I have a SOPINE cluster board that I'd quite like to get booted up and pressed into some sort of useful service.

I think the biggest problem with cluster products is that they just don't work out of the box. Vendors haven't really done the "last 2%" of development required to make them viable - its left to us purchasers to get the final bits in place.

Still, it'll make a fun distributed computing experimental platform some day.

Just like the Inmos Transputer I've got somewhere, sitting in a box, waiting for a power supply ..