Update outdated custom ops tutorials to point to the new landing page (#2953)

* Update outdated custom ops tutorials to point to the new landing page
* Also turns on verification for the python custom ops tutorials.
* Update intermediate_source/torch_export_tutorial.py

---------

Co-authored-by: Svetlana Karslioglu <[email protected]>

Author: zou3519

.jenkins/validate_tutorials_built.py

@@ -29,7 +29,6 @@
     "intermediate_source/fx_conv_bn_fuser",
     "intermediate_source/_torch_export_nightly_tutorial",  # does not work on release
     "advanced_source/super_resolution_with_onnxruntime",
-    "advanced_source/python_custom_ops",  # https://github.com/pytorch/pytorch/issues/127443
     "advanced_source/usb_semisup_learn", # fails with CUDA OOM error, should try on a different worker
     "prototype_source/fx_graph_mode_ptq_dynamic",
     "prototype_source/vmap_recipe",

advanced_source/cpp_custom_ops.rst

@@ -417,4 +417,4 @@ Conclusion
 In this tutorial, we went over the recommended approach to integrating Custom C++
 and CUDA operators with PyTorch. The ``TORCH_LIBRARY/torch.library`` APIs are fairly
 low-level. For more information about how to use the API, see
-`The Custom Operators Manual <https://pytorch.org/docs/main/notes/custom_operators.html>`_.
+`The Custom Operators Manual <https://pytorch.org/tutorials/advanced/custom_ops_landing_page.html#the-custom-operators-manual>`_.

advanced_source/cpp_extension.rst

@@ -2,6 +2,10 @@ Custom C++ and CUDA Extensions
 ==============================
 **Author**: `Peter Goldsborough <https://www.goldsborough.me/>`_
 
+.. warning::
+
+    This tutorial is deprecated as of PyTorch 2.4. Please see :ref:`custom-ops-landing-page`
+    for the newest up-to-date guides on extending PyTorch with Custom C++/CUDA Extensions.
 
 PyTorch provides a plethora of operations related to neural networks, arbitrary
 tensor algebra, data wrangling and other purposes. However, you may still find
@@ -225,7 +229,7 @@ Instead of:
 Currently open issue for nvcc bug `here
 <https://github.com/pytorch/pytorch/issues/69460>`_.
 Complete workaround code example `here
-<https://github.com/facebookresearch/pytorch3d/commit/cb170ac024a949f1f9614ffe6af1c38d972f7d48>`_. 
+<https://github.com/facebookresearch/pytorch3d/commit/cb170ac024a949f1f9614ffe6af1c38d972f7d48>`_.
 
 Forward Pass
 ************

advanced_source/custom_ops_landing_page.rst

@@ -1,7 +1,7 @@
 .. _custom-ops-landing-page:
 
-PyTorch Custom Operators Landing Page
-=====================================
+PyTorch Custom Operators
+===========================
 
 PyTorch offers a large library of operators that work on Tensors (e.g. ``torch.add``,
 ``torch.sum``, etc). However, you may wish to bring a new custom operation to PyTorch
@@ -10,26 +10,27 @@ In order to do so, you must register the custom operation with PyTorch via the P
 `torch.library docs <https://pytorch.org/docs/stable/library.html>`_ or C++ ``TORCH_LIBRARY``
 APIs.
 
-TL;DR
------
+
 
 Authoring a custom operator from Python
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Please see :ref:`python-custom-ops-tutorial`.
 
 You may wish to author a custom operator from Python (as opposed to C++) if:
+
 - you have a Python function you want PyTorch to treat as an opaque callable, especially with
-respect to ``torch.compile`` and ``torch.export``.
+  respect to ``torch.compile`` and ``torch.export``.
 - you have some Python bindings to C++/CUDA kernels and want those to compose with PyTorch
-subsystems (like ``torch.compile`` or ``torch.autograd``)
+  subsystems (like ``torch.compile`` or ``torch.autograd``)
 
 Integrating custom C++ and/or CUDA code with PyTorch
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Please see :ref:`cpp-custom-ops-tutorial`.
 
 You may wish to author a custom operator from C++ (as opposed to Python) if:
+
 - you have custom C++ and/or CUDA code.
 - you plan to use this code with ``AOTInductor`` to do Python-less inference.
 

advanced_source/dispatcher.rst

@@ -1,6 +1,11 @@
 Registering a Dispatched Operator in C++
 ========================================
 
+.. warning::
+
+    This tutorial is deprecated as of PyTorch 2.4. Please see :ref:`custom-ops-landing-page`
+    for the newest up-to-date guides on extending PyTorch with Custom Operators.
+
 The dispatcher is an internal component of PyTorch which is responsible for
 figuring out what code should actually get run when you call a function like
 ``torch::add``.  This can be nontrivial, because PyTorch operations need

advanced_source/python_custom_ops.py

@@ -260,5 +260,5 @@ def f(x):
 # For more detailed information, see:
 #
 # - `the torch.library documentation <https://pytorch.org/docs/stable/library.html>`_
-# - `the Custom Operators Manual <https://pytorch.org/docs/main/notes/custom_operators.html>`_
+# - `the Custom Operators Manual <https://pytorch.org/tutorials/advanced/custom_ops_landing_page.html#the-custom-operators-manual>`_
 #

advanced_source/torch_script_custom_ops.rst

@@ -1,6 +1,11 @@
 Extending TorchScript with Custom C++ Operators
 ===============================================
 
+.. warning::
+
+    This tutorial is deprecated as of PyTorch 2.4. Please see :ref:`custom-ops-landing-page`
+    for the newest up-to-date guides on PyTorch Custom Operators.
+
 The PyTorch 1.0 release introduced a new programming model to PyTorch called
 `TorchScript <https://pytorch.org/docs/master/jit.html>`_. TorchScript is a
 subset of the Python programming language which can be parsed, compiled and

intermediate_source/torch_export_tutorial.py

@@ -544,25 +544,19 @@ def suggested_fixes():
 #
 # Currently, the steps to register a custom op for use by ``torch.export`` are:
 #
-# - Define the custom op using ``torch.library`` (`reference <https://pytorch.org/docs/main/library.html>`__)
+# - Define the custom op using ``torch.library`` (`reference <https://pytorch.org/tutorials/advanced/custom_ops_landing_page.html>`__)
 #   as with any other custom op
 
-from torch.library import Library, impl, impl_abstract
-
-m = Library("my_custom_library", "DEF")
-
-m.define("custom_op(Tensor input) -> Tensor")
-
-@impl(m, "custom_op", "CompositeExplicitAutograd")
-def custom_op(x):
+@torch.library.custom_op("my_custom_library::custom_op", mutates_args={})
+def custom_op(input: torch.Tensor) -> torch.Tensor:
     print("custom_op called!")
     return torch.relu(x)
 
 ######################################################################
 # - Define a ``"Meta"`` implementation of the custom op that returns an empty
 #   tensor with the same shape as the expected output
 
-@impl_abstract("my_custom_library::custom_op")
+@custom_op.register_fake 
 def custom_op_meta(x):
     return torch.empty_like(x)