Since I don't have mpich installed right now, I could only say
the MPI libs fail at it, because I remember having had to modify
/etc/hosts.equiv, the rsh method is a really slow and irritating method.
If you can use their server based method to run, I think it's better.
It did have some authentication tweaks as I remember but, but
you can work it out from the manual. It's a lot better than PVM anyway!
Did you try MPICH's trace facility? I recall something like
mpicc $(OBJS) $(CFLAGS) $(LIBS) -o $(EXEC) -mpitrace
-- ++++-+++-+++-++-++-++--+---+----+----- --- -- - - + Eray "eXa" Ozkural . . . . . . + CS, Bilkent University, Ankara ^ . o . . | mail: email@example.com . ^ . .
begin:vcard n:Ozkural;Eray tel;home:4276846 x-mozilla-html:TRUE org:Bilkent University;CS version:2.1 email;internet:firstname.lastname@example.org title:Graduate Student adr;quoted-printable:;;Simsek Sok. No:6/2=0D=0AMeltem Apt. Asagi Ayranci ;Ankara;;06540;Turkey x-mozilla-cpt:;10112 fn:Eray Ozkural end:vcard