The HA-OSCAR (high availability) is moving in the direction of having multiple head nodes running duplicate services - but don't expect a public release until fall 03 - toward supercomputer conference time.

stephen



Jeremy Enos wrote:
No preferred way... in fact, no good way at all yet. The head node is the only supported access point to an OSCAR cluster as it stands right now. You should be able to use some compute node as an access point to the cluster crudely, but you'll likely run into issues:

* Users and their passwords are synchronized from the head node, thus the head node is the only place persistent changes can be made.
* By default, compute nodes are pretty stripped down. Users may find that they're missing several of their favorite tools.
* Batch system submission: Only the OSCAR head node is configured by default to allow submission to the batch system (PBS).


Those are just off the top of my head; there may be other issues.

In a future version, OSCAR will have a configuration which will allow selection of specific nodes to be configured as access points, but it's not there yet.
Hope that helps-


Jeremy


At 02:22 PM 6/10/2003 -0400, [EMAIL PROTECTED] wrote:


Thanks for the quick replies; that helps alot!

On a semi-related note: If one has multiple head/login nodes, is
there a preferred way of approaching that OSCAR install (independent
of the SCSI-vs-IDE issue) to avoid any potential conflicts?

Thanks again,

Jerry


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