🚀 go-pugleaf

In a recent CACM article on volume rendering a good, real
example of the type of application that will need >32 bits
of address is presented:

	The smallest data set being massaged was 10x10x30,
	and the largest was 10,000x10,000x4,000 voxels.

True, these'll be sparse, but even sparsely such a picture will
occupy a lot of space. Especially when you add properties to
each voxel.

A while back a computer company I used to work for was talking
about architecting a machine for a flat 64 bit address space,
implementing only 40 at first. That was a good few years ago.
I'd guess that you'd have to start at 48 now, if you wanted that
to be a sales distinction.

(PS. that particular project never got off the ground)