No, that's a limit set by the ubuntu 32 bit kernel maintainers when they configured and compiled the kernel (again, see my comment about the problem being with developers and users). I think the limit is 256 for x86, 4096 for ia64 (itanium), even old versions of RHEL supported 16 and 32 logical CPUs for x86 :
http://support.bull.com/ols/product/system/linux/redhat/help/kbf/g/inst/PrKB11417 http://cateee.net/lkddb/web-lkddb/NR_CPUS.html On Fri, Apr 13, 2012 at 3:08 PM, James Stroud <[email protected]> wrote: > > On Apr 13, 2012, at 1:24 PM, James Holton wrote: > > I tried downgrading the operating system to 32-bit, but that reduced the > number of "CPUs" available in the system from 24 to 8. Still don't know why > that is > > > I'm probably wrong, but I'll guess that a 32 bit operating system can only > spare 3 of those bits to address CPUs ;-) > > James > >
