Port X86_F16 from executorch half to PyTorch half #140720

swolchok · 2024-11-14T16:32:18Z

Stack from ghstack (oldest at bottom):

This was added in pytorch/executorch#1789 . I'm working on sharing Half.h with ExecuTorch, and this is a missing feature.

Differential Revision: D65949409

This was added in pytorch/executorch#1789 . I'm working on sharing Half.h with ExecuTorch, and this is a missing feature. Differential Revision: [D65949409](https://our.internmc.facebook.com/intern/diff/D65949409/) [ghstack-poisoned]

pytorch-bot · 2024-11-14T16:32:23Z

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facebook-github-bot · 2024-11-14T16:32:37Z

This pull request was exported from Phabricator. Differential Revision: D65949409

This was added in pytorch/executorch#1789 . I'm working on sharing Half.h with ExecuTorch, and this is a missing feature. Differential Revision: [D65949409](https://our.internmc.facebook.com/intern/diff/D65949409/) ghstack-source-id: 253567897 Pull Request resolved: #140720

This was added in pytorch/executorch#1789 . I'm working on sharing Half.h with ExecuTorch, and this is a missing feature. Differential Revision: [D65949409](https://our.internmc.facebook.com/intern/diff/D65949409/) [ghstack-poisoned]

facebook-github-bot · 2024-11-14T18:34:19Z

This pull request was exported from Phabricator. Differential Revision: D65949409

Pull Request resolved: #140720 This was added in pytorch/executorch#1789 . I'm working on sharing Half.h with ExecuTorch, and this is a missing feature. ghstack-source-id: 253592160 @exported-using-ghexport Differential Revision: [D65949409](https://our.internmc.facebook.com/intern/diff/D65949409/)

This was added in pytorch/executorch#1789 . I'm working on sharing Half.h with ExecuTorch, and this is a missing feature. Differential Revision: [D65949409](https://our.internmc.facebook.com/intern/diff/D65949409/) [ghstack-poisoned]

Pull Request resolved: #140720 This was added in pytorch/executorch#1789 . I'm working on sharing Half.h with ExecuTorch, and this is a missing feature. ghstack-source-id: 253799376 @exported-using-ghexport Differential Revision: [D65949409](https://our.internmc.facebook.com/intern/diff/D65949409/)

facebook-github-bot · 2024-11-15T18:18:10Z

This pull request was exported from Phabricator. Differential Revision: D65949409

This was added in pytorch/executorch#1789 . I'm working on sharing Half.h with ExecuTorch, and this is a missing feature. Differential Revision: [D65949409](https://our.internmc.facebook.com/intern/diff/D65949409/) [ghstack-poisoned]

facebook-github-bot · 2024-11-15T19:13:59Z

This pull request was exported from Phabricator. Differential Revision: D65949409

Pull Request resolved: #140720 This was added in pytorch/executorch#1789 . I'm working on sharing Half.h with ExecuTorch, and this is a missing feature. ghstack-source-id: 253813016 @exported-using-ghexport Differential Revision: [D65949409](https://our.internmc.facebook.com/intern/diff/D65949409/)

swolchok · 2024-11-18T18:56:55Z

I think this one is not ready for land yet; surprised checks pass because I think I'm seeing a failure internally. need to investigate

malfet · 2024-11-18T19:02:02Z

c10/util/Half.h

+#if defined(__x86_64__) || defined(_M_X64) || defined(__i386) || \
+    defined(_M_IX86)
+#if defined(__F16C__)
+#define X86_F16 1


Should it be something like _HAS_X86_64_F16 (to avoid even a slight possibility of name collision)

malfet · 2024-11-18T19:02:10Z

@pytorchbot merge

pytorchmergebot · 2024-11-18T19:03:56Z

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facebook-github-bot · 2024-11-19T00:27:43Z

This pull request was exported from Phabricator. Differential Revision: D65949409

facebook-github-bot · 2024-11-19T15:47:20Z

This pull request was exported from Phabricator. Differential Revision: D65949409

It passed PyTorch CI, but internally we saw failures from this. Differential Revision: [D66137897](https://our.internmc.facebook.com/intern/diff/D66137897/) Pull Request resolved: #140994 Approved by: https://github.com/malfet ghstack dependencies: #140564, #140565, #140566, #140567, #140720

Make what we're doing as obvious as possible to the compiler. Differential Revision: [D66108811](https://our.internmc.facebook.com/intern/diff/D66108811/) Pull Request resolved: #141035 Approved by: https://github.com/Skylion007, https://github.com/ezyang, https://github.com/malfet ghstack dependencies: #140564, #140565, #140566, #140567, #140720, #140994

This was added in pytorch/executorch#1789 . I'm working on sharing Half.h with ExecuTorch, and this is a missing feature. Differential Revision: [D65949409](https://our.internmc.facebook.com/intern/diff/D65949409/) Pull Request resolved: pytorch#140720 Approved by: https://github.com/malfet ghstack dependencies: pytorch#140564, pytorch#140565, pytorch#140566, pytorch#140567

