Simulation Interface

According to the model recompile and link back technique, Kathryn optimizes the simulation model by collecting model data, generating to C++, recompiling model, and then linking back to main model.

• Sometimes, designers who linked model may encounter the low performance from context switching between the model and the simulation event(other simulation context)

• Kathryn allows designers to directly inject their simulation code after the C++ simulation model is generated.

• To do that, designers should pause the procedure before recompliing model stage.

•   class SimInterface{
        
      explicit SimInterface(CYCLE limitCycle,
                              std::string vcdFilePath,
                              std::string profileFilePath,
                              std::string genFileName = "proxySimAutoGen.cpp",
                              SimProxyBuildMode simProxyBuildMode =
                                SimProxyBuildMode::SPB_GEN |
                                SimProxyBuildMode::SPB_COMPILE |
                                SimProxyBuildMode::SPB_RUN
                              );
    };

• At first time, designers may run the framework by specifying SimProxyBuildMode parameter only SPB_GEN in SimInterface (mentioned in previous section), then Kathryn will stop when the model is generated only. (not compile and run the model)

• After that designeres may modify the C++ code named genFileName in modelCompile/generated/<genFileName>.cpp

• Designers will see the function userDefUserSke. this function will be invoked every cycle design may put their code there.

• Moreover, Kathryn will preserves the code between keyword KDMD_*. When the simulation model is regenerated, the code between the keyword will be saved and placed in the new file.

• After modifying the simulation code, designers may start the Kathryn with SimProxyBuildMode parameter only SPB_COMPILE and SPB_RUN.

•   //modelCompile/generated/<genFileName>.cpp
    __attribute__((always_inline)) inline void userDefUserSke(){
    
    //KDMD_manualDesigner
   
   
   
     //you may put the code between KDMD_ and KDMD_EN D the code will be not deleted
   
   
    //KDMD_END
    }