ARL中Clean算法的并行化研究
Research on parallelization of Clean algorithm in ARL
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摘要: 针对SKA算法参考库ARL中的去卷积算法运行效率低、无法满足海量数据实时处理的问题,提出了CPU和GPU协同工作模式下的并行化Clean算法.该方法将Clean算法中可以并行计算的步骤利用多线程在GPU上并行执行,将无法并行计算的步骤在CPU上串行执行.验证实验结果表明,在数据逐渐增大的过程中,并行化Clean算法比在CPU上的串行处理运行时间显著减少,当图达到4096像素×4096像素时,可以有10倍的提速.这说明并行化Clean算法在处理海量数据时,能够显著提高运算效率.Abstract: The deconvolution algorithm in the ARL of the SKA algorithm reference library is inefficient and cannot meet the needs of real-time processing of massive data. The parallelized Clean algorithm in the cooperative working mode of CPU and GPU was proposed. The steps of parallel computing in Clean algorithm were executed in parallel on GPU using multi-threads, and the steps in the Clean algorithm that couldn't be parallelized were executed serially on the CPU. The results showed that the running time of parallel Clean algorithm under CPU and GPU cooperative mode was significantly shorter than that under CPU. When the image size reached 4096×4096, the parallel Clean algorithm GPU cooperative mode could be speeded up by 10 times, which showed that the parallel Clean algorithm could significantly improve the efficiency of operation when dealing with massive data.
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Key words:
- ARL /
- deconvolution algorithm /
- CUDA /
- parallel computing /
- Clean algorithm
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