Tom JONES <T(dot)Jones(at)cs(dot)ucl(dot)ac(dot)uk> writes:
> I'm aware that the on-disk format changes between releases. However,
> I'd like to know if it also varies across architectures.
Absolutely. Endianness, alignment, and floating-point format are all
machine dependent.
> Specifically, my home directory is NFS-mounted and I'd like to be
> able to run postmaster on both Sparc Solaris and Intel Linux
> using the same -D option (obviously not at the same time!).
You lose, I'm afraid :-(
regards, tom lane