Speaker
Mr
Simone Bacchio
(University of Cyprus - University of Wuppertal)
Description
We extend the Adaptive Aggregation Based Domain Decomposition Multigrid (DD-$\alpha$AMG) algorithm to $N_f=2$ twisted mass fermions. We show numerical results for an $N_f=2$ ensemble of twisted fermions with a clover term simulated at the physical value of the pion mass. We fine-tuned the parameters to achieve a speedup comparable to the one obtained for clover fermions. We also present a complete analysis of the aggregation parameters that provides a novel insight on the multigrid methods for lattice QCD independently of the fermion discretization.
Primary authors
Dr
Jacob Finkenrath
(The Cyprus Institute)
Mr
Simone Bacchio
(University of Cyprus - University of Wuppertal)
Co-authors
Prof.
Andreas Frommer
(University of Wuppertal)
Prof.
Constantia Alexandrou
(University of Cyprus - The Cyprus institute)
Dr
Karsten Kahl
(University of Wuppertal)
Dr
Matthias Rottmann
(University of Wuppertal)
