So, then 64 bits is enough ( because the problems are being solved at present under 64 buts)? From personal experience, numerical ill behaved problems don't ben

So, then 64 bits is enough ( because the problems are being solved at present under 64 buts)? From personal experience, numerical ill behaved problems don't benifited from more precision, rather they benifited from being scaled to be numerically stable. Things like trust parameters, or preconditioners like SSOR.