fix 8bit test

Signed-off-by: jiqing-feng <[email protected]>

Author: jiqing-feng

tests/quantization/bnb/test_mixed_int8.py

@@ -97,6 +97,10 @@ class Base8bitTests(unittest.TestCase):
     num_inference_steps = 10
     seed = 0
 
+    @classmethod
+    def setUpClass(cls):
+        torch.use_deterministic_algorithms(True)
+
     def get_dummy_inputs(self):
         prompt_embeds = load_pt(
             "https://huggingface.co/datasets/hf-internal-testing/bnb-diffusers-testing-artifacts/resolve/main/prompt_embeds.pt",
@@ -485,7 +489,6 @@ def test_generate_quality_dequantize(self):
         r"""
         Test that loading the model and unquantize it produce correct results.
         """
-        torch.use_deterministic_algorithms(True)
         self.pipeline_8bit.transformer.dequantize()
         output = self.pipeline_8bit(
             prompt=self.prompt,