[HECnet] PDP-11 OSes in SIMH

[Clem Cole]

The parent code base (Locus TNC) been in BSD and Mach before. As I mentioned it was in HP-UX and the Intel SSD Paragon is based on the same code.   Frank Mayhar was at one time working in a FreeBSD port.    Tandem/HP shipped the Unixware version and post merger Bruce started to work on the Linux port -  hence the OpenSSI project.

Assume a Cluster File System for uniform name space (NFS will work to start with but is not good enough in the long run), a membership service (aka CMS) and a cluster wide internode communications service (ICS), the process code can be moved in about 2-3 months of work.   Basically, you have to perform heavy  surgery on the process code and add the vproc layer (think vfs layer that added to support multiple FS).   Once you have a proper hooks, then the process code is pretty much the same - modulo differences in memory systems.   

At Locus we had it all in 14 "packages" [with two - CMS & ICS - being required].    The others were ala cart.    Intel took the process technology, DEC primarily took the filing stuff, and  Tandem took  everything.       

Clem


On Tue, Jan 8, 2013 at 10:49 AM, Brian Hechinger <wonko at 4amlunch.net> wrote:
On 1/6/2013 8:04 PM, Clem Cole wrote:
well the cluster stuff that TruCluster is based is already FOSS.   checkout OpenSSI.org.      sadly that tree is dead/or nearly so.   Bruce stopped working on it and never was able to get the vproc layer into the Linux upstream sources.   which is a real shame



Oh, nice!

Maybe we should get that somewhere else. Like NetBSD or rolled into the Illumos stuff. :)

-brian