Rework our `mdspan` implementation #3343

miscco · 2025-01-10T20:49:25Z

This completely rewrites our mdspan implementation.

It drop a lot of the old workarounds and follows the recent standard changes.

This is especially prominent for submdspan which has been reworked a ton during standardization

This did not yet implement the padded layouts which have been merged recently

I started using C++17 exclusively which hase been soo awesome

copy-pr-bot · 2025-01-10T20:49:29Z

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fbusato · 2025-01-10T21:00:17Z

it seems that the new implementation of submdspan works correctly when the data type of mdspan is const and returns the new mdspan with the right accessor. Anyway, please add a test to check the behavior of the accessor.

miscco · 2025-01-20T08:07:41Z

/ok to test

miscco · 2025-01-20T09:07:39Z

/ok to test

miscco · 2025-01-21T10:02:14Z

/ok to test

miscco · 2025-01-21T11:03:19Z

/ok to test

miscco · 2025-01-21T12:26:35Z

/ok to test

miscco · 2025-01-21T14:00:32Z

/ok to test

miscco · 2025-01-21T18:14:43Z

/ok to test

cudax/include/cuda/experimental/stf.cuh

cudax/include/cuda/experimental/__hierarchy/dimensions.cuh

cudax/include/cuda/experimental/__stf/internal/data_interface.cuh

miscco · 2025-01-22T08:23:33Z

/ok to test

miscco · 2025-01-22T08:25:03Z

/ok to test

…ible mapping

miscco · 2025-01-30T20:29:48Z

/ok to test

github-actions · 2025-01-30T22:14:38Z

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  🟩 nvcc               Pass: 100%/4   | Total: 15m 36s | Avg:  3m 54s | Max:  4m 43s
🟩 cxx
  🟩 Clang14            Pass: 100%/1   | Total:  3m 27s | Avg:  3m 27s | Max:  3m 27s
  🟩 Clang18            Pass: 100%/1   | Total:  4m 12s | Avg:  4m 12s | Max:  4m 12s
  🟩 GCC12              Pass: 100%/1   | Total:  4m 43s | Avg:  4m 43s | Max:  4m 43s
  🟩 GCC13              Pass: 100%/1   | Total:  3m 14s | Avg:  3m 14s | Max:  3m 14s
🟩 cxx_family
  🟩 Clang              Pass: 100%/2   | Total:  7m 39s | Avg:  3m 49s | Max:  4m 12s
  🟩 GCC                Pass: 100%/2   | Total:  7m 57s | Avg:  3m 58s | Max:  4m 43s
🟩 gpu
  🟩 rtx2080            Pass: 100%/4   | Total: 15m 36s | Avg:  3m 54s | Max:  4m 43s
🟩 jobs
  🟩 Infra              Pass: 100%/4   | Total: 15m 36s | Avg:  3m 54s | Max:  4m 43s

🟩 cccl_c_parallel: Pass: 100%/2 | Total: 6m 59s | Avg: 3m 29s | Max: 4m 44s

🟩 cpu
  🟩 amd64              Pass: 100%/2   | Total:  6m 59s | Avg:  3m 29s | Max:  4m 44s
🟩 ctk
  🟩 12.6               Pass: 100%/2   | Total:  6m 59s | Avg:  3m 29s | Max:  4m 44s
🟩 cudacxx
  🟩 nvcc12.6           Pass: 100%/2   | Total:  6m 59s | Avg:  3m 29s | Max:  4m 44s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/2   | Total:  6m 59s | Avg:  3m 29s | Max:  4m 44s
🟩 cxx
  🟩 GCC13              Pass: 100%/2   | Total:  6m 59s | Avg:  3m 29s | Max:  4m 44s
🟩 cxx_family
  🟩 GCC                Pass: 100%/2   | Total:  6m 59s | Avg:  3m 29s | Max:  4m 44s
🟩 gpu
  🟩 rtx2080            Pass: 100%/2   | Total:  6m 59s | Avg:  3m 29s | Max:  4m 44s
🟩 jobs
  🟩 Build              Pass: 100%/1   | Total:  2m 15s | Avg:  2m 15s | Max:  2m 15s
  🟩 Test               Pass: 100%/1   | Total:  4m 44s | Avg:  4m 44s | Max:  4m 44s

