Page 1 of 1
Multi Core Switch Issue
Posted: Tue Oct 27, 2009 7:11 pm
by NAVMAN
Greetings: I have a dual core intel sys. Processors are #0 and #1.
I have the command line set to: -cpu0. When I check task mgr, while game
is running, it has a check mark for both processors. Should it not only
be checked next to processor "0"? When I uncheck "1", it will
revert to both the next time I boot up and play again. Any ideas?
Thx.
RE: Multi Core Switch Issue
Posted: Tue Oct 27, 2009 10:05 pm
by wdolson
You should use -cpu1 or -cpu2. -cpu0 does nothing. Documentation for the processor affinity is usually 0 based, ie the first core is processor #0, but most users don't think that way, so the cpu command line switches are 1-4. -cpu3 and -cpu4 won't work in your case since you only have a dual core.
Bill
RE: Multi Core Switch Issue
Posted: Tue Oct 27, 2009 11:02 pm
by NAVMAN
Bill,
Thx for the info. Looks like that did the trick. Set it to cpu1. Task mgr shows
cpu0 as the active processor. Much appreciated. BTW, on systems w/Intel processors,
do games, in general, show better performance w/using one processor rather than
multiple processors? I understand it varies by system.
Thx again.
RE: Multi Core Switch Issue
Posted: Wed Oct 28, 2009 12:11 am
by wdolson
It varies a lot depending on the game and the other hardware in the computer. Some Intel multicores have no problems with AE for example. I think it's due to how the chipset is implemented on the motherboard. We had to include all those switches because it's an area where there are so many differences between computers.
Bill
RE: Multi Core Switch Issue
Posted: Wed Oct 28, 2009 4:00 am
by PaxMondo
So should AE be using both cores, or just one? I have a dual core, with the switch set to -cpu2 and only the 2nd cpu is being used. first core is just idle.
RE: Multi Core Switch Issue
Posted: Wed Oct 28, 2009 7:20 am
by herwin
ORIGINAL: wdolson
It varies a lot depending on the game and the other hardware in the computer. Some Intel multicores have no problems with AE for example. I think it's due to how the chipset is implemented on the motherboard. We had to include all those switches because it's an area where there are so many differences between computers.
Bill
What has been the experience with MacBook Pros?
RE: Multi Core Switch Issue
Posted: Wed Oct 28, 2009 8:05 am
by wdolson
I'm not sure what people have seen with Macbooks. The best thing to do is experiment with the command line switches. Each computer is going to be different. The only thing I can say for sure is that a single core never needs any switches to get best performance.
Bill
RE: Multi Core Switch Issue
Posted: Wed Oct 28, 2009 9:59 pm
by NAVMAN
Bill.
OK. Thx.