This. I'm really bummed that so many of these things-- OpenMosix, OpenSSI, Kerrighed, etc, have died.

There's a lot of utility in stitching together many systems into one-- a middle ground between loosely coupled application-controlled distributed concurrency and tightly coupled SMP/NUMA.

Like if you want a big multiuser build farm, for instance, where you're not drowning in IPC and synchronization, but not everything maps well to distcc.

For what it's worth, ScaleMP will still sell you something more-or-less like that, at least for HPC systems, but I've never used it, and it seemed to have significant restrictions. There's also still (proprietary) bproc: https://www.penguincomputing.com/documentation/scyld-cluster...