On Tue, Feb 21, 2012 at 15:37, Justin C. Walker <jus...@mac.com> wrote: > > On Feb 21, 2012, at 14:16 , R. Andrew Ohana wrote: > >> On Tue, Feb 21, 2012 at 10:30, Justin C. Walker <jus...@mac.com> wrote: >>> >>> On Feb 21, 2012, at 08:13 , R. Andrew Ohana wrote: > [snip] >>>> FYI, sqrt5 has been down for awhile since it is extremely prone to >>>> kernel panics and I have yet to figure out the issue. My guess at this >>>> point in time is that these are due to it using the 32-bit kernel, >>>> which apple clearly isn't supporting any more -- the main requirement >>>> of 10.8 over 10.7 is support for the 64-bit kernel. >>> >>> Is this true? >> >> Positive: >> >> $ uname -pr >> 11.3.0 i386 >> >>> My 10.7 system has a 64-bit kernel, at least according to 'file': >>> >>> $ file /mach_kernel >>> /mach_kernel: Mach-O universal binary with 2 architectures >>> /mach_kernel (for architecture x86_64): Mach-O 64-bit executable x86_64 >>> /mach_kernel (for architecture i386): Mach-O executable i386 >> >> OSX has included extensions in the 32-bit kernel to execute 64-bit >> code since leopard (or potentially earlier), this only indicates that >> the kernel + hardware supports executing 64-bit code. > > I don't think this is really correct. This is what the Apple website says: > > ========= > These Macs use the 64-bit kernel by default in Mac OS X v10.6. > > • Mac Pro (Mid 2010) > • MacBook Pro (Early 2011) > • iMac (21.5-inch and 27-inch, Mid 2011) > =========
Yes, although for lion it seems to be a much larger number of systems. > > I'm running the MacBook Pro (Early 2011). 'uname -pr' Looking at another system that has booted with the 64-bit kernel it seems that -p does not distinguish, but -m does: sqrt5:~ uname -m i386 sage1:~ uname -m x86_64 'file /mach_kernel' matches on these two systems > says what you report, but I think that is the "basic ISP" architecture, which > is, and I assume will be, i386. > > The kernel being "x86_64" means that it actually runs in 64-bit mode. > > Justin > > -- > Justin C. Walker, Curmudgeon-At-Large > Institute for the Absorption of Federal Funds > -------- > If you're not confused, > You're not paying attention > -------- > > > > -- > To post to this group, send an email to sage-devel@googlegroups.com > To unsubscribe from this group, send an email to > sage-devel+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/sage-devel > URL: http://www.sagemath.org -- Andrew -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
