
2	`linux-amd64-gpu-rtx2080-latest-1`
1	`linux-amd64-cpu16`

leofang · 2025-03-07T02:53:25Z

cc @NVIDIA/cccl-python-codeowners for vis

github-actions · 2025-03-07T03:51:21Z

🟩 CI finished in 1h 02m: Pass: 100%/3 | Total: 1h 16m | Avg: 25m 24s | Max: 1h 01m | Hits: 98%/310

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🏃‍ Runner counts (total jobs: 3)

#	Runner
2	`linux-amd64-gpu-rtx2080-latest-1`
1	`linux-amd64-cpu16`

oleksandr-pavlyk · 2025-03-07T22:06:23Z

+struct template_id
+{};
+
+struct specialization


Could this struct be renamed to specialization_t or specialization_st to make it easier to realize that it describes a type. Ease mental burden of parsing the code.

rwgk

I found one trivial grammar error in the Readme.

The code complexity is amazing.

griwes · 2025-03-18T00:53:25Z

@robertmaynard can you please re-review?

…-wrappers

github-actions · 2025-04-07T13:40:59Z

🟩 CI finished in 1h 31m: Pass: 100%/3 | Total: 1h 51m | Avg: 37m 00s | Max: 1h 30m | Hits: 96%/330

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🏃‍ Runner counts (total jobs: 3)

#	Runner
2	`linux-amd64-gpu-rtx2080-latest-1`
1	`linux-amd64-cpu16`

griwes · 2025-04-09T16:30:45Z

@NVIDIA/cccl-cmake-codeowners ping for a re-review

alliepiper

Only reviewed CMake changes.

The features used here aren't an area of CMake I'm very familiar with, but based on @robertmaynard's comments and my reading of the relevant docs this LGTM.

Approving.

…-wrappers

github-actions · 2025-04-21T19:20:05Z

🟩 CI finished in 41m 18s: Pass: 100%/5 | Total: 1h 07m | Avg: 13m 32s | Max: 36m 37s | Hits: 98%/326

🟩 python: Pass: 100%/3 | Total: 28m 26s | Avg: 9m 28s | Max: 19m 04s

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  🟩 GCC13              Pass: 100%/3   | Total: 28m 26s | Avg:  9m 28s | Max: 19m 04s
🟩 cxx_family
  🟩 GCC                Pass: 100%/3   | Total: 28m 26s | Avg:  9m 28s | Max: 19m 04s
🟩 gpu
  🟩 rtx2080            Pass: 100%/3   | Total: 28m 26s | Avg:  9m 28s | Max: 19m 04s
🟩 jobs
  🟩 cuda.cccl          Pass: 100%/1   | Total:  2m 49s | Avg:  2m 49s | Max:  2m 49s
  🟩 cuda.cooperative   Pass: 100%/1   | Total: 19m 04s | Avg: 19m 04s | Max: 19m 04s
  🟩 cuda.parallel      Pass: 100%/1   | Total:  6m 33s | Avg:  6m 33s | Max:  6m 33s

🟩 cccl_c_parallel: Pass: 100%/2 | Total: 39m 17s | Avg: 19m 38s | Max: 36m 37s | Hits: 98%/326

🟩 cpu
  🟩 amd64              Pass: 100%/2   | Total: 39m 17s | Avg: 19m 38s | Max: 36m 37s | Hits:  98%/326   
🟩 ctk
  🟩 12.8               Pass: 100%/2   | Total: 39m 17s | Avg: 19m 38s | Max: 36m 37s | Hits:  98%/326   
🟩 cudacxx
  🟩 nvcc12.8           Pass: 100%/2   | Total: 39m 17s | Avg: 19m 38s | Max: 36m 37s | Hits:  98%/326   
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/2   | Total: 39m 17s | Avg: 19m 38s | Max: 36m 37s | Hits:  98%/326   
🟩 cxx
  🟩 GCC13              Pass: 100%/2   | Total: 39m 17s | Avg: 19m 38s | Max: 36m 37s | Hits:  98%/326   
🟩 cxx_family
  🟩 GCC                Pass: 100%/2   | Total: 39m 17s | Avg: 19m 38s | Max: 36m 37s | Hits:  98%/326   
🟩 gpu
  🟩 rtx2080            Pass: 100%/2   | Total: 39m 17s | Avg: 19m 38s | Max: 36m 37s | Hits:  98%/326   
🟩 jobs
  🟩 Build              Pass: 100%/1   | Total:  2m 40s | Avg:  2m 40s | Max:  2m 40s | Hits:  98%/163   
  🟩 Test               Pass: 100%/1   | Total: 36m 37s | Avg: 36m 37s | Max: 36m 37s | Hits:  98%/163

👃 Inspect Changes

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	Project
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	libcu++
	CUB
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	python
+/-	CCCL C Parallel Library
	Catch2Helper

Modifications in project or dependencies?

