ci: Enable autodiff tests on x86_64 linux by sgasho · Pull Request #157776 · rust-lang/rust

sgasho · 2026-06-11T15:22:10Z

Summary

Enable autodiff tests on x86_64 linux

For now, this is an optional-* Merge CI only job, and is not enabled in PR CI.

sgasho · 2026-06-12T14:54:03Z

I executed git pull --rebase origin main to see if build steps in autodiff job finish successfully after enzyme submodule update

No problem found

rustbot · 2026-07-06T15:07:12Z

Warning

If you are changing how CI LLVM is built or linked, make sure to bump
src/bootstrap/download-ci-llvm-stamp.

cc @jieyouxu

ZuseZ4 · 2026-07-06T17:16:01Z

@bors try jobs=x86_64-gnu-autodiff

Rerunning to test potential cache effects.
Once this is done, we should ping Jakub and jieyouxu to discuss where to put it (and probably create an infra thread to discuss). I also don't think they'll accept autodiff as a culprit of measurably longer PR CI, so we'll probably need to move it, if the cache isn't helping enough.

ci: Enable autodiff tests on x86_64 linux try-job: x86_64-gnu-autodiff

rust-bors · 2026-07-06T19:02:45Z

☀️ Try build successful (CI)
Build commit: d1a9718 (d1a971826b83fead3b7550c5e4440c9102bb3290)
Base parent: 3c00c96 (3c00c96d3af4d5b5e101e56cc161a608b21366ee)

ZuseZ4 · 2026-07-06T20:23:11Z

Rebuilding a second time, since I'm not sure if artifacts are shared between PR Ci and try runs.
@bors try jobs=x86_64-gnu-autodiff

But so far, even just building LLVM+rustc+std+enzyme takes 95 minutes, 10 minutes more than miri, the next slowest job. Total time will always be a bit more than that, and autodiff will always have less users than something general like Miri, so that's hard to defend.

If the try results come back unchanged, can you move it to auto and mark it as allowed to fail? I don't think it needs to be blocking yet.

ci: Enable autodiff tests on x86_64 linux try-job: x86_64-gnu-autodiff

rust-bors · 2026-07-06T20:53:44Z

☀️ Try build successful (CI)
Build commit: 96310de (96310dea88820c3264b54ee2b5011698005372aa)
Base parent: 36714a9 (36714a9983d6ba11203d8bb87a1b372247fbcf06)

sgasho · 2026-07-19T05:44:34Z

@Kobzol @jieyouxu cc: @ZuseZ4
Do you think this is ready to land?
The job will remain optional for now. I'll monitor its results over the next few months and investigate any failures.

It would be nice to document it in rustc-dev-guid and add the doc-url to the job though.

I'll address this in a follow-up PR by adding an autodiff CI page to the rustc-dev-guide and setting it as the job's doc_url.

jieyouxu · 2026-07-19T06:11:13Z

(BTW you can make the rdg changes in the same PR here modifying the rdg subtree, the rdg url can be predicted (like the autodiff job))

rustbot · 2026-07-19T09:13:46Z

rustc-dev-guide is developed in its own repository. If possible, consider making this change to rust-lang/rustc-dev-guide instead.

cc @BoxyUwU, @tshepang

sgasho · 2026-07-19T09:18:28Z

(BTW you can make the rdg changes in the same PR here modifying the rdg subtree, the rdg url can be predicted (like the autodiff job))

Done!

Kobzol

Thanks! I think that it looks fine as an optional job, left some comments.

Aside: we should build some tooling to report failures from optional jobs.. :)

View changes since this review

Kobzol · 2026-07-20T10:00:15Z

+
+## Point of contact
+
+If you have questions or need help with a failure in this job, open a new topic


Is there a ping group for autodiff in team? It would be good to have that, and let reviewers ping such a team on the PR directly.

cc: @ZuseZ4

I don't think we currently have an autodiff notification group. I couldn't find one.

