Enable including atomics and friends in TUs that do not support them. #1736
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🟩 CI Results [ Failed: 0 | Passed: 302 | Total: 302 ]
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| # | Runner |
|---|---|
| 232 | linux-amd64-cpu16 |
| 28 | linux-amd64-gpu-v100-latest-1 |
| 24 | linux-arm64-cpu16 |
| 18 | windows-amd64-cpu16 |
👃 Inspect Changes
Modifications in project?
| Project | |
|---|---|
| CCCL Infrastructure | |
| +/- | libcu++ |
| CUB | |
| Thrust | |
| CUDA Experimental |
Modifications in project or dependencies?
| Project | |
|---|---|
| CCCL Infrastructure | |
| +/- | libcu++ |
| +/- | CUB |
| +/- | Thrust |
| +/- | CUDA Experimental |
miscco
requested changes
May 14, 2024
| (return __atomic_load_n_cuda(__a->get(), static_cast<__memory_order_underlying_t>(__order), _Sco{});), | ||
| NV_IS_DEVICE, | ||
| (__atomic_is_not_supported_pre_sm_60();), |
There was a problem hiding this comment.
We might need to make this a template that returns __atomic_underlying_t<_Sto> because otherwise we might have no return in that function
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Or:
Suggested change
| (__atomic_is_not_supported_pre_sm_60();), | |
| (__atomic_is_not_supported_pre_sm_60(); return {};), |
I dont think so. With us moving towards linker errors we should be able to use NV_IF_TARGET to test this within the current framework |
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Agreed with @miscco's review. |
Sure, you'd just need to rewrite all of the current |
It depends a bit on the tests, but we have moved towards defining a single test function anyway, which makes this rather easy to do |
miscco
reviewed
May 29, 2024
| @@ -64,11 +64,17 @@ struct __atomic_storage | |||
| } | |||
| }; | |||
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| #if defined(_CCCL_CUDA_COMPILER) | |||
| extern "C" _CCCL_DEVICE void __atomic_is_not_supported_pre_sm_60(); | |||
| #endif | |||
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Suggested change
| #endif | |
| #endif // _CCCL_CUDA_COMPILER |
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Description
This removes most
#errorprotections from atomics headers. This allows them to be included in TUs where they previously would force a failure if the__CUDA_ARCH__list included an architecture that was not supported.Link time failures are emitted when compiling for architectures where the API is not supported.
For example:
results in:
closes: #1083
Checklist