Fix Quark quantization config (#37578)

fix

src/transformers/utils/quantization_config.py

@@ -1821,7 +1821,10 @@ class QuarkConfig(QuantizationConfigMixin):
             from quark.torch.export.config.config import JsonExporterConfig
             from quark.torch.export.main_export.quant_config_parser import QuantConfigParser
             from quark.torch.quantization.config.config import Config
-
+        else:
+            raise ImportError(
+                "Quark is not installed. Please refer to https://quark.docs.amd.com/latest/install.html."
+            )
         # This might be e.g. `"fp8"` or `"awq"`.
         self.custom_mode = kwargs["quant_method"]
         self.legacy = "export" not in kwargs

tests/quantization/quark_integration/test_quark.py

@@ -33,6 +33,7 @@ if is_quark_available():
     from quark.torch.export.nn.modules.qparamslinear import QParamsLinear
 
 
+@require_quark
 class QuarkConfigTest(unittest.TestCase):
     def test_commmon_args(self):
         config = AutoConfig.from_pretrained("amd/Llama-3.1-8B-Instruct-w-int8-a-int8-sym-test")