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在多对称处理器集群体系结构下进行独立成分分析并行算法研究,在共享内存模型一级并行算法基础上,通过同步、异步迭代两种方式并行计算固定点函数,分别提出具有两级并行特性的二级同步、二级异步并行端元提取算法,并结合两者的优势,进一步提出二级分组并行算法。实验评价表明,二级同步、分组并行算法在保持原算法精度的同时,大大提高了原算法的效率,体现出良好的并行计算性能,而二级异步并行算法可在节点数较少的情况下适用。 更多还原

【Abstract】 This paper analyzes parallel ICA algorithm in symmetrical multi-processing(SMP) cluster architecture.Based on our proposed single-level share memory model parallel ICA algorithm,two-level synchronous and asynchronous parallel ICA algorithms are presented,respectively,in the manner of synchronous and asynchronous parallel iteration for computing fixed-point function.By the use of these algorithms,two-level grouping parallel ICA algorithm is also proposed.In experiment with real hyperspectral remo...