Speaker
Prof.
Tilo Wettig
(University of Regensburg)
Description
We present details of our implementation of the Wuppertal
adaptive algebraic multigrid code on SIMD architectures, with
particular emphasis on the Intel Xeon Phi processor (KNC) used in
QPACE 2. As a smoother, the algorithm uses a
domain-decomposition-based solver code previously developed for
the KNC in Regensburg. We optimized the remaining parts of the
multigrid code and conclude that it is a very good target for
SIMD architectures. Some of the remaining bottlenecks can be
eliminated by a multiple-right-hand-sides setup, which is
discussed in the contribution of Daniel Richtmann.
Primary author
Dr
Simon Heybrock
(University of Regensburg)
Co-authors
Matthias Rottmann
(University of Wuppertal)
Peter Georg
(University of Regensburg)
Prof.
Tilo Wettig
(University of Regensburg)
