As has frequently been commented upon at one time or another, the
shared memory backing file can be quite huge. There used to be a param
for controlling this size, but I can't find it in 1.3 - or at least,
the name or method for controlling file size has morphed into
something I don't recognize.
Can someone more familiar with that subsystem point me to one or more
params that will allow us to control the size of that file? It is
swamping our systems and causing OMPI to segfault.