we have installed open mpi 1.2 using synaptic package manager in 2 machines
running on ubuntu 8.10 and ubuntu 8.04.the hello.c program runs
correctly,but connectivity_c.c program included in the openmpi tarball
example fails when we it tries to communicate between both computers.also on
the 8.04 version we get an error of "unable to find any HCA's will use
another transport instead".on the 8.10 machine we get an error "unable to
find executable:a.out host:ip of node".
however the programs run without errors when we specify only localhost in
hostfile.we have set up PATH and LD_LIBRARY_PATH,but still get same errors.