diff --git a/include/core/kernel.h b/include/core/kernel.h
index 3ef0d1b9..a19f3f1a 100644
--- a/include/core/kernel.h
+++ b/include/core/kernel.h
@@ -2,6 +2,7 @@
 #include "core/common.h"
 #include "core/operator.h"
 #include "core/tensor.h"
+#include "utils/operator_utils.h"
 #include <functional>
 #include <nlohmann/json.hpp>
 using json = nlohmann::json;
@@ -102,11 +103,9 @@ class KernelRegistry {
     }
     Kernel *getKernel(const KernelAttrs &kernelAttrs) const {
         auto it = kernels.find(kernelAttrs);
-        IT_ASSERT(it != kernels.end(),
-                  "Kernel not found for key {" +
-                      to_string(enum_to_underlying(std::get<0>(kernelAttrs))) +
-                      ", " + std::to_string(std::get<1>(kernelAttrs)) + ", " +
-                      std::get<2>(kernelAttrs).toString() + "}");
+        IT_ASSERT(it != kernels.end(), "Kernel not found for key {" +
+                                           get_kernel_attrs_str(kernelAttrs) +
+                                           "}");
         return std::get<0>(it->second);
     }
     const KernelRecord &getKernelItem(const KernelAttrs &kernelAttrs) const {
diff --git a/include/utils/operator_utils.h b/include/utils/operator_utils.h
index 4f6a6985..1b3a1eb2 100644
--- a/include/utils/operator_utils.h
+++ b/include/utils/operator_utils.h
@@ -2,6 +2,7 @@
 #ifndef OPERATOR_UTIL_H
 #define OPERATOR_UTIL_H
 
+#include "core/operator.h"
 #include "core/tensor.h"
 
 namespace infini {
@@ -10,8 +11,10 @@ namespace infini {
 Shape infer_broadcast(const Shape &A, const Shape &B);
 // Launch the real axis based on rank and current axis
 int get_real_axis(const int &axis, const int &rank);
-// check if tensor B is unidirectional broadcastable to tensor A
+// Check if tensor B is unidirectional broadcastable to tensor A
 bool is_unidirectional_broadcasting(const Shape &A, const Shape &B);
+// Convert KernelAttrs to a string representation
+std::string get_kernel_attrs_str(const KernelAttrs &kernelAttrs);
 } // namespace infini
 
 #endif
diff --git a/src/utils/operator_utils.cc b/src/utils/operator_utils.cc
index a9b81a5e..76a1d91f 100644
--- a/src/utils/operator_utils.cc
+++ b/src/utils/operator_utils.cc
@@ -1,4 +1,5 @@
 #include "utils/operator_utils.h"
+#include "core/runtime.h"
 
 namespace infini {
 
@@ -64,4 +65,29 @@ bool is_unidirectional_broadcasting(const Shape &A, const Shape &B) {
     }
     return true;
 }
+
+std::string device_to_str(Device device) {
+    std::string deviceStr;
+    switch (device) {
+    case Device::CPU:
+        return "CPU";
+    case Device::CUDA:
+        return "CUDA";
+    case Device::BANG:
+        return "BANG";
+    case Device::INTELCPU:
+        return "INTELCPU";
+    case Device::KUNLUN:
+        return "KUNLUN";
+    default:
+        IT_TODO_HALT();
+    }
+}
+
+std::string get_kernel_attrs_str(const KernelAttrs &kernelAttrs) {
+    std::string deviceStr = device_to_str(std::get<0>(kernelAttrs));
+    std::string opStr = OpType(std::get<1>(kernelAttrs)).toString();
+    std::string datatypeStr = std::get<2>(kernelAttrs).toString();
+    return deviceStr + ", " + opStr + ", " + datatypeStr;
+}
 } // namespace infini