I'vecouple of more questions to ask you. <br><br>Below are the steps mentioned in MVAPICH user guide for <br>running MPI application with RDMA CM support.<br><br><i>• Setup the RDMA CM device: RDMA CM device needs to be <br>
setup, configured with an IP address and connected to the network.</i><br><br>I have two machines (n0 and n1)connected with one ethernet interface <br>and 2 IB interfaces in each. And /etc/hosts on both machines is like <br>
below.<br><br><a href="http://192.168.3.1">192.168.3.1</a> n0<br><a href="http://192.168.3.2">192.168.3.2</a> n1<br><a href="http://172.131.15.1">172.131.15.1</a> n0_ib0<br><a href="http://172.131.15.2">172.131.15.2</a> n0_ib1<br>
<a href="http://172.131.15.3">172.131.15.3</a> n1_ib0<br><a href="http://172.131.15.4">172.131.15.4</a> n1_ib0<br><br>Now If I want to run an MPI job on both of the nodes what should I<br>mention in the <i>'hostfile'</i> given to MPI ("n0, n1" or "n0_ib0, n1_ib0 ... " ) ?<br>
<br><i>• Setup the Local Address File: Create the file (/etc/mv2.conf) with the <br>local IP address to be used by RDMA CM.<br>$ echo <a href="http://10.1.1.1">10.1.1.1</a> >> /etc/mv2.conf</i><br><br>Why is this file (/etc/mv2.conf) required ? Is it required to be present on <br>
all nodes?<br><br>-Mahesh