Ok, is this meant to be serious at all??
first, which ppc/cell based blade computers was HPUX ported to? please reference this as this would be a real bold move by HP (Ive seen they do cracy stuff before, but still)
second, why should IBM license hpux, when its just as easy to strip a monolitic kernel than a microkernel, especially one that all services are written for large systems, with schedulers built for alot of cpu cores (8 spu is not that much), highly optimised for pa-risc, and later slow ported to itanium. filesystem service built for being posix compatable and if my memory is right, log based for accountability. Userspace libs never built for embedded, and hackish implementation of GNU world of tools. Yeah that makes sense?
third, microkernel is based on a tiny kernel with userspace services doing as much as possible, while monolothic kernel is based on a large binary, with often a hackish implemention of runtime modules which just replaces reference adresses with usefull code in runtime (kernel modules)(hackish is a little mean, since its pretty clean when you use it ) Ubuntu = linux = monolitic (this is usually the first lesson in any OS class you take (linus torvalds being called a moron for using monolitic design))
spp-ux is a predecessor for HPUX 11 (10 years + old system, hot in 2000) by a company that HP bought. pa-risc is dead and burrowed by HP (we as customers was told to migrate to itanium or try that cracy linux thing, allmost everyone dropped HP for that cracy linux thing )
saying that since pa-risc is a risc arch then everything related to using risc is the same as talking about HPUX is as near as saying that if it has four wheels it has to be a pontiac, CISC and RISC are to ways of designing cpus (actually itanium is none of them but that another discussion), all high end computer plattform was based on RISC in the past. since Complex Intruction Set Computer would always be slower and less predictable than Reduced Instruction Set Computers, Well see how slow X86 (CISC) got MIPS/PPC/PA-RISC/SPARC is all RISC, and PA-RISC was probably the least successfull of them
But as always, If anyone gets to dump gameos, please _PLEASE_ leak a dump, I have a little too much time 6 weeks from next week