Fires annually cause losses of lives, bodily harm, and damage to property; therefore, it is important to research them to prevent or eventually limit potential fires. Computer simulation is one of the possibilities for minimizing the consequences of fires and increasing the safety of structures from damage caused by fire. Our work deals with the computer simulation of fire and smoke spread in an industrial hall. We prepared and realized a set of simulations of fire in three industrial halls with the same geometry but that varied in the heights of their ceilings using parallel version of the FDS simulation system. From the results obtained we analyzed the effect of height of the ceiling and the fire bariers on the fire course and smoke spread dynamics.