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arXiv 0901.3512hep-lat
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多右端格点量子色动力学问题中线性方程组的种子方法

Seed methods for linear equations in lattice qcd problems with multiple right-hand sides

Abdou Abdel-Rehim, Ronald B. Morgan, Walter Wilcox

摘要:

我们考虑三个改进的种子方法的埃尔米特线性系统与多个右手边:只有Krylov子空间的第一个系统是用于播种后续的右手边,第一右手边是解决过去的收敛,并定期重新正交化是为了控制roundanimation错误与共轭梯度算法。该方法进行了测试的情况下,威尔逊费米子附近的Kappa临界和一个相当大的速度收敛观察。

英文摘要:

We consider three improvements to seed methods for Hermitian linear systems with multiple right-hand sides: only the Krylov subspace for the first system is used for seeding subsequent right-hand sides, the first right-hand side is solved past convergence, and periodic re-orthogonalization is used in order to control roundoff errors associated with the Conjugate Gradient algorithm. The method is tested for the case of Wilson fermions near kappa critical and a considerable speed up in the convergence is observed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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