bump PyTorch nightly to 20250131 (#8098)

Author: swolchok

.ci/docker/ci_commit_pins/pytorch.txt

@@ -1 +1 @@
-0a94bb432ed75cc2d950d81b2921363218a7e459
+27e35de6c288bffad1b4d18b393579c1d1a95547

.ci/docker/conda-env-ci.txt

@@ -1,4 +1,5 @@
 cmake=3.22.1
 ninja=1.10.2
 libuv
+llvm-openmp
 pkg-config

.ci/scripts/setup-macos.sh

@@ -121,6 +121,7 @@ setup_macos_env_variables
 # NB: we need buck2 in all cases because cmake build also depends on calling
 # buck2 atm
 install_buck
+brew install libomp
 install_pip_dependencies
 
 # TODO(huydhn): Unlike our self-hosted runner, GitHub runner doesn't have access

backends/arm/test/models/test_conformer.py

@@ -34,7 +34,7 @@ class TestConformer(unittest.TestCase):
         "executorch_exir_dialects_edge__ops_aten_where_self": 4,
         "executorch_exir_dialects_edge__ops_aten_logical_not_default": 4,
         "executorch_exir_dialects_edge__ops_aten_any_dim": 2,
-        "torch.ops.aten._assert_scalar.default": 12,
+        "torch.ops.aten._assert_scalar.default": 10,
         "torch.ops.aten._local_scalar_dense.default": 1,
         "torch.ops.aten.scalar_tensor.default": 2,
         "torch.ops.higher_order.executorch_call_delegate": 5,

backends/arm/test/runner_utils.py

@@ -169,7 +169,7 @@ def _tosa_dispatch(self, lowered_backend_module: LoweredBackendModule, inputs):
         return run_tosa_graph(tosa_buffer, tosa_version, inputs)
 
     def __torch_function__(self, func, types, args=..., kwargs=None):
-        if isinstance(func, torch._higher_order_ops.executorch_call_delegate.ExecutorchCallDelegate):  # type: ignore
+        if func is torch._higher_order_ops.executorch_call_delegate:
             lowered_backend_module = cast(LoweredBackendModule, args[0])
             if lowered_backend_module.backend_id == "ArmBackend":
                 return self._tosa_dispatch(lowered_backend_module, args[1:])

install_requirements.py

@@ -67,7 +67,7 @@ def python_is_compatible():
 # NOTE: If a newly-fetched version of the executorch repo changes the value of
 # NIGHTLY_VERSION, you should re-run this script to install the necessary
 # package versions.
-NIGHTLY_VERSION = "dev20250104"
+NIGHTLY_VERSION = "dev20250131"
 
 
 def install_requirements(use_pytorch_nightly):
@@ -76,7 +76,7 @@ def install_requirements(use_pytorch_nightly):
         # Setting use_pytorch_nightly to false to test the pinned PyTorch commit. Note
         # that we don't need to set any version number there because they have already
         # been installed on CI before this step, so pip won't reinstall them
-        f"torch==2.6.0.{NIGHTLY_VERSION}" if use_pytorch_nightly else "torch",
+        f"torch==2.7.0.{NIGHTLY_VERSION}" if use_pytorch_nightly else "torch",
         (
             f"torchvision==0.22.0.{NIGHTLY_VERSION}"
             if use_pytorch_nightly