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

🏃‍ Runner counts (total jobs: 5)

#	Runner
4	`linux-amd64-gpu-rtx2080-latest-1`
1	`linux-amd64-cpu16`

github-actions · 2025-04-21T20:27:15Z

🟩 CI finished in 40m 19s: Pass: 100%/5 | Total: 1h 04m | Avg: 12m 56s | Max: 32m 28s | Hits: 55%/326

🟩 python: Pass: 100%/3 | Total: 28m 48s | Avg: 9m 36s | Max: 16m 12s

🟩 cpu
  🟩 amd64              Pass: 100%/3   | Total: 28m 48s | Avg:  9m 36s | Max: 16m 12s
🟩 ctk
  🟩 12.8               Pass: 100%/3   | Total: 28m 48s | Avg:  9m 36s | Max: 16m 12s
🟩 cudacxx
  🟩 nvcc12.8           Pass: 100%/3   | Total: 28m 48s | Avg:  9m 36s | Max: 16m 12s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/3   | Total: 28m 48s | Avg:  9m 36s | Max: 16m 12s
🟩 cxx
  🟩 GCC13              Pass: 100%/3   | Total: 28m 48s | Avg:  9m 36s | Max: 16m 12s
🟩 cxx_family
  🟩 GCC                Pass: 100%/3   | Total: 28m 48s | Avg:  9m 36s | Max: 16m 12s
🟩 gpu
  🟩 rtx2080            Pass: 100%/3   | Total: 28m 48s | Avg:  9m 36s | Max: 16m 12s
🟩 jobs
  🟩 cuda.cccl          Pass: 100%/1   | Total:  5m 53s | Avg:  5m 53s | Max:  5m 53s
  🟩 cuda.cooperative   Pass: 100%/1   | Total: 16m 12s | Avg: 16m 12s | Max: 16m 12s
  🟩 cuda.parallel      Pass: 100%/1   | Total:  6m 43s | Avg:  6m 43s | Max:  6m 43s

🟩 cccl_c_parallel: Pass: 100%/2 | Total: 35m 55s | Avg: 17m 57s | Max: 32m 28s | Hits: 55%/326

🟩 cpu
  🟩 amd64              Pass: 100%/2   | Total: 35m 55s | Avg: 17m 57s | Max: 32m 28s | Hits:  55%/326   
🟩 ctk
  🟩 12.8               Pass: 100%/2   | Total: 35m 55s | Avg: 17m 57s | Max: 32m 28s | Hits:  55%/326   
🟩 cudacxx
  🟩 nvcc12.8           Pass: 100%/2   | Total: 35m 55s | Avg: 17m 57s | Max: 32m 28s | Hits:  55%/326   
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/2   | Total: 35m 55s | Avg: 17m 57s | Max: 32m 28s | Hits:  55%/326   
🟩 cxx
  🟩 GCC13              Pass: 100%/2   | Total: 35m 55s | Avg: 17m 57s | Max: 32m 28s | Hits:  55%/326   
🟩 cxx_family
  🟩 GCC                Pass: 100%/2   | Total: 35m 55s | Avg: 17m 57s | Max: 32m 28s | Hits:  55%/326   
🟩 gpu
  🟩 rtx2080            Pass: 100%/2   | Total: 35m 55s | Avg: 17m 57s | Max: 32m 28s | Hits:  55%/326   
🟩 jobs
  🟩 Build              Pass: 100%/1   | Total:  3m 27s | Avg:  3m 27s | Max:  3m 27s | Hits:  11%/163   
  🟩 Test               Pass: 100%/1   | Total: 32m 28s | Avg: 32m 28s | Max: 32m 28s | Hits:  98%/163

👃 Inspect Changes

Modifications in project?

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

Modifications in project or dependencies?

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

🏃‍ Runner counts (total jobs: 5)

#	Runner
4	`linux-amd64-gpu-rtx2080-latest-1`
1	`linux-amd64-cpu16`

c.parallel: device wrappers as code, not format strings

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griwes added the feature request label Jan 17, 2025

griwes self-assigned this Jan 17, 2025

griwes requested review from a team as code owners January 17, 2025 17:26

griwes requested review from bernhardmgruber, gevtushenko, shwina and wmaxey January 17, 2025 17:26

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griwes added 2 commits February 3, 2025 19:01

Add initial docs to jit_templates.

