There are several kind of communications
- ssh from mpirun to compute nodes, and also between compute nodes
(assuming you use a machine file and no supported batch manager) to spawn
orted daemons
- oob/tcp connections between orted
- btl/tcp connections between MPI tasks
You can restrict the port
I cloned from github latest version of Open MPI on grid5000.
128 nodes was reserved from nancy site. During execution of my mpi code I
got error message below:
A process or daemon was unable to complete a TCP connection
to another process:
Local host:graphene-17
Remote host:
