which one of the systems is best for my

[dkouroun at mailbox.gr]

Dear sirs,
Thank you for giving us for free the FreeBSD OS. It is a great relief haveing an OS for free! I would like to ask you since I am a newbie which is the Operating system which suits best for an Opteron dual box?
Is it 
FreeBSD AMD64 or
FreeBSD IA64?

Can somebody install
FreeBSD i386 on an Opteron Dual Box?
How much memory do those systems support?
Are they compatible with OpenMP and MPI ?
Is there any Linux alternative to FreeBSD for 64bit OS (SuSe or RedHat) which one would you suggested?

Thanks in advance!
Drosos.


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