🟩 python: Pass: 100%/1 | Total: 33m 49s | Avg: 33m 49s | Max: 33m 49s

🟩 cpu
  🟩 amd64              Pass: 100%/1   | Total: 33m 49s | Avg: 33m 49s | Max: 33m 49s
🟩 ctk
  🟩 12.6               Pass: 100%/1   | Total: 33m 49s | Avg: 33m 49s | Max: 33m 49s
🟩 cudacxx
  🟩 nvcc12.6           Pass: 100%/1   | Total: 33m 49s | Avg: 33m 49s | Max: 33m 49s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/1   | Total: 33m 49s | Avg: 33m 49s | Max: 33m 49s
🟩 cxx
  🟩 GCC13              Pass: 100%/1   | Total: 33m 49s | Avg: 33m 49s | Max: 33m 49s
🟩 cxx_family
  🟩 GCC                Pass: 100%/1   | Total: 33m 49s | Avg: 33m 49s | Max: 33m 49s
🟩 gpu
  🟩 rtx2080            Pass: 100%/1   | Total: 33m 49s | Avg: 33m 49s | Max: 33m 49s
🟩 jobs
  🟩 Test               Pass: 100%/1   | Total: 33m 49s | Avg: 33m 49s | Max: 33m 49s

👃 Inspect Changes

Modifications in project?

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

Modifications in project or dependencies?

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

🏃‍ Runner counts (total jobs: 156)

#	Runner
110	`linux-amd64-cpu16`
14	`windows-amd64-cpu16`
12	`linux-amd64-gpu-rtx2080-latest-1`
10	`linux-arm64-cpu16`
6	`linux-amd64-gpu-rtxa6000-latest-1`
3	`linux-amd64-gpu-rtx4090-latest-1`
1	`linux-amd64-gpu-h100-latest-1`

bernhardmgruber linked an issue Jan 10, 2025 that may be closed by this pull request

Replace mdspan implementation with one derived from the newer LLVM implementation #3353

Open

miscco force-pushed the update_mdspan branch 4 times, most recently from 0ce2d94 to 4847384 Compare January 20, 2025 08:05

miscco force-pushed the update_mdspan branch from 4847384 to 92d91ba Compare January 20, 2025 09:07

miscco force-pushed the update_mdspan branch 3 times, most recently from df41ca8 to 29cba88 Compare January 21, 2025 10:00

miscco force-pushed the update_mdspan branch from 29cba88 to 59a3a4a Compare January 21, 2025 11:02

miscco force-pushed the update_mdspan branch 2 times, most recently from 3153baf to cb6065d Compare January 21, 2025 12:22

miscco force-pushed the update_mdspan branch from 968018b to e863ad0 Compare January 21, 2025 18:14

andralex reviewed Jan 21, 2025

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andralex reviewed Jan 21, 2025

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andralex reviewed Jan 21, 2025

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miscco force-pushed the update_mdspan branch from e863ad0 to 89dfd9c Compare January 22, 2025 08:21

miscco force-pushed the update_mdspan branch from 89dfd9c to 3518711 Compare January 22, 2025 08:24

miscco force-pushed the update_mdspan branch from 3518711 to 031e91d Compare January 22, 2025 15:31

miscco added 27 commits January 30, 2025 21:28

Improve ElementPool

c00daeb

Try and improve __check_size

d757bd9

Try and drop most of the fold macros now that we require C++17

3fdd930

Fix

00b5a0c

More fixes

62aa867

More fixes

83396e8

MSVC...

