[GE users] Getting mvapich tight integration working

Daryl Herzmann akrherz at iastate.edu
Tue Aug 1 14:38:21 BST 2006


Greetings,

Thanks for your help!

On Tue, 1 Aug 2006, Christian.Reissmann at Sun.COM wrote:

> It seems that the host "compute-0-19.local" can't resolve the ip address 
> of host "compute-0-22.local". Can you please check the ip resolving on 
> both hosts, so that each host can resolve the ip adressess of each 
> other.

[akrherz at compute-0-19 ~]$ /opt/gridengine/utilbin/lx26-amd64/gethostbyaddr 
-all 192.168.0.232
error resolving ip "192.168.0.232": can't resolve ip address (h_errno = 
HOST_NOT_FOUND)


[akrherz at compute-0-22 ~]$ /opt/gridengine/utilbin/lx26-amd64/gethostbyaddr 
-all 192.168.0.235
error resolving ip "192.168.0.235": can't resolve ip address (h_errno = 
HOST_NOT_FOUND)


So I tried the /opt/gridengine/default/common/host_aliases file again and 
restarted sgemaster and sgeexecd everywhere

[akrherz at compute-0-19 common]$ grep  192.168.0.232 host_aliases
compute-0-22.local 192.168.0.232
compute-0-22 192.168.0.232
c0-22 192.168.0.232

[akrherz at compute-0-19 common]$ 
/opt/gridengine/utilbin/lx26-amd64/gethostbyaddr -all 192.168.0.232
error resolving ip "192.168.0.232": can't resolve ip address (h_errno = 
HOST_NOT_FOUND)

So then I tried adding all of the compute nodes to /etc/hosts on all the 
cluster nodes and it will resolve

[root at compute-0-19 ~]# /opt/gridengine/utilbin/lx26-amd64/gethostbyaddr 
-all 192.168.0.232
Hostname: compute-0-22.local
SGE name: compute-0-22.local
Aliases:  compute-0-22
Host Address(es): 192.168.0.232

So I tried my test code again and got fewer errors, but still not working.

http://mesonet.agron.iastate.edu/pickup/mvapich_debug2.txt.gz

The firewall is off on the cluster nodes.

Ideas?  thanks!
   daryl

-- 
/**
  * Daryl Herzmann, RHCE
  * Program Assistant -- Iowa Environmental Mesonet
  * http://mesonet.agron.iastate.edu
  */

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