--- Eugen Leitl <[EMAIL PROTECTED]> wrote: > On Sun, May 13, 2007 at 05:23:53PM -0700, Matt Mahoney wrote: > > > It is not that hard, really. Each of the 10^5 PCs simulates about 10 mm^3 > of > > You know, repeating assertions doesn't make them any more true. > > > brain tissue. Axon diameter varies but is typically 1-2 microns. This > means > > Where have you pulled that number from? Why not um^3, or m^3, or a cubic > lightyear?
I assumed you knew that the human brain has a volume of 1000 to 1500 cm^3. If you divide this among 10^5 processors then each processor would simulate a cube about 2 to 2.5 mm on a side with a surface area of about 25-35 mm^2. The little cubes only need to communicate with their 6 neighbors, so you can map the simulation onto a hierarchical network where most of the communication is local. -- Matt Mahoney, [EMAIL PROTECTED] ----- This list is sponsored by AGIRI: http://www.agiri.org/email To unsubscribe or change your options, please go to: http://v2.listbox.com/member/?member_id=4007604&user_secret=8eb45b07
