Author: Vincent Diepeveen
Date: 10:59:07 10/24/03
Go up one level in this thread
On October 24, 2003 at 13:38:13, Robert Hyatt wrote: >On October 23, 2003 at 22:29:39, Vincent Diepeveen wrote: > >>On October 22, 2003 at 11:28:09, Gerd Isenberg wrote: >> >>>On October 22, 2003 at 03:33:05, Daniel Clausen wrote: >>> >>>>On October 21, 2003 at 15:29:19, Eugene Nalimov wrote: >>>> >>>>>On Itanium integer registers are actually 65 bits wide. 64 bits for data and one >>>>>NAT (not a thing) bit. >>>>> >>>>>:-) >>>>> >>>>>Thanks, >>>>>Eugene >>>> >>>>If there is a way to use this bit for yourself too, I'm sure Gerd will come up >>>>with another cool new algorithm! :) >>>> >>>>Sargon >>> >>>;-) >>> >>>I'm really not familar with this very interesting processor architecture. It has >>>an integer register file of 128! * 64+NaT. It seems well designed to do a lot of >>>parallel fill cycles. >>>I guess a set NaT-bit may trigger some exceptions/interrupts if you do some >>>operations with uninitialited registers, allowing some lowlevel try-catch like >>>control structures (including stack rewind?). >>> >>>Gerd >> >>Itanium2 is especially known for executing many NOP instructions :) >> >>Nah it isn't that bad. It's a cool cpu in fact. Too bad it can't be clocked very >>high. >> >>It's horror & co for bitboards though. Forget writing in assembly for that >>processor :) > >Why do you make such uninformed statements? It is _not_ "horror and co for >bitboards". It works _great_ for bitboards. > >And _you_ might forget writing in asm, but I have written asm for VLIW >architectures in the past. It is not that difficult. But then again, >I am very flexible. Rigidity always has problems bending into a new >"shape". Diep, which is a 32 bits program and doesn't fit in 16KB instruction cache, is profitting more from itanium2 than crafty does. Crafty as you might know is a 64 bits program which is fitting a whole lot easier in that 16KB instruction cache than diep is. End of proof.
This page took 0 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.