Re: UML and HA and clusterwide pids

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

Annon wrote:
> 
> 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.

The SSI project that was recently launched 
(you can find it from www.opensource.compaq.com) has
unique node numbers, 32-bit pids on 32 bit hardware and
clusterwide unique pids (the technology base the
SSI project is seeded with has had clusterwide unique
pids and process migration for over 15 years and a 
single clusterwide root filesystem for over 20 years
(Locus technology, TCF, TNC, and NonStop Clusters for Unixware).

A first developer release, including:
  - cluster membership and internode communication from
	the Cluster Infrastructure project
  - capability for clusters up to 64 nodes
  - clusterwide root filesystem
  - clusterwide process ids and access to all
	processes from all nodes at all times
  - full SSI remote exec, inheriting pid, open files,
	open sockets, open pipes, open devices, etc.
  - process migration, if we finish the port in time
  - clusterwide device naming and access
  - clusterwide message queue naming and access
  - clusterwide fifo naming and access
  - single init for the cluster, with support to have
	the cluster at different run levels
  - no single points of failure for the cluster
  - application monitoring and failover
should be out this month.

Please come and join the project (at least via the email 
list for now).

bruce.walker@compaq.com
Open SSI Cluster architect
Compaq.



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


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