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griwes added 2 commits February 21, 2025 13:23

Merge remote-tracking branch 'origin/main' into feature/better-device…

33368d4

…-wrappers

Address review comments.

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griwes mentioned this pull request Mar 4, 2025

Folding for <details> pwntester/octo.nvim#914

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Comment thread c/parallel/src/jit_templates/CMakeLists.txt

Comment thread c/parallel/src/jit_templates/CMakeLists.txt

github-project-automation Bot moved this from In Review to In Progress in CCCL Mar 5, 2025

griwes added 2 commits March 5, 2025 14:58

Merge remote-tracking branch 'origin/main' into feature/better-device…

f7b396e

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Address review comments; make nvcc happier.

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robertmaynard requested changes Mar 6, 2025

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Comment thread c/parallel/src/jit_templates/CMakeLists.txt Outdated

Address review comments, this time less incorrectly.

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griwes requested a review from robertmaynard March 7, 2025 21:39

oleksandr-pavlyk reviewed Mar 7, 2025

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oleksandr-pavlyk approved these changes Mar 7, 2025

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griwes added 2 commits April 7, 2025 14:04

Merge remote-tracking branch 'origin/main' into feature/better-device…

778a46a

…-wrappers

Typo fix in readme.

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jrhemstad moved this from In Progress to In Review in CCCL Apr 9, 2025

jrhemstad requested a review from alliepiper April 9, 2025 16:36

alliepiper approved these changes Apr 9, 2025

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Merge remote-tracking branch 'origin/main' into feature/better-device…

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…-wrappers

griwes enabled auto-merge (squash) April 21, 2025 18:37

Formatting fix.

4671019

griwes merged commit 9f254d5 into NVIDIA:main Apr 21, 2025

github-project-automation Bot moved this from In Review to Done in CCCL Apr 21, 2025

griwes deleted the feature/better-device-wrappers branch April 21, 2025 20:49

griwes mentioned this pull request Apr 23, 2025

Use device functions that accept pointer arguments in ccc.cl and cuda.parallel #4249

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griwes commented Jan 17, 2025

Description

Checklist

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github-actions Bot commented Jan 17, 2025

🟩 cccl_c_parallel: Pass: 100%/2 | Total: 12m 42s | Avg: 6m 21s | Max: 10m 39s

🟩 python: Pass: 100%/1 | Total: 50m 58s | Avg: 50m 58s | Max: 50m 58s

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github-actions Bot commented Feb 4, 2025

🟩 cccl_c_parallel: Pass: 100%/2 | Total: 7m 27s | Avg: 3m 43s | Max: 4m 59s

🟩 python: Pass: 100%/1 | Total: 25m 09s | Avg: 25m 09s | Max: 25m 09s

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github-actions Bot commented Feb 21, 2025

🟩 cccl_c_parallel: Pass: 100%/2 | Total: 15m 17s | Avg: 7m 38s | Max: 12m 45s | Hits: 98%/310

🟩 python: Pass: 100%/1 | Total: 40m 15s | Avg: 40m 15s | Max: 40m 15s

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griwes commented Mar 6, 2025

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github-actions Bot commented Mar 6, 2025

🟩 cccl_c_parallel: Pass: 100%/2 | Total: 19m 20s | Avg: 9m 40s | Max: 16m 41s | Hits: 98%/310

🟩 python: Pass: 100%/1 | Total: 58m 36s | Avg: 58m 36s | Max: 58m 36s

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github-actions Bot commented Mar 7, 2025

🟩 cccl_c_parallel: Pass: 100%/2 | Total: 14m 50s | Avg: 7m 25s | Max: 12m 29s | Hits: 98%/310

🟩 python: Pass: 100%/1 | Total: 1h 01m | Avg: 1h 01m | Max: 1h 01m

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griwes commented Mar 18, 2025

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github-actions Bot commented Apr 7, 2025

🟩 cccl_c_parallel: Pass: 100%/2 | Total: 20m 11s | Avg: 10m 05s | Max: 17m 33s | Hits: 96%/330

🟩 python: Pass: 100%/1 | Total: 1h 30m | Avg: 1h 30m | Max: 1h 30m

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griwes commented Apr 9, 2025