@stevesong said:
... but luckily Leopard will, according to Apple, run 32 bit software with no problem.
Good stuff, Professor. It's your last statement that is at once a reason celebrate and a reason to wonder. 32-bit addressing lives on. Yay!!
But it also means that 64-bit addressing is less of a priority than it is an eventuality. In time-- in time... it will all come around, no doubt.
And it's good in the bigger picture because it doesn't sound as if there will be any downtime for users.
But for VI users, it's also understandable why the desire for more/better RAM access and instance counts generates everything from wonder to anxiety, partly fueled for Mac users by machines that now take 16GB RAM.
But here's the twist with it all: to release 64-bit apps too soon is unwise because not everyone has a MacPro just yet and sales would be relatively slow until such time enough of the Mac market will buy into the hardware capable of running the software. That catch-22 is that this is because apps have been slow to go Universal Binary, but that's coming along nicely. One thing Apple has playing in its favor is that even the PPCs that take 8GB RAM will benefit as well, so the transition is not such a rocky one, however slow. Even with PPCs, I'm sure that Apple is eager to leave the IBM architecture behind and having to optimize on both platforms must be anything but a cinch.
Perhaps Apple is putting the cart (hardware) before the horse (software) in a sense, but if the hardware is establishing itself already, then I have to think that Apple's Pro applications are prime candidates for 64-bit threading some time soon-- and that includes Logic, and that's good news for Logic musicians. But then we heard some of the same things with Panther and Tiger which never transpired.
I'm leaning towards the notion that the real attractiveness of Leopard's 64-bit threading will mean little unless Apple releases its pro apps in 64-bit at or around the same time that Leopard is released. Otherwise, it's all vapor and hype as it was at the autumn MacWorld convention-- which was followed up by a very conspicuous silence about it in January.
The entire process is both awkward and clever, really.