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MICROSCOPIC NUCLEAR STRUCTURE ON A PARALLEL PLATFORM

机译:平行平台上的微观核结构

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Numerical techniques, used to solve a system of stiff nonlinear partial differential equations in a Hartree-Fock mean field description of the structure of the nucleus, are described in detail. A full three-dimensional discrete representation is obtained using a collocation basis-spline spatial lattice, which provides a superior method as compared to traditional approaches. The set of Hartree-Fock equations reduce, in this case, to various matrix vector multiplications and other elementary operations. Parallelization is achieved by mapping the state vectors onto the nodes, using the Intel Paragon and iPSC/860. Procedures used to perform global operations and broadcasts, and a discussion on increasing the vectorization efficiency are presented. Special attention is given to reduce the communication overhead. An algorithm to pipeline the message passing procedures within the Gram-Schmidt orthogonalization routine is discussed in detail. [References: 19]
机译:详细介绍了用于解决硬核非线性偏微分方程组的Hartree-Fock平均场描述中的原子核结构的数值技术。使用并置基础样条空间格可获得完整的三维离散表示,与传统方法相比,它提供了一种更好的方法。在这种情况下,Hartree-Fock方程组简化为各种矩阵矢量乘法和其他基本运算。通过使用Intel Paragon和iPSC / 860将状态向量映射到节点上,可以实现并行化。介绍了用于执行全局操作和广播的过程,以及有关提高矢量化效率的讨论。特别注意减少通信开销。详细讨论了在Gram-Schmidt正交化例程中传递消息传递过程的算法。 [参考:19]

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