Author: Greg Lindahl
Date: 12:51:32 12/20/99
Go up one level in this thread
On December 19, 1999 at 10:18:32, Magnus Homann wrote: >The problem with using the FPGA as a custom "co-processor" is that >communicatuion CPU-FPGA likely swamps any other speedup you might get. This is a worry, but less of one than you think. It takes about 1usec to grab the PCI bus and communicate a few bytes to a card. However, once you're talking to a PCI card and everyone is obeying the rules for write combining, etc, you can communicate a fair amount of information in a short time. Array processors are a classic example: it used to be worthwhile to move real numbers over the bus in order to add them. Now it isn't. Encryption is another example where a fairly large number of bytes have to be moved. Chess invovles moving much less data than that. -- g
This page took 0.01 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.