[Wien] configuring parallel options using ssh

[Peter Blaha]

As stated in the manual, you need a "common" filesystem on all nodes 
which you want to use in k-parallel mode.

Typically, this involves NFS (or some other "cluster-filesystem", ...).

The key is, that the mount-point must be the same on all nodes, i.e. the 
full path to your directory/files must be the same.

Typically one should reconfigure his Linux boxes, because by default all 
user-data are in /home and of course all nodes have then their own /home 
directory and one cannot use:  mount node1:/home /home, because this 
would overwrite the /home on the second node.

You could create a directory "/node1" on node1 (and /node2 on the next 
node, ...) and mount /node1 on all other machines under the name /node1.

The directory /node1/name  should then be also your home-directory on 
all these nodes.

Every computer-center / cluster is setup in this way. If you are your 
own system manager, you have to do it yourself.

On 09/17/2018 12:54 PM, Luc Fruchter wrote:
> There is indeed too few information from me.
> 
> I try to configure the k-paralellization over several PCs connected by a 
> regular (slow) network. I use w2web, so that commands are transparent to 
> me.
> 
> Wien2k is installed on all machines, and paths are the same on all 
> machines. SSH works without password on all machines.
> 
> Is NFS mandatory with this configuration ?
> 
> If so, to which directory should the mounted directory point to ? What 
> should be its name, and where should it stand on the calling machine ?
> 
> Thanks
> 
> PS : I hope this message threads correctly: I was told by the archive 
> manager to replace the addressee from the "reply to' button by Wien's 
> address (?).
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-- 

                                       P.Blaha
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Peter BLAHA, Inst.f. Materials Chemistry, TU Vienna, A-1060 Vienna
Phone: +43-1-58801-165300             FAX: +43-1-58801-165982
Email: blaha at theochem.tuwien.ac.at    WIEN2k: http://www.wien2k.at
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