  We propose a unified approach to reversible and irreversible PCA dynamics,
and we show that in the case of 1D and 2D nearest neighbour Ising systems with
periodic boundary conditions we are able to compute the stationary measure of
the dynamics also when the latter is irreversible. We also show how, according
to [DPSS12], the stationary measure is very close to the Gibbs for a suitable
choice of the parameters of the PCA dynamics, both in the reversible and in the
irreversible cases. We discuss some numerical aspects regarding this topic,
including a possible parallel implementation.
