[Wien] dstart_mpi error

[karima Physique]

*Thank you dr Gavin Abo*
*I checked the etc/hosts file and it is ok*
*but why lapw1_mpi works fine and in all the nodes while dstart_mi and
lapw0_mpi do not work on the nodes*

Le jeu. 19 juil. 2018 à 04:23, Gavin Abo <gsabo at crimson.ua.edu> a écrit :

> As the error message says, one possible cause is the connection being
> blocked by a firewall.
>
> Another possible cause is a ssh passwordless access problem:
>
>
> https://stackoverflow.com/questions/19565795/unable-to-execute-mpich2-on-multiple-machines-on-ubuntu-12-04-hydu-sock-connect
>
> Yet, another possible cause is a problem resolving the DNS hostname:
> https://forums.suse.com/archive/index.php/t-6057.html
>
> https://www.slothparadise.com/running-mpi-common-mpi-troubleshooting-problems/
>
> Since /etc/hosts usually cannot be edited by a user, the cluster
> administrator would have to fix the hosts file if that happens to be the
> source of the problem.
> On 7/18/2018 6:07 PM, karima Physique wrote:
>
> Dear wien2k users:
>
> Using the folowing machines files :
> lapw0:master:12
> dstart:master:12
> 1:master:12
> 1:node1:12
> 1:node2:12
> ......
> the calculation works very well, but using the following machines file:
> lapw0:master:12  node1:12  node2:12
> dstart:master:12  node1:12  node2:12
> 1:master:12
> 1:node1:12
> 1:node2:12
> .......
> I got the following error:
>
> unable to get host adress calcul.local for (1)
> unable to  connect to server  calcul.local at port 44295 (chek for
> firewalls!)
> we note that  calcul.local is the host to connect to w2web.
> I ask you any suggestions to solve this problem
>
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