Dynamical HISQ - University of Glasgow

RHMC improvements
There are a tool kits of faster algorithms
Higher order integrators (Omelyan ). In MILC code.
n-th root trick. detM =| detM 1/n | n =
∏ nj=1
∫
Dφ † Dφe −φ† j M −1/n φ j
Mass preconditioning
Chris Richards (Liverpool) used the above algorithms
(implemented by Clark) to get a 30% to 50% speed up with
Asqtad, but needed ∼ 4 months of tuning (Lots of
parameters and tradeoffs).
Dynamical HISQ – p. 8