Re: re[2]: Clusterwide pids

[Bruce Walker <bruce@kahuna.cag.cpqcorp.net>]

Greg,
> 
> I did not mean to imply simultaneously.
> 
> I merely meant: could the CPID module be written generically enough that it could interface to the multiple membership algorithms already in use. (i.e. I'm sure FailSafe, Kimberlite, SteelEye, Beowulf, PVM, SSI for Linux Clusters, etc. each have their own membership algorithm.)

I'd be surprised if was hard to have each of the cluster solutions move to a common
node number mechanism (whether pids had it encoded or not).  A key goal of our 
Cluster Infrastructure project (can be found via www.opensource.compaq.com) is to
provide a common membership (and thus node numbering) mechanism for any and all clusters.
I promised earlier that I would  share the proposed membership interfaces, which I will
do soon.

> 
> I was not trying to imply that one node could be simultaneously a member of a PVM cluster and a SSI for Linux Cluster.  That seems way beyond the current scope of things.  I guess it is conceivable that with enough common infrastructure it could be done, but I would not consider that a design goal.

While PVM and SSI may not be very likely, overlapping clusters is quite tantalizing.
Steven Tweedie has proposed hierarhical clusters, which I believe VMS clustering has.
I think that has definite merit and going beyond that, allowing nodes to be members
of more than one cluster at once has some attraction.
> 
> Greg Freemyer
> Internet Engineer
> Deployment and Integration Specialist
> The Norcross Group
> www.NorcrossGroup.com
> 
> 
> Linux-cluster: generic cluster infrastructure for Linux
> Archive:       http://mail.nl.linux.org/linux-cluster/

bruce walker
Open SSI Cluster Architect
Compaq Computers


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