diff --git a/tests/cpu/st/testcase/trelu/gen_data.py b/tests/cpu/st/testcase/trelu/gen_data.py
index ef55aa64..370de925 100644
--- a/tests/cpu/st/testcase/trelu/gen_data.py
+++ b/tests/cpu/st/testcase/trelu/gen_data.py
@@ -34,7 +34,8 @@ def gen_golden_data_trelu(case_name, param):
 
 
 class TReluParams:
-    def __init__(self, dtype, src_tile_row, src_tile_col, dst_tile_row, dst_tile_col, valid_row, valid_col):
+    def __init__(self, output_case_name, dtype, src_tile_row, src_tile_col, dst_tile_row, dst_tile_col, valid_row, valid_col):
+        self.output_case_name = output_case_name
         self.dtype = dtype
         self.src_tile_row = src_tile_row
         self.src_tile_col = src_tile_col
@@ -64,24 +65,21 @@ def substring(a, b) -> str:
     script_dir = os.path.dirname(os.path.abspath(__file__))
 
     case_params_list = [
-        TReluParams(np.float32, 64, 64, 64, 64, 64, 64),
-        TReluParams(np.int32, 64, 64, 64, 64, 64, 64),
-        TReluParams(np.float16, 16, 256, 16, 256, 16, 256),
-        TReluParams(np.int16, 64, 64, 64, 64, 64, 64),
-        TReluParams(np.float32, 64, 64, 64, 64, 60, 55),
-        TReluParams(np.int32, 64, 64, 64, 64, 60, 55),
-        TReluParams(np.float16, 64, 64, 96, 96, 64, 60),
-        TReluParams(np.int16, 64, 64, 96, 96, 64, 60),
+        TReluParams("case_0", np.float32, 64, 64, 64, 64, 64, 64),
+        TReluParams("case_1", np.int32, 64, 64, 64, 64, 64, 64),
+        TReluParams("case_2", np.float16, 16, 256, 16, 256, 16, 256),
+        TReluParams("case_3", np.int16, 64, 64, 64, 64, 64, 64),
+        TReluParams("case_4", np.float32, 64, 64, 64, 64, 60, 55),
+        TReluParams("case_5", np.int32, 64, 64, 64, 64, 60, 55),
+        TReluParams("case_6", np.float16, 64, 64, 96, 96, 64, 60),
+        TReluParams("case_7", np.int16, 64, 64, 96, 96, 64, 60),
     ]
     if os.getenv("PTO_CPU_SIM_ENABLE_BF16") == "1":
-        case_params_list.append(TReluParams(BF16_DTYPE, 16, 256, 16, 256, 16, 256))
+        case_params_list.append(TReluParams("case_bf16_16x256_16x256_16x256", BF16_DTYPE, 16, 256, 16, 256, 16, 256))
 
-    for i, param in enumerate(case_params_list):
+    for param in case_params_list:
         case_name = generate_case_name(param)
-        if i < 8:
-            output_dir = os.path.join(script_dir, f"TRELUTest.case_{i}")
-        else:
-            output_dir = os.path.join(script_dir, case_name)
+        output_dir = os.path.join(script_dir, f"TRELUTest.{param.output_case_name}")
         os.makedirs(output_dir, exist_ok=True)
         original_dir = os.getcwd()
         os.chdir(output_dir)