fix pq case bug

tests/milvus_python_test/test_index.py

@@ -587,6 +587,8 @@ class TestIndexIP:
         '''
         index_params = get_simple_index_params
         logging.getLogger().info(index_params)
+        if index_params["index_type"] == IndexType.IVF_PQ:
+            pytest.skip("Skip some PQ cases")
         status, ids = connect.add_vectors(ip_table, vectors)
         status = connect.create_index(ip_table, index_params)
         assert status.OK()
@@ -812,11 +814,13 @@ class TestIndexIP:
         status, result = connect.describe_index(ip_table)
         logging.getLogger().info(result)
         assert result._table_name == ip_table
-        if index_params["index_type"] == IndexType.IVF_PQ:
+        status, mode = connect._cmd("mode")
+        if str(mode) == "GPU" and index_params["index_type"] == IndexType.IVF_PQ:
             assert result._index_type == IndexType.FLAT
             assert result._nlist == 16384
         else:
             assert result._index_type == index_params["index_type"]
+            assert result._nlist == index_params["nlist"]
 
     def test_describe_index_partition(self, connect, ip_table, get_simple_index_params):
         '''