Keep track of the connected procs in vader_add_procs().
Otherwise, the same rank will reconnect the same shmem
segment (rank 0+...) multiple times instead of the next
one as intended.
Signed-off-by: Austen Lauria <awlauria@us.ibm.com>
(cherry picked from commit f69c8d6819dcc14f471cea90b50dc8ca98de12d4)
f7979fbc82