Fix XGLM OOM on CI (#24123)

fix
Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>

tests/models/xglm/test_modeling_tf_xglm.py

@@ -15,6 +15,7 @@
 
 from __future__ import annotations
 
+import gc
 import unittest
 
 from transformers import XGLMConfig, XGLMTokenizer, is_tf_available
@@ -190,6 +191,11 @@ class TFXGLMModelTest(TFModelTesterMixin, PipelineTesterMixin, unittest.TestCase
 
 @require_tf
 class TFXGLMModelLanguageGenerationTest(unittest.TestCase):
+    def tearDown(self):
+        super().tearDown()
+        # clean-up as much as possible GPU memory occupied by PyTorch
+        gc.collect()
+
     @slow
     def test_lm_generate_xglm(self, verify_outputs=True):
         model = TFXGLMForCausalLM.from_pretrained("facebook/xglm-564M")

tests/models/xglm/test_modeling_xglm.py

@@ -14,6 +14,7 @@
 # limitations under the License.
 
 import datetime
+import gc
 import math
 import unittest
 
@@ -349,6 +350,12 @@ class XGLMModelTest(ModelTesterMixin, GenerationTesterMixin, PipelineTesterMixin
 
 @require_torch
 class XGLMModelLanguageGenerationTest(unittest.TestCase):
+    def tearDown(self):
+        super().tearDown()
+        # clean-up as much as possible GPU memory occupied by PyTorch
+        gc.collect()
+        torch.cuda.empty_cache()
+
     def _test_lm_generate_xglm_helper(
         self,
         gradient_checkpointing=False,