diff --git a/src/application.cpp b/src/application.cpp
index ecd4f9c..b72335a 100644
--- a/src/application.cpp
+++ b/src/application.cpp
@@ -37,7 +37,7 @@ Application::Logger::Logger(std::string name) {
     cur_monitor_ = app->GetMonitor(name);
     cur_monitor_->Enter();
   } else {
-    throw NotFoundError("Monitor " + name);
+    throw NotFoundError("Logger", "Monitor " + name);
   }
 }
 
@@ -157,7 +157,7 @@ std::string Application::FindInputFile(const std::string& name) {
       if (fin) {
         return full_name;
       } else {
-        throw NotFoundError("Input file " + name);
+        throw NotFoundError("FindInputFile", "Input file " + name);
       }
     }
   }
@@ -169,7 +169,7 @@ std::string Application::FindInputFile(const std::string& name) {
     if (fin) {
       return name;
     } else {
-      throw NotFoundError("Input file " + name);
+      throw NotFoundError("FindInputFile", "Input file " + name);
     }
   }
 
diff --git a/src/exceptions.cpp b/src/exceptions.cpp
index 1f0efc5..c6b2d8d 100644
--- a/src/exceptions.cpp
+++ b/src/exceptions.cpp
@@ -48,3 +48,11 @@ std::string IndexError::GetMessage() const {
            arrayName_.c_str(), m_, mmax_);
   return buf;
 }
+
+std::string RuntimeError::GetMessage() const {
+  char buf[160];
+  snprintf(buf, sizeof(buf),
+           "RuntimeError: Expect %f but get %f for variable %s.",
+           expect_, val_, var_.c_str());
+  return buf;
+}
diff --git a/src/exceptions.hpp b/src/exceptions.hpp
index 733eb66..7a19ef6 100644
--- a/src/exceptions.hpp
+++ b/src/exceptions.hpp
@@ -146,4 +146,21 @@ class InvalidValueError : public ExceptionBase {
   virtual std::string GetClass() const { return "InvalidValueError"; }
 };
 
+//! An general runtime error
+class RuntimeError : public ExceptionBase {
+ public:
+  //! @param func Name of the unimplemented function, such as
+  //!     `ClassName::functionName`
+  RuntimeError(const std::string& func, std::string const& var,
+      double expect, double val)
+      : ExceptionBase(func), var_(var), expect_(expect), val_(val) {}
+
+  virtual std::string GetMessage() const;
+  virtual std::string GetClass() const { return "RuntimeError"; }
+ protected:
+  std::string var_;
+  double expect_;
+  double val_;
+};
+
 #endif  // SRC_EXCEPTIONS_HPP_