On Tue, 2005-11-22 at 10:39 +0100, Alex Yuner wrote:

Hello to everybody, it´s possible run 32 bits program on a 64 bits CentOS core??

Yes, provided you have the required 32-bit libraries loaded. The default install works pretty well for this except for a few issues like 32-bit plugins will not work with 64-bit browsers.

Phil

Alex Yuner el_yuner2000@yahoo.es wrote:

Hello to everybody, it´s possible run 32 bits program on a 64 bits CentOS core??

I've answered this enough times that I blogged it a few weeks back:

http://thebs413.blogspot.com/2005/10/what-is-x86-64-long-mode-memory-model.h...

That should answer any question(s) you might have.

If you really don't feel like reading my verbage, then note this ...

'48-bit "flat" programs cannot call 32-bit "flat" libraries and vice-versa. It's not the kernel, but the way programs talk to each other. Outside of the kernel, if an OS ships with 48-bit libraries, then they cannot be used by 32-bit programs. Therefore, some x86-64 OSes only ship with a PAE52 kernel, but still offer largely 32-bit libraries and programs, with a few 48-bit exceptions.'

An x86-64 version of a Linux distro is a PAE52/48-bit "flat" kernel that can also run PAE36/32-bit programs, but those PAE36/32-bit programs _still_ require PAE36/32-bit libraries, plug-ins, etc... Some are included, and others can be added if needbe, although there can be administrative issues/overhead.