[Beowulf] Problem with environment variable

[Giuseppina Venezia]

Hello,

I'am using PVM with two nodes: a master node with Fedora Core 8 called
"pippo" and a slave node with ubuntu 8.10 called "pluto".

I've installed PVM on both "pippo" and "pluto", and set those
environment variables:

PVM_ROOT