I took a look at the process described here:
https://forge.rust-lang.org/compiler/notification-groups.html#creating-a-notification-group

I'm not sure whether I should go through these steps myself or whether they need to be handled by a Rust team member. Either way, I assume creating the notification group doesn't need to block this PR

Indeed it doesn't.

Kobzol · 2026-07-21T13:50:17Z

@bors try jobs=optional-x86_64-gnu-autodiff

ci: Enable autodiff tests on x86_64 linux try-job: optional-x86_64-gnu-autodiff

Kobzol

LGTM, once CI passes.

View changes since this review

rust-bors · 2026-07-21T14:57:49Z

☀️ Try build successful (CI)
Build commit: 068c9b3 (068c9b3020df0289992b0f06c747b9cd62a308bd)
Base parent: f65b272 (f65b272fc92b1e7527dea4a224430a249ab25c2d)

sgasho · 2026-07-22T11:55:46Z

@ZuseZ4
CI succeeded. Can we land this? The job will remain optional for now.

ZuseZ4 · 2026-07-23T00:12:29Z

I was just waiting for LLVM 23 to land, which hopefully is tomorrow. But since it's optional and you tested building under LLVM 23, I guess it doesn't really matter.

@bors r+

rust-bors · 2026-07-23T00:12:32Z

📌 Commit 2bb8a3b has been approved by ZuseZ4

It is now in the queue for this repository.

@ZuseZ4

…ZuseZ4 ci: Enable autodiff tests on x86_64 linux ## Summary Enable autodiff tests on x86_64 linux For now, this is an `optional-*` Merge CI only job, and is not enabled in PR CI. r? @ZuseZ4

Rollup of 3 pull requests Successful merges: - #157776 (ci: Enable autodiff tests on x86_64 linux) - #159041 (Reorganize `tests/ui/issues` [22/N]) - #159612 (Reorganize `tests/ui/issues` [29/N])

@ZuseZ4

…ZuseZ4 ci: Enable autodiff tests on x86_64 linux ## Summary Enable autodiff tests on x86_64 linux For now, this is an `optional-*` Merge CI only job, and is not enabled in PR CI. r? @ZuseZ4

Rollup of 18 pull requests Successful merges: - #138618 (Support using const pointers in asm `const` operand) - #150161 (Remove 'static requirement on try_as_dyn) - #158362 (trait solver: account for universes from replace_bound_vars) - #159173 (Add allowed list check on EII implementations attributes) - #159466 (cmse: clear variant-dependent padding in `enum`s) - #159718 (Make `DocLinkResMap` an `FxIndexMap`) - #155795 (constify `vec![1, 2, 3]` macro) - #157776 (ci: Enable autodiff tests on x86_64 linux) - #157905 (Update comments and add tests for `-Zrandomize-layout` for some guaranteed ZSTs) - #159041 (Reorganize `tests/ui/issues` [22/N]) - #159108 (Reorganize `tests/ui/issues` [23/N]) - #159138 (doc: document wasm import symbol mangling) - #159531 (Reorganize `tests/ui/issues` [28/N]) - #159608 (early_otherwise: Don't hoist dereferences when the otherwise branch is reachable) - #159612 (Reorganize `tests/ui/issues` [29/N]) - #159653 (run `tests/assembly-llvm/asm/aarch64-types.rs` for `aarch64_be`) - #159759 (rustc-dev-guide subtree update) - #159761 (Remove outdated comment for resolve_vars_with_obligations)

@ZuseZ4

…ZuseZ4 ci: Enable autodiff tests on x86_64 linux ## Summary Enable autodiff tests on x86_64 linux For now, this is an `optional-*` Merge CI only job, and is not enabled in PR CI. r? @ZuseZ4

@ZuseZ4

…ZuseZ4 ci: Enable autodiff tests on x86_64 linux ## Summary Enable autodiff tests on x86_64 linux For now, this is an `optional-*` Merge CI only job, and is not enabled in PR CI. r? @ZuseZ4

Rollup of 19 pull requests Successful merges: - #150161 (Remove 'static requirement on try_as_dyn) - #158362 (trait solver: account for universes from replace_bound_vars) - #159173 (Add allowed list check on EII implementations attributes) - #159466 (cmse: clear variant-dependent padding in `enum`s) - #159718 (Make `DocLinkResMap` an `FxIndexMap`) - #155795 (constify `vec![1, 2, 3]` macro) - #157776 (ci: Enable autodiff tests on x86_64 linux) - #157905 (Update comments and add tests for `-Zrandomize-layout` for some guaranteed ZSTs) - #158766 (Promote riscv64-unknown-linux-musl to tier 2 with host tools) - #159041 (Reorganize `tests/ui/issues` [22/N]) - #159108 (Reorganize `tests/ui/issues` [23/N]) - #159138 (doc: document wasm import symbol mangling) - #159531 (Reorganize `tests/ui/issues` [28/N]) - #159608 (early_otherwise: Don't hoist dereferences when the otherwise branch is reachable) - #159612 (Reorganize `tests/ui/issues` [29/N]) - #159653 (run `tests/assembly-llvm/asm/aarch64-types.rs` for `aarch64_be`) - #159667 (Make some parser structured suggestions verbose and tweak their wording) - #159759 (rustc-dev-guide subtree update) - #159761 (Remove outdated comment for resolve_vars_with_obligations)

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sgasho force-pushed the linux_autodiff_tests_ci branch from a5999ca to 7da709a Compare June 12, 2026 12:41

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sgasho force-pushed the linux_autodiff_tests_ci branch from 851ebe4 to 33566ea Compare June 30, 2026 14:07

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sgasho force-pushed the linux_autodiff_tests_ci branch 2 times, most recently from 27ed09b to 57ed38d Compare July 6, 2026 00:42

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sgasho force-pushed the linux_autodiff_tests_ci branch from 57ed38d to 69603c6 Compare July 6, 2026 12:46

rustbot assigned ZuseZ4 Jul 6, 2026

sgasho marked this pull request as ready for review July 6, 2026 15:07

rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Jul 6, 2026

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rust-bors Bot pushed a commit that referenced this pull request Jul 6, 2026

Auto merge of #157776 - sgasho:linux_autodiff_tests_ci, r=<try>

d1a9718

ci: Enable autodiff tests on x86_64 linux try-job: x86_64-gnu-autodiff

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rust-bors Bot pushed a commit that referenced this pull request Jul 6, 2026

Auto merge of #157776 - sgasho:linux_autodiff_tests_ci, r=<try>

96310de

ci: Enable autodiff tests on x86_64 linux try-job: x86_64-gnu-autodiff

docs: add autodiff CI job document

4ee71fe

Kobzol reviewed Jul 20, 2026

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sgasho added 2 commits July 21, 2026 22:22

rdg: Move Autodiff CI job below performance testing

f68af89

Delete autodiff.sh and move the test command to the Dockerfile

2bb8a3b

rustbot added the A-rustc-dev-guide Area: rustc-dev-guide label Jul 21, 2026

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rust-bors Bot pushed a commit that referenced this pull request Jul 21, 2026

Auto merge of #157776 - sgasho:linux_autodiff_tests_ci, r=<try>

068c9b3

ci: Enable autodiff tests on x86_64 linux try-job: optional-x86_64-gnu-autodiff

Kobzol approved these changes Jul 21, 2026

View reviewed changes

rust-bors Bot added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jul 23, 2026

jhpratt mentioned this pull request Jul 23, 2026

Rollup of 3 pull requests #159752

Closed

jhpratt mentioned this pull request Jul 23, 2026

Rollup of 18 pull requests #159762

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jhpratt mentioned this pull request Jul 23, 2026

Rollup of 19 pull requests #159766

Closed

jhpratt mentioned this pull request Jul 23, 2026

Rollup of 19 pull requests #159769

Open


		## Point of contact

		If you have questions or need help with a failure in this job, open a new topic

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