Modified Block BiCGSTAB for Lattice QCD

Details Modified Block BiCGSTAB for Lattice QCD Modified Block BiCGSTAB for Lattice QCD

2011-04-05

arxiv.org/abs/1104.0737v1

Physics

High Energy Physics

High Energy Physics - Lattice

5 pages, 2 figures, 1 table

Scientific paper

We present results for application of block BiCGSTAB algorithm modified by the QR decomposition and the SAP preconditioner to the Wilson-Dirac equation with multiple right-hand sides in lattice QCD on a $32^3 \times 64$ lattice at almost physical quark masses. The QR decomposition improves convergence behaviors in the block BiCGSTAB algorithm suppressing deviation between true residual and recursive one. The SAP preconditioner applied to the domain-decomposed lattice helps us minimize communication overhead. We find remarkable cost reduction thanks to cache tuning and reduction of number of iterations.

Affiliated with

Also associated with

No associations

Rating

Modified Block BiCGSTAB for Lattice QCD 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 Modified Block BiCGSTAB for Lattice QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modified Block BiCGSTAB for Lattice QCD will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-320817