Abstract:

Nucleon reactors need realtime accurate calculation of effective resonance integral or groupaveraged effective cross section to achieve the safety control of reactors. Because the whole calculation process involves a lot of integral operations and huge section data, the time consumption of conventional calculation methods  is considerably huge . Based on the compute unified device architecture (CUDA) platform, the whole calculation process with multithreaded operations at the same time can greatly improve the computing speed and reduce the time consumption with the help of the computing power of the graphic processing unit (GPU). Experimental results show that the parallel computing results on the GPUs have no significant difference from the original data, and the proposal improves the speedup significantly.

Key words: moderated source recurrence formula;effective resonance integral;CUDA;parallel computing;GPU