It passed PyTorch CI, but internally we saw failures from this. Differential Revision: [D66137897](https://our.internmc.facebook.com/intern/diff/D66137897/) Pull Request resolved: pytorch#140994 Approved by: https://github.com/malfet ghstack dependencies: pytorch#140564, pytorch#140565, pytorch#140566, pytorch#140567, pytorch#140720

Make what we're doing as obvious as possible to the compiler. Differential Revision: [D66108811](https://our.internmc.facebook.com/intern/diff/D66108811/) Pull Request resolved: pytorch#141035 Approved by: https://github.com/Skylion007, https://github.com/ezyang, https://github.com/malfet ghstack dependencies: pytorch#140564, pytorch#140565, pytorch#140566, pytorch#140567, pytorch#140720, pytorch#140994

This was added in pytorch/executorch#1789 . I'm working on sharing Half.h with ExecuTorch, and this is a missing feature. Differential Revision: [D65949409](https://our.internmc.facebook.com/intern/diff/D65949409/) Pull Request resolved: pytorch#140720 Approved by: https://github.com/malfet ghstack dependencies: pytorch#140564, pytorch#140565, pytorch#140566, pytorch#140567

It passed PyTorch CI, but internally we saw failures from this. Differential Revision: [D66137897](https://our.internmc.facebook.com/intern/diff/D66137897/) Pull Request resolved: pytorch#140994 Approved by: https://github.com/malfet ghstack dependencies: pytorch#140564, pytorch#140565, pytorch#140566, pytorch#140567, pytorch#140720

Make what we're doing as obvious as possible to the compiler. Differential Revision: [D66108811](https://our.internmc.facebook.com/intern/diff/D66108811/) Pull Request resolved: pytorch#141035 Approved by: https://github.com/Skylion007, https://github.com/ezyang, https://github.com/malfet ghstack dependencies: pytorch#140564, pytorch#140565, pytorch#140566, pytorch#140567, pytorch#140720, pytorch#140994

This was added in pytorch/executorch#1789 . I'm working on sharing Half.h with ExecuTorch, and this is a missing feature. Differential Revision: [D65949409](https://our.internmc.facebook.com/intern/diff/D65949409/) Pull Request resolved: pytorch#140720 Approved by: https://github.com/malfet ghstack dependencies: pytorch#140564, pytorch#140565, pytorch#140566, pytorch#140567

It passed PyTorch CI, but internally we saw failures from this. Differential Revision: [D66137897](https://our.internmc.facebook.com/intern/diff/D66137897/) Pull Request resolved: pytorch#140994 Approved by: https://github.com/malfet ghstack dependencies: pytorch#140564, pytorch#140565, pytorch#140566, pytorch#140567, pytorch#140720

Make what we're doing as obvious as possible to the compiler. Differential Revision: [D66108811](https://our.internmc.facebook.com/intern/diff/D66108811/) Pull Request resolved: pytorch#141035 Approved by: https://github.com/Skylion007, https://github.com/ezyang, https://github.com/malfet ghstack dependencies: pytorch#140564, pytorch#140565, pytorch#140566, pytorch#140567, pytorch#140720, pytorch#140994

This was added in pytorch/executorch#1789 . I'm working on sharing Half.h with ExecuTorch, and this is a missing feature. Differential Revision: [D65949409](https://our.internmc.facebook.com/intern/diff/D65949409/) Pull Request resolved: pytorch#140720 Approved by: https://github.com/malfet ghstack dependencies: pytorch#140564, pytorch#140565, pytorch#140566, pytorch#140567

Port X86_F16 from executorch half to PyTorch half

3e3637e

This was added in pytorch/executorch#1789 . I'm working on sharing Half.h with ExecuTorch, and this is a missing feature. Differential Revision: [D65949409](https://our.internmc.facebook.com/intern/diff/D65949409/) [ghstack-poisoned]

This was referenced Nov 14, 2024

move c10::overflows to its own header #140564

Closed

Move complex<Half> from Half.h to complex.h #140565

Closed

Add C10_EMBEDDED to gate ostream usage in Half/BFloat16 #140566

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swolchok mentioned this pull request Nov 14, 2024

Remove UB type punning from c10/util/floating_point_utils.h #140567

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facebook-github-bot added the fb-exported label Nov 14, 2024

swolchok added release notes: performance_as_product release notes: cpp release notes category and removed release notes: cpp release notes category labels Nov 15, 2024

swolchok requested a review from malfet November 15, 2024 22:01

malfet approved these changes Nov 18, 2024

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swolchok mentioned this pull request Nov 19, 2024

Fix Half X86_F16 CUDA build failure #140994

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swolchok mentioned this pull request Nov 19, 2024

Use std::bit_cast as c10::bit_cast if available #141035

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