More FX test tweaks

tests/test_models.py

@@ -348,6 +348,7 @@ if 'GITHUB_ACTIONS' in os.environ:
         'vgg*',
         'vit_large*',
         'xcit_large*',
+        'mixer_l*',
     ]
 
 
@@ -368,15 +369,16 @@ def test_model_forward_fx(model_name, batch_size):
     input_size = _get_input_size(model=model, target=TARGET_FWD_FX_SIZE)
     if max(input_size) > MAX_FWD_FX_SIZE:
         pytest.skip("Fixed input size model > limit.")
-    inputs = torch.randn((batch_size, *input_size))
-    outputs = model(inputs)
-    if isinstance(outputs, tuple):
-        outputs = torch.cat(outputs)
+    with torch.no_grad():
+        inputs = torch.randn((batch_size, *input_size))
+        outputs = model(inputs)
+        if isinstance(outputs, tuple):
+            outputs = torch.cat(outputs)
 
-    model = _create_fx_model(model)
-    fx_outputs = tuple(model(inputs).values())
-    if isinstance(fx_outputs, tuple):
-        fx_outputs = torch.cat(fx_outputs)
+        model = _create_fx_model(model)
+        fx_outputs = tuple(model(inputs).values())
+        if isinstance(fx_outputs, tuple):
+            fx_outputs = torch.cat(fx_outputs)
 
     assert torch.all(fx_outputs == outputs)
     assert outputs.shape[0] == batch_size
@@ -440,9 +442,10 @@ def test_model_forward_fx_torchscript(model_name, batch_size):
     model.eval()
 
     model = torch.jit.script(_create_fx_model(model))
-    outputs = tuple(model(torch.randn((batch_size, *input_size))).values())
-    if isinstance(outputs, tuple):
-        outputs = torch.cat(outputs)
+    with torch.no_grad():
+        outputs = tuple(model(torch.randn((batch_size, *input_size))).values())
+        if isinstance(outputs, tuple):
+            outputs = torch.cat(outputs)
 
     assert outputs.shape[0] == batch_size
     assert not torch.isnan(outputs).any(), 'Output included NaNs'