  We perform lattice simulations of N D0-branes at finite temperature in the
decoupling limit, namely 16 supercharge SU(N) Yang-Mills quantum mechanics in
the 't Hooft limit. At low temperature this theory is conjectured to be dual to
certain supergravity black holes. We emphasize that the existence of a
non-compact moduli space renders the partition function of the quantum
mechanics theory divergent, and we perform one loop calculations that
demonstrate this explicitly. In consequence we use a scalar mass term to
regulate this divergence and argue that the dual black hole thermodynamics may
be recovered in the appropriate large N limit as the regulator is removed. We
report on simulations for N up to 5 including the Pfaffian phase, and N up to
12 in the phase quenched approximation. Interestingly, in the former case,
where we may calculate this potentially difficult phase, we find that it
appears to play little role dynamically over the temperature range tested,
which is certainly encouraging for future simulations of this theory.
