On his website, flammble materials expert witness William E. Gale, Jr., PhD, PE, CSP, CFEI, CFII, writes on computer fire modeling.
Modeling fires and explosions is a computer-intensive process requiring many gigabytes of RAM to implement the computational process, and significant hard drive space to store the results. Simple fire models can be run on a desktop system; however, more complex problems may take weeks to run on desktop PCs and work stations. Multiple computers linked together in parallel and arranged as a computer cluster is the proper venue for providing efficient and effective modeling capabilities.