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

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

2009-01-22

arxiv.org/abs/0901.3512v2

PoS LATTICE2008:038,2008

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 2 figures. Presented at the 26th International Symposium on Lattice Field Theory, Williamsburg, VA, USA, 14-19 Jul 20

Scientific paper

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.

Affiliated with

Also associated with

No associations

Rating

Seed methods for linear equations in lattice qcd problems with multiple right-hand sides does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Seed methods for linear equations in lattice qcd problems with multiple right-hand sides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seed methods for linear equations in lattice qcd problems with multiple right-hand sides will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-189944