Stephan Güsken

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In order to compute physical quantities in lattice quantum chromodynamics huge systems of linear equations have to be solved. The availability of eecient parallel Krylov subspace solvers plays a vital role in the solution of these systems. We present a detailed analysis of the performance of the stabilized biconjugate gradient (BiCGStab) algorithm with(More)
The cost for stochastic sampling of QCD vacuum conngurations outweighs by far the costs of the remaining computational tasks in Lattice QCD, due to the nonlocal forces arising from the dynamics of fermion loops in the vacuum uctuations. The evaluation of quality and hence eeciency of sampling algorithms is largely determined by the assessment of their(More)
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