[Aurora-sparc-user] My machine is 64 bit, but does it think it is 32 bit?

[Dennis Gilmore]

On Monday 22 October 2007 2:56:53 am Stephen Ware wrote:
> Hi Aurora group!
>
> I've just recently downloaded Aurora and installed it on some old Sun
> Ultra 10's at my school in the hopes of making them into a cluster.
> The program I want to compile and run is called GAMESS, which is a
> quantum chemistry program that can run in parallel.  Because there is
> no pre-compiled version for SPARC, I am building it from source.  In
> the configuration process, I have to choose several options based on
> the operating system of the computer.  My first instinct was to choose
> "64 bit linux" since the Ultra 10 is a 64 bit machine, but as I was
> reading around online about other SPARC linux ports, I realized that
> perhaps some applications are running in 32 mode.  GAMESS is mostly
> fortran with a tiny bit of C, and I am compiling it from the command
> line.  Should I choose the 64 bit options, or the 32 bit option?

The entire userland for aurora is 32 bit.  you will find the only 64 bit thing 
installed is the kernel.

so you will need to compile 32 bit

Dennis