Please cc mpich-discuss at mcs.anl.gov on your emails. On 02/01/2011 01:02 AM, Ranjit Thapa wrote: > 3. Are *both* nodes listed in the /etc/hosts file on *each* node? > > Ans: Yes (10.1.1.0 ranjit) > 10.1.1.1 node01 Is the /etc/hosts file the same on both nodes? -- Pavan -- Pavan Balaji http://www.mcs.anl.gov/~balaji