The first large scale detailed virtual human brain, with functions limited to visual processing and writing on a virtual chalkboard, able to answer simple questions, was reported in this issue of Science Magazine. Known as Spaun, it was created using the Nengo simulation software package, and run on clusters Orca and Kraken of the SharcNet High Performance Computing Consortium. In other words, it is run on a Linux based supercomputer.It takes up about 24GB of ram and takes about 2.5 hours of processing for one second of simulated time.