Update test_ddp_sigterm_handling.py

Author: KAVYANSHTYAGI

tests/tests_pytorch/trainer/test_ddp_sigterm_handling.py

@@ -11,6 +11,11 @@
 from lightning.pytorch.strategies.ddp import DDPStrategy
 from lightning.pytorch.utilities.exceptions import SIGTERMException
 
+# Skip the test if DDP or multiple devices are not available
+pytestmark = pytest.mark.skipif(
+    not torch.distributed.is_available() or torch.cuda.device_count() < 2,
+    reason="Test requires torch.distributed and at least 2 CUDA devices"
+)
 
 class DummyModel(LightningModule):
     def training_step(self, batch, batch_idx):