Abstract: Aiming at the problem of occupying large computation resources in the process of building fire numerical simulation, a new parallel computation method based on load balance is proposed. The method is based on the characteristics of number of grid, communication boundary, fire location and combustible density. This method is applied to the wholesale market large fire parallel numerical simulation, and the results show that this method has better parallel efficiency, and verify the feasibility of the method, compared with the traditional topology partition method.

Key words: building fire, domain decomposition, load balance, parallel computation