mpich in testing: mpirun hangs on single processor

[Markus Uhlmann <uhlmann@kuaero.kyoto-u.ac.jp>]

hello,

i am running a 2.4.20 kernel on a single-processor pentium 4 machine. i
installed mpich (output from dpkg -l):

ii  libmpich1.0    1.2.5.2-1      mpich runtime shared library
ii  mpich          1.2.5.2-1      MPI parallel computing system implementation
ii  mpich-common   1.2.5.2-1      Manpages and other common files for mpich

and have the required rsh packages:

ii  rsh-client     0.17-10        rsh clients.
ii  rsh-server     0.17-10        rsh servers.

'tstmachines' does not report any errors:

> /usr/lib/mpich/sbin/tstmachines -v
Trying true on localhost ...
Trying ls on localhost ...
Trying user program on localhost ...

my entry in the list of machines is:

> more /etc/mpich/machines.LINUX 
localhost

(~/.rhosts is set accordingly). however, none of the testprograms
below '/usr/share/doc/mpich/examples' (or any other 'hello world')
works when run as follows:

/usr/share/doc/mpich/examples/pi> mpirun -v -np 1 ./pi3
running /usr/share/doc/mpich/examples/pi/./pi3 on 1 LINUX ch_p4 processors
Created /home/uhlmann/PI13135

...and there it hangs. any hints?

thanks,

markus