Re: Clusterwide pids

[Lars Marowsky-Bree <lmb@suse.de>]

On 2001-07-10T19:55:16,
   Greg Freemyer <freemyer@NorcrossGroup.com> said:

> I guess that I am such a cluster convert, that I simply accept that full SSI
> type clusters are the future.  For IPC to ever have a SSI view of the
> cluster will require CPIDs, so I take it as a given that eventually, we will
> have to have a CPID solution.  My hope is that we have just one, not one per
> cluster technology.

A CPID and SSI-type clustering certainly are desireable for quite a few
clustering applications.

However, not for all of them. Most notably, clustering nodes which are
geographically distributed - it makes sense to treat them as less-tightly
coupled.

The common cluster infrastructure shouldn't enforce this.

However, a CPID component certainly makes sense in the framework, and as long
as everybody sticks to the APIs suggested, you can have several...

> I think any core/common cluster infrastructure modules should support at
> least 100 nodes, and hopefully a lot more than that.

The model itself should be totally agnostic and scale in any direction. I
think this is possible for quite a few aspects.

The actual implementations might have different limits.

Sincerely,
    Lars Marowsky-Brée <lmb@suse.de>

-- 
Perfection is our goal, excellence will be tolerated. -- J. Yahl


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