Author: Robert Hyatt
Date: 19:44:55 09/07/03
Go up one level in this thread
On September 07, 2003 at 12:20:43, Gian-Carlo Pascutto wrote: >On September 07, 2003 at 11:47:33, Robert Hyatt wrote: > >>>The normal version will not run 64 bit programs. >> >>How can it _Prevent_ 64 bit instructions? >> >>It can't... >> >>>>When might a 64 bit version of WS 2003 be available for the Opteron system? >>> >>>Only Microsoft know this... >>> >>>>Until the Opteron has a 64 bit version of WS 2003 out ,wouldn't another OS >>>>from Windows work on the Operton system? >>> >>>Yes, but it will not run 64 bit programs. >> >>Again, this is wrong. The O/S can't prevent my program from executing 64 >>bit instructions if I want to, as they are not privileged instructions. The >>O/S might prevent me from addressing beyond 4 gigabytes... but that's about >>all it can prevent. > >Uh, how is your program going to work when you lose half your register >file on each context switch? > >-- >GCP Uh, I am not going to lose anything. Since the O/S isn't changing the _other_ registers, and since I will be the only application running that is using those registers, there is no real problem. Not 100% safe if you run lots of other stuff, but I did it on the Cray more than once with no problems whatsoever...
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.