Swap over the network?

John Berninger John_Berninger at ncsu.edu
Mon Oct 1 10:20:10 EDT 2001


In the /etc/beowulf/fstab file as created by a standard install, the
swap entry is commented out; the only two active entries are for a
RAMDISK / and an NFS-mount of /home from the master node.  This would
seem to suggest that you can either create a RAMDISK swap or simply not
create swap at all on the nodes; which also makes sense with what I know
of diskless nodes with floppy boot disks.

On Mon, 01 Oct 2001, Cabaniols, Sebastien wrote:

> Hi beowulf ml !
> 
> Do you know if it is currently possible to have diskless nodes
> having their swap over the network ?
> 
> The goal is not to use the swap but to remove the disks from the 
> computationnal nodes to have a better MTBF. I mean we don't 
> want to swap at any time during our computation but we don't
>  want to loose a job if linux starts swapping.
> 
> How can I do swap with the network ?
> 
> Can NFS do this ?
> Are there better solutions ?
> 
> I have searched through the beowulf archive but I have not found 
> anything except old posts (1998)
> 
> Thanks for any help
> 
> ----------------------------------------------------------------------------
> --
> Sebastien CABANIOLS
> COMPAQ France 
> HPTC Engineer
> CustomSystems & Solutions  Annecy  
> High Performance Technical Computing 
> Office No.  +33 (0)4 50 09 44 10
> Fax No.  +33 (0)4 50 64 01 39 
> Email.   sebastien.cabaniols at compaq.com 
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Thank you,
John Berninger

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