[Beowulf] diskless cluster nfs

[Bernd Schubert]

Hi Joshua,

>
> PS: nfs mount options: async,rsize=8192,wsize=8192,hard
>        file sizes: approx 2MB

better switch to tcp, its always suggested on the linux NFS mailinglist by the 
kernel maintainers. So additionally give the mount option tcp.

Do you export async or sync (/etc/exports)? Its not importing for reading, but 
exporting async may give much better write throughput. On the other hand it 
might cause data loss on a server crash, but if one needs speed its often 
neccessary.

Hope it helps,
 Bernd


PS: We are using a pretty nice diskless environment, probably with a 
completely different approach than you are doing ;) Just replace ClusterNFS 
by unfs3, I will update this howto over X-mas.

-- 
Bernd Schubert
Physikalisch Chemisches Institut / Theoretische Chemie
Universität Heidelberg
INF 229
69120 Heidelberg
e-mail: bernd.schubert at pci.uni-heidelberg.de