On Sat, Oct 13, 2012 at 4:07 PM, George Mathew <span dir="ltr"><<a href="mailto:gmnnus@gmail.com" target="_blank">gmnnus@gmail.com</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="gmail_quote"><div>The following command works fine: </div></div>mpiexec -f machinefile -n 12 hostname</blockquote><div><br></div><div>Hostname does not communicate at all. Can you run a real MPI program, such as cpi.c that is included in most source MPI distributions? The first call to MPI_Bcast() is raising an error, which strongly indicates that the MPI was misconfigured.</div>
<div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><br></div><div>It displays the hostname from the 4 different machines that I have in the machinefile. The MPI installation was done from the same tar file on the 4 hosts running identical versions of linux.</div>
</blockquote></div><br><div>Environment variables could still be different, for example.</div>