32 BIT os and 64 BIT processer
Moderator: Ras
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gedboy2112
32 BIT os and 64 BIT processer
If you have a 64 bit capable processer but only a 32 bit os can you use 64bit chess engines?
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Matthias Gemuh
- Posts: 3245
- Joined: Thu Mar 09, 2006 9:10 am
Re: 32 BIT os and 64 BIT processer
gedboy2112 wrote:If you have a 64 bit capable processer but only a 32 bit os can you use 64bit chess engines?
No.
My engine was quite strong till I added knowledge to it.
http://www.chess.hylogic.de
http://www.chess.hylogic.de
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bob
- Posts: 20943
- Joined: Mon Feb 27, 2006 7:30 pm
- Location: Birmingham, AL
Re: 32 BIT os and 64 BIT processer
No. The problem is that the 64 bit processor has 8 extra registers. The operating system doesn't know about them and will not save/restore them on context switch. So the CPU is put into X86 mode which excludes the extra registers from being acessed...gedboy2112 wrote:If you have a 64 bit capable processer but only a 32 bit os can you use 64bit chess engines?