Computer simulation implementations and optimization of the right atrium of the heart based on GPU

For heart right atrium electrophysiology simulation computation huge, time-consuming problem, a method based on high-performance graphics processing unit (GPU) to achieve parallel computing and optimization. First, consider the differences between right atrial heart cell center and the edge of the constructed one-dimensional non-homogeneous cardiac tissue model right atrium; operator split method enables solution of the model calculation task with parallelism. Presents three parallel strategies based on the specific solver process, and which takes the shortest thread blocks from the policy settings were further optimized data storage mode switching frequencies and so on. The results show that: for simulation 500 cells CUDA program execution time than the serial program fell by 60%, after further optimized CUDA program execution time can be reduced by 84%; the greater the right atrial cardiac tissue, GPU acceleration effect more obviously. The results verify the GPU acceleration solution method can significantly increase the heart rate right atrium solver model, reduce the actual execution time.