I have a problem with MPI_Comm_create,
My server application has 2 processes per node, 1 listener
and 1 worker.
Each listener monitors a specified port for incoming TCP
connections with the goal that on receipt of a request it will distribute it
over the workers in a
SIMD fashion.
This all works fine unless MPI_Comm_create is called on the
listener process. Then after the
call the incoming socket cannot be reached by the external client processes.
The client reports “”Could’t open socket”. No other error is apparent. I
have tried using a variety of
different sockets but to no effect.
I use OpenMPI 1.4.1 on FD10 with vanilla TCP. The install is totally standard
with no
changes.
Is this a known issue?
An help appreciated.
