remove AcceleratorConnector.has_ipu

Author: DuYicong515

CHANGELOG.md

@@ -589,6 +589,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 - Removed `_aggregate_metrics`, `_reduce_agg_metrics`, and `_finalize_agg_metrics` from `LightningLoggerBase` ([#12053](https://github.com/PyTorchLightning/pytorch-lightning/pull/12053))
 
 
+- Removed `AcceleratorConnector.has_ipu` property ([#12111](https://github.com/PyTorchLightning/pytorch-lightning/pull/12111))
+
+
 ### Fixed
 
 - Fixed an issue where `HorovodStrategy.teardown()` did not complete gracefully if an exception was thrown during callback setup [#11752](https://github.com/PyTorchLightning/pytorch-lightning/pull/11752)

pytorch_lightning/trainer/connectors/accelerator_connector.py

@@ -859,10 +859,6 @@ def is_distributed(self) -> bool:
             is_distributed |= self.strategy.is_distributed
         return is_distributed
 
-    @property
-    def has_ipu(self) -> bool:
-        return isinstance(self.accelerator, IPUAccelerator) and isinstance(self.strategy, IPUStrategy)
-
     @property
     def use_ipu(self) -> bool:
         return isinstance(self.accelerator, IPUAccelerator)

tests/accelerators/test_accelerator_connector.py

@@ -905,11 +905,9 @@ def test_unsupported_tpu_choice(monkeypatch):
 def test_unsupported_ipu_choice(monkeypatch):
     import pytorch_lightning.strategies.ipu as ipu
     import pytorch_lightning.utilities.imports as imports
-    from pytorch_lightning.trainer.connectors.accelerator_connector import AcceleratorConnector
 
     monkeypatch.setattr(imports, "_IPU_AVAILABLE", True)
     monkeypatch.setattr(ipu, "_IPU_AVAILABLE", True)
-    monkeypatch.setattr(AcceleratorConnector, "has_ipu", True)
     with pytest.raises(MisconfigurationException, match=r"accelerator='ipu', precision='bf16'\)` is not supported"):
         Trainer(accelerator="ipu", precision="bf16")
     with pytest.raises(MisconfigurationException, match=r"accelerator='ipu', precision=64\)` is not supported"):