[Bugfix] fix benchmark moe (#14653)

Signed-off-by: Jee Jee Li <pandaleefree@gmail.com>

benchmarks/kernels/benchmark_moe.py

@@ -365,6 +365,7 @@ class BenchmarkWorker:
         dtype: torch.dtype,
         use_fp8_w8a8: bool,
         use_int8_w8a16: bool,
+        block_quant_shape: List[int] = None,
     ) -> tuple[dict[str, int], float]:
         current_platform.seed_everything(self.seed)
         dtype_str = get_config_dtype_str(dtype,
@@ -385,10 +386,17 @@ class BenchmarkWorker:
         else:
             config = op_config[min(op_config.keys(),
                                    key=lambda x: abs(x - num_tokens))]
-        kernel_time = benchmark_config(config, num_tokens, num_experts,
-                                       shard_intermediate_size, hidden_size,
-                                       topk, dtype, use_fp8_w8a8,
-                                       use_int8_w8a16)
+        kernel_time = benchmark_config(config,
+                                       num_tokens,
+                                       num_experts,
+                                       shard_intermediate_size,
+                                       hidden_size,
+                                       topk,
+                                       dtype,
+                                       use_fp8_w8a8,
+                                       use_int8_w8a16,
+                                       num_iters=100,
+                                       block_quant_shape=block_quant_shape)
         return config, kernel_time
 
     def tune(
@@ -487,6 +495,14 @@ def save_configs(configs: dict[int, BenchmarkConfig], num_experts: int,
         f.write("\n")
 
 
+def get_weight_block_size_safety(config, default_value=None):
+
+    quantization_config = getattr(config, 'quantization_config', {})
+    if isinstance(quantization_config, dict):
+        return quantization_config.get('weight_block_size', default_value)
+    return default_value
+
+
 def main(args: argparse.Namespace):
     print(args)
     block_quant_shape = None
@@ -508,7 +524,7 @@ def main(args: argparse.Namespace):
         topk = config.num_experts_per_tok
         intermediate_size = config.moe_intermediate_size
         shard_intermediate_size = 2 * intermediate_size // args.tp_size
-        block_quant_shape = config.quantization_config['weight_block_size']
+        block_quant_shape = get_weight_block_size_safety(config)
     elif config.architectures[0] == "Qwen2MoeForCausalLM":
         E = config.num_experts
         topk = config.num_experts_per_tok