Cannot start MPI job from host system

Hi All,

I am trying to run an application from the host machine on a coprocessor. When I execute the test command

mpirun -n 1 -host mic0 hostname

I get the following error message

[proxy:0:0@machine-mic0.domain] HYDU_sock_connect (./utils/sock/sock.c:241): unable to connect from "machine-mic0.domain" to "127.0.0.1" (Connection refused)
[proxy:0:0@machine-mic0.domain] main (./pm/pmiserv/pmip.c:353): unable to connect to server 127.0.0.1 at port 42661 (check for firewalls!)
 

When I ssh into the coprocessor and run the same command, I get the expected output.

I have checked that environmnet variable I_MPI_MIC is set to 'enable', I have disabled the host firewall, and since /opt/intel is not available over NFS, I have copied the necessary libraries to the coprocessor.  I'm not sure where to proceed from here.

Best Regards,

Michael