Analysis Method of Energy for C Source Program and Its Application

Effective management of energy is the urgent task for high performance computing, but the analysis methods for energy of computer are very lack. This paper presents an analysis method of energy for C source program. Based on the basic operations and structure of C program, we present a classification of atomic operation, and establish an energy database of these atomic operations by means of experiment. Then we propose three kinds of energy calculation method for the sequential statement block, if statement block, for statement block, respectively. After changing the whole C program into a flow analysis tree, we put forward energy prediction algorithm for such a C source program. Finally, some classic algorithms are chosen to test and verify our prediction. The results show that our method has good feasibility and rationality.