  Thermo-osmotic slip -- the flow induced by a thermal gradient along a surface
-- is a well-known phenomenon, but curiously there is a lack of robust
molecular-simulation techniques to predict its magnitude. Here, we compare
three different molecular simulation techniques to compute the thermo-osmotic
slip at a simple solid-fluid interface. Although we do not expect the different
approaches to be in perfect agreement, we find that the differences are barely
significant for a range of different physical conditions, suggesting that
practical molecular simulations of thermo-osmotic slip are feasible.
