  Kontsevich and Soibelman defined the notion of Donaldson-Thomas invariants of
a 3d Calabi-Yau category with a stability condition. A family of examples of
such categories can be constructed from an arbitrary cluster variety. The
corresponding Donaldson-Thomas invariants are encoded by a special formal
automorphism of the cluster variety, known as Donaldson-Thomas transformation.
  Fix two integers $m$ and $n$ with $1<m<m+1<n$. It is known that the
configuration space $\mathrm{Conf}_n(\mathbb{P}^{m-1})$, closely related to
Grassmannian $\mathrm{Gr}_m(n)$, is a cluster Poisson variety. In this paper we
determine the Donaldson-Thomas transformation of
$\mathrm{Conf}_n(\mathbb{P}^{m-1})$ as an explicitly defined birational
automorphism of $\mathrm{Conf}_n(\mathbb{P}^{m-1})$. Its variant acts on the
Grassmannian by a birational automorphism.