7e35706

Fix conversion warning

9633d4e

Suppress unused variable warnings

dec2b70

Try and fix confusion about the type of m

3e0d71e

Fix one more test

c7157a7

Cleanup extent converting constructor

2e94719

Try and make mdspan compile with nvhpc if it has no default construct…

a53ef7f

…ible mapping

Come on MSVC2019 you can do it

9069639

Avoid vexing parse for MSVC

45d65ec

Do not use _CCCL_NO_UNIQUE_ADDRESS with MSVC

5b89f3e

Use a handwritten no_unique_address implementation

55bd623

MSVC cannot deal with no unique address

da4fb3b

Make MSVC pass

2f282b1

Drop workaround given that we cannot do anything there

91b0794

Add missing header

ef8bb6c

Fix formatting issues

f46dbb0

Add missing constructors

e6569aa

Try and fix gcc issue

f2ab7ba

Try and be more resilient once more

dbf0eff

Avoid compiler issues with default constructor

9e6ecd3

Disable failing test for old nvcc and clang

e337f30

miscco force-pushed the update_mdspan branch from ac9e2fd to e337f30 Compare January 30, 2025 20:28

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Rework our `mdspan` implementation #3343

Rework our `mdspan` implementation #3343

miscco commented Jan 10, 2025

copy-pr-bot bot commented Jan 10, 2025

fbusato commented Jan 10, 2025

miscco commented Jan 20, 2025

miscco commented Jan 20, 2025

miscco commented Jan 21, 2025

miscco commented Jan 21, 2025

miscco commented Jan 21, 2025

miscco commented Jan 21, 2025

miscco commented Jan 21, 2025

miscco commented Jan 22, 2025

miscco commented Jan 22, 2025

miscco commented Jan 30, 2025

github-actions bot commented Jan 30, 2025

🟨 libcudacxx: Pass: 86%/43 | Total: 11h 49m | Avg: 16m 30s | Max: 47m 57s | Hits: 384%/5254

🟩 cub: Pass: 100%/44 | Total: 1d 16h | Avg: 54m 51s | Max: 1h 19m | Hits: 35%/3512

🟩 thrust: Pass: 100%/42 | Total: 1d 02h | Avg: 38m 32s | Max: 1h 24m | Hits: 60%/7384

🟩 cudax: Pass: 100%/20 | Total: 4h 30m | Avg: 13m 30s | Max: 17m 32s | Hits: 90%/522

🟩 cccl: Pass: 100%/4 | Total: 15m 36s | Avg: 3m 54s | Max: 4m 43s

🟩 cccl_c_parallel: Pass: 100%/2 | Total: 6m 59s | Avg: 3m 29s | Max: 4m 44s

🟩 python: Pass: 100%/1 | Total: 33m 49s | Avg: 33m 49s | Max: 33m 49s

👃 Inspect Changes

Modifications in project?

Modifications in project or dependencies?

🏃‍ Runner counts (total jobs: 156)

Rework our mdspan implementation #3343

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Rework our mdspan implementation #3343

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miscco commented Jan 10, 2025

copy-pr-bot bot commented Jan 10, 2025

fbusato commented Jan 10, 2025

miscco commented Jan 20, 2025

miscco commented Jan 20, 2025

miscco commented Jan 21, 2025

miscco commented Jan 21, 2025

miscco commented Jan 21, 2025

miscco commented Jan 21, 2025

miscco commented Jan 21, 2025

miscco commented Jan 22, 2025

miscco commented Jan 22, 2025

miscco commented Jan 30, 2025

github-actions bot commented Jan 30, 2025

🟨 libcudacxx: Pass: 86%/43 | Total: 11h 49m | Avg: 16m 30s | Max: 47m 57s | Hits: 384%/5254

🟩 cub: Pass: 100%/44 | Total: 1d 16h | Avg: 54m 51s | Max: 1h 19m | Hits: 35%/3512

🟩 thrust: Pass: 100%/42 | Total: 1d 02h | Avg: 38m 32s | Max: 1h 24m | Hits: 60%/7384

🟩 cudax: Pass: 100%/20 | Total: 4h 30m | Avg: 13m 30s | Max: 17m 32s | Hits: 90%/522

🟩 cccl: Pass: 100%/4 | Total: 15m 36s | Avg: 3m 54s | Max: 4m 43s

🟩 cccl_c_parallel: Pass: 100%/2 | Total: 6m 59s | Avg: 3m 29s | Max: 4m 44s

🟩 python: Pass: 100%/1 | Total: 33m 49s | Avg: 33m 49s | Max: 33m 49s

👃 Inspect Changes

Modifications in project?

Modifications in project or dependencies?

🏃‍ Runner counts (total jobs: 156)

Rework our `mdspan` implementation #3343

Rework our `mdspan` implementation #3343