[PyTorch] Fix many Tuple::elements() callsites#64065
Closed
swolchok wants to merge 29 commits intogh/swolchok/278/basefrom
Closed
[PyTorch] Fix many Tuple::elements() callsites#64065swolchok wants to merge 29 commits intogh/swolchok/278/basefrom
swolchok wants to merge 29 commits intogh/swolchok/278/basefrom
Conversation
This diff fixes two problems with one solution. 1) I plan to experiment with changing Tuple's representation from std::vector<IValue> to either c10::SmallVector<IValue, 3> or a space-saving tagged union in order to speed up unpickling (as well as other workflows that use smallish tuples, probably). 2) It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. The solution is to make the `Tuple::elements() const &` return `c10::ArrayRef<IValue>` and remove `Tuple::elements() &`. Then the simple-but-slow code fails to compile. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! [ghstack-poisoned]
Contributor
🔗 Helpful links
💊 CI failures summary and remediationsAs of commit d2c4ce7 (more details on the Dr. CI page): ✅ None of the CI failures appear to be your fault 💚
❄️ 2 failures tentatively classified as flakybut reruns have not yet been triggered to confirm:
|
This was referenced Aug 26, 2021
This diff fixes two problems with one solution. 1) I plan to experiment with changing Tuple's representation from std::vector<IValue> to either c10::SmallVector<IValue, 3> or a space-saving tagged union in order to speed up unpickling (as well as other workflows that use smallish tuples, probably). 2) It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. The solution is to make the `Tuple::elements() const &` return `c10::ArrayRef<IValue>` and remove `Tuple::elements() &`. Then the simple-but-slow code fails to compile. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! [ghstack-poisoned]
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! [ghstack-poisoned]
This was referenced Aug 31, 2021
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! [ghstack-poisoned]
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! [ghstack-poisoned]
ezyang
approved these changes
Sep 15, 2021
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! [ghstack-poisoned]
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! [ghstack-poisoned]
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! [ghstack-poisoned]
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! [ghstack-poisoned]
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! [ghstack-poisoned]
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! [ghstack-poisoned]
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! [ghstack-poisoned]
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! [ghstack-poisoned]
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! [ghstack-poisoned]
CI Flow Status⚛️ CI FlowRuleset - Version:
You can add a comment to the PR and tag @pytorchbot with the following commands: # ciflow rerun, "ciflow/default" will always be added automatically
@pytorchbot ciflow rerun
# ciflow rerun with additional labels "-l <ciflow/label_name>", which is equivalent to adding these labels manually and trigger the rerun
@pytorchbot ciflow rerun -l ciflow/scheduled -l ciflow/slowFor more information, please take a look at the CI Flow Wiki. |
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! cc pietern mrshenli pritamdamania87 zhaojuanmao satgera rohan-varma gqchen aazzolini osalpekar jiayisuse @SciPioneer @H-Huang gcramer23 [ghstack-poisoned]
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! cc pietern mrshenli pritamdamania87 zhaojuanmao satgera rohan-varma gqchen aazzolini osalpekar jiayisuse @SciPioneer @H-Huang gcramer23 [ghstack-poisoned]
This was referenced Sep 23, 2021
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! cc pietern mrshenli pritamdamania87 zhaojuanmao satgera rohan-varma gqchen aazzolini osalpekar jiayisuse @SciPioneer @H-Huang gcramer23 [ghstack-poisoned]
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! cc pietern mrshenli pritamdamania87 zhaojuanmao satgera rohan-varma gqchen aazzolini osalpekar jiayisuse @SciPioneer @H-Huang gcramer23 [ghstack-poisoned]
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! cc pietern mrshenli pritamdamania87 zhaojuanmao satgera rohan-varma gqchen aazzolini osalpekar jiayisuse @SciPioneer @H-Huang gcramer23 [ghstack-poisoned]
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! cc pietern mrshenli pritamdamania87 zhaojuanmao satgera rohan-varma gqchen aazzolini osalpekar jiayisuse @SciPioneer @H-Huang gcramer23 [ghstack-poisoned]
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! cc pietern mrshenli pritamdamania87 zhaojuanmao satgera rohan-varma gqchen aazzolini osalpekar jiayisuse @SciPioneer @H-Huang gcramer23 [ghstack-poisoned]
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! cc pietern mrshenli pritamdamania87 zhaojuanmao satgera rohan-varma gqchen aazzolini osalpekar jiayisuse @SciPioneer @H-Huang gcramer23 [ghstack-poisoned]
It is only safe to mutate Tuple elements if you are the sole owner of the tuple. The most efficient way to do this, then, is `std::move(*std::move(tupleIValue).toTuple()).elements()` (the innermost move allows `IValue::toTuple()` to avoid a refcount bump and the outermost move allows the element vector to be moved out of the tuple), but many callsites write simply `tupleIValue.toTuple().elements()`, which incurs many extra refcount bumps. Differential Revision: [D30592621](https://our.internmc.facebook.com/intern/diff/D30592621/) **NOTE FOR REVIEWERS**: This PR has internal Facebook specific changes or comments, please review them on [Phabricator](https://our.internmc.facebook.com/intern/diff/D30592621/)! cc pietern mrshenli pritamdamania87 zhaojuanmao satgera rohan-varma gqchen aazzolini osalpekar jiayisuse @SciPioneer @H-Huang gcramer23 [ghstack-poisoned]
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Stack from ghstack:
It is only safe to mutate Tuple elements if you are the sole owner
of the tuple. The most efficient way to do this, then, is
std::move(*std::move(tupleIValue).toTuple()).elements()(theinnermost move allows
IValue::toTuple()to avoid a refcount bump andthe outermost move allows the element vector to be moved out of the
tuple), but many callsites write simply
tupleIValue.toTuple().elements(), which incurs many extra refcountbumps.
Differential Revision: D30592621
NOTE FOR REVIEWERS: This PR has internal Facebook specific changes or comments, please review them on Phabricator!
cc @pietern @mrshenli @pritamdamania87 @zhaojuanmao @satgera @rohan-varma @gqchen @aazzolini @osalpekar @jiayisuse @SciPioneer @H-Huang @gcramer23