[Dunder-users] Re: dunder: rolling upgrade

[Per Lundqvist]

All compute nodes on dunder have now been updated

/Per

On Tue, 20 Nov 2007, Per Lundqvist wrote:

> 
> The compute nodes on Dunder will be upgraded during this week, beginning 
> from today. This will be a rolling upgrade, without stopping the batch 
> queuing system or any other vital services on dunder (similar to previous 
> 2 upgrades).
> 
> The following will be upgraded on n1-n50:
> 
> 1. New kernel, 2.6.9-55.0.9.EL_lustre.1.6.3smp
> 2. Security updates to other software (latest CentOS 4)
> 3. New lustre client: 1.4.11.1 -> 1.6.3 
> 4. Upgrade of infiniband stack OFED 1.1 -> OFED 1.2.5.1
> 5. Upgrade of Scali MPI 
> 
> This has been thoroughly tested without any issues, but contact 
> smhi-support at nsc.liu.se if you encounter anything after the upgrade that 
> does not work properly.
> 
> Update Procedure:
> 
> 1. _All_ compute nodes will be marked unavailable in the batch queuing 
>    system (prevents new jobs from starting on the nodes and does not 
>    affect already running jobs)
> 2. For all unavailable compute nodes, and if no job is running on node, 
>    and not updated: update 
> 3. Mark node available again when update finished
> 
> The login node and the system node will be updated later.
> 
> /Per
> 
> 

-- 
Per Lundqvist

National Supercomputer Centre
Linköping University, Sweden

http://www.nsc.liu.se