Research Heaven, West Virginia 1 Translation Validation of Compilers for Model-based Programming Supratik Mukhopadhyay Research Heaven, West Virginia 2 Why Model-based Programming? Most effective way to amortize software development cost is to make the software plug and play Immobots programmed by specifying component models of hardware and software behavior to support plug and play Development of model libraries reduces design time, facilitate reuse and amortize modeling costs Reduces sensitivity to modeling inaccuracies and hardware errors Validation can be done in an early phase % - 25 % - 75 % - 50 % Research Heaven, West Virginia 3 Model-based Development at NASA Much publicized use of Remote Agent autonomy architecture used in Deep Space Mode Identification and Recovery (MIR) component uses Lisp-based Livingstone (L1) Integrated Vehicle Health Management (IVHM) system Accepts models of components of system; infers overall behavior of system Being used in the next-generation shuttle project for Vehicle health management Research Heaven, West Virginia 4 Livingstone: How it works Model in JMPL JMPL Compiler Model in XMPL Livingstone (L2) Source in C++ C++ Compiler Livingstone Executable System Behavior Are these translations correct? Research Heaven, West Virginia 5 In other words Is the right model getting fed to Livingstone? Is Livingstone correctly inferring behavior of the system? Research Heaven, West Virginia 6 Things can go wrong i=0 0