After this refactor:
* ```TorchVariable``` definition and all references are removed.
* All ```is_allowed``` references except one are removed.
- The only left one is in ```torch/_dynamo/decorators:_disallow_in_graph_helper```. It was called when users put ```disallow_in_graph``` decorator on a function. Since we use the lists in ```trace_rules``` to decide the function's trace rule, so the decorator would only be used as customer function rather than torch functions. I'll defer this to a separate decorator refactor PR.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/116312
Approved by: https://github.com/jansel
After this refactor:
* ```TorchVariable``` definition and all references are removed.
* All ```is_allowed``` references except one are removed.
- The only left one is in ```torch/_dynamo/decorators:_disallow_in_graph_helper```. It was called when users put ```disallow_in_graph``` decorator on a function. Since we use the lists in ```trace_rules``` to decide the function's trace rule, so the decorator would only be used as customer function rather than torch functions. I'll defer this to a separate decorator refactor PR.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/116312
Approved by: https://github.com/jansel
fixes https://github.com/pytorch/pytorch/issues/90552. This is a simpler fix that just detects the situation where AOTAutograd can't create a proper backward graph for the situation and graph breaks. This was technically a silent correctness issue before.
This PR tries to always graph break when we see a factory function that returns a tensor requiring grad. I check this by seeing if the op returned a `TensorVariable` in dynamo, and if one of the input arguments was a `requires_grad=True` kwarg. I think this is high-fidelity enough, and I'm also hoping that this is uncommon enough that a graph break is reasonable here.
The fix to avoid the graph break in user land is also pretty easy - just instantiate your tensor outside of the compiled region and plumb it in.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/113277
Approved by: https://github.com/eellison
ghstack dependencies: #113267, #113416, #113584
Fixes https://github.com/pytorch/pytorch/issues/113010
In eager mode, when you call an out= op like `add(..., out=out_arg)` with an out argument that is noncontiguous, the noncontiguous out arg will be returned directly. When we functionalize though, functionalization replaces it with a call to `add(...)` which ignores the contiguity of the original out arg.
Instead of trying to support this, this PR detects that situation and graph breaks
Pull Request resolved: https://github.com/pytorch/pytorch/pull/113267
Approved by: https://github.com/albanD
Currently custom VariableTrackers exist for classes that live outside of pytorch.
For these cases dynamo currently eagerly imports the module to get the class
object to compare against.
This instead uses `sys.modules.get("module.path")` such that the module is never
imported by dynamo itself, but if the user has imported the module then we will
still access the module and grab the type we need to compare against.
I noticed this issue because importing `KeyedJaggedTensor` fails half-way
through if `fbgemm_gpu` has been built with an incompatible PyTorch version, in
which case it retries the import again each time!
Pull Request resolved: https://github.com/pytorch/pytorch/pull/112319
Approved by: https://github.com/lezcano, https://github.com/ezyang
Previously, under config.only_allow_pt2_compliant_ops, Dynamo graph
breaks when it see an OpOverloadPacket where any overloads are not
PT2 compliant. This is potentially brittle: if someone (unlikely) adds
a new overload for a custom operator, then this would cause a
previously non-graph-breaking call to the OpOverloadPacket to graph break.
In this PR:
- When Dynamo is about to write a call to an operator to the FX graph,
we check if it is PT2 compliant.
- For OpOverload, we check to see if the tag is on it
- For OpOverloadPacket, we do overload resolution and check to see if
the tag is on the OpOverload that it resolves to.
Test Plan:
- new tests, existing tests
Pull Request resolved: https://github.com/pytorch/pytorch/pull/112200
Approved by: https://github.com/bdhirsh
Major change in this PR is to make torch context manager class a separate ```TorchCtxManagerClassVariable```, since we have dynamo implementation for these ctx managers.
I was thinking to wrap them as ```UserDefinedClassVariable``` and do dispatch at ```USCVariable.call_function```, but it seems almost the same amount of work and this way is more clear.
This is on the way of moving ```TorchVariable``` to ```TorchFunctionVariable``` which will only handle the functions who would be allowed in graph (e.g, ```torch.sin```) and constant folded (e.g, ```torch.is_floating_point```). All other torch functions would be go through skip/inline rules, and would be wrapped as ```UserFunctionVariable``` (for inlined) and ```SkipFilesVariable``` (for skipped).
The next steps:
* Wrap torch modules, classes, objects as regular ```PythonModuleVariable```, ```UserDefinedClassVariable``` and ```UserDefinedObjectVariable```.
* Generate the allow in graph torch functions list and wrap them as ```TorchFunctionVariable```.
* Finally merge ```skipfiles.check``` and ```is_allowed``` into one function ```allow_skip.check(fn)``` which would return a Enum of allow, skip and inline.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/111622
Approved by: https://github.com/jansel
This PR:
- Moves TrueDiv, LShift, RShift, IsNonOverlappingAndDenseIndicator to `_sympy.functions.py`
- Moves SymNode to `fx.experimental.sym_node`.
- This file does not have any SymPy dependencies at import time
- It installs the magic methods in Sym{Bool,Int,Float}.
- N.b. With this split, we may be able to move Sym{Bool,Int,Float} to this file, and remove quite a few of the hacks around these classes
- Imports `sym_node` in `torch/__init__.py` rather than the whole `symbolic_shapes.py`.
This breaks the import-time dependency between torch and SymPy
Pull Request resolved: https://github.com/pytorch/pytorch/pull/112037
Approved by: https://github.com/peterbell10
ghstack dependencies: #112035, #112036
This PR:
- adds the pt2 compliant tag. This tag specifies that the operator works
with the PT2 compilation APIs. A custom op author should test their
ops with opcheck if they choose to add this tag.
- adds a config for Dynamo to allow only pt2 compliant ops into the
graph and graph break on all other OpOverload/OpOverloadPacket.
Bikeshedding help wanted on the name of the tag. It should be easily
grep-able so we can set up rules for it.
Test Plan:
- new tests
Reviewers:
Subscribers:
Tasks:
Tags:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/111933
Approved by: https://github.com/ezyang
ghstack dependencies: #111912, #111915, #111948
