  It has long been conjectured that certain supersymmetric Yang-Mills (SYM)
theories provide us with nonperturbative formulations of the string/M-theory.
Although the supersymmetry (SUSY) on lattice is notoriously difficult in
general, for a class of theories important for the string/M-theory various
lattice and non-lattice methods, which enable us to study them on computers,
have been proposed by now. In this talk, firstly I explain how SYM and
string/M-theory are related. Then I explain why the lattice SUSY is difficult
in general, and how the difficulties are solved in theories related to
string/M-theory. Then I review the status of the simulations. It is explained
that some stringy effects are correctly incorporated in SYM. Furthermore,
concrete values can be obtained from the SYM side, even when a direct
calculation on the string theory side is impossible by the state-of-the-art
techniques. We also comment on other recent developments, including the
membrane mini-revolution in 2008 and simulation of the matrix model formulation
of the string theory.
