Re: UML and HA

[Amnon Shiloh <amnons@cs.huji.ac.il>]

Alan Robertson <alanr@unix.sh> Wrote:

> > I don't know if it helps with process migration, but you might want to consider the below:
> > 
> > In Compaq's TruClusters they require each process to have a unique pid across the cluster.
> > 
> > They accomplish this by using a 64-bit pid.  Then they have each node assigned a unique node #.
> 
> MOSIX does something similar.

MOSIX indeed has a unique node #, but still uses only 16-bit PIDs
in order to avoid any changes to the user-level interface.
As a result, PIDs are NOT unique across the cluster.

Amnon Shiloh -- the HUJI MOSIX group.

Linux-cluster: generic cluster infrastructure for Linux
Archive:       http://mail.nl.linux.org/linux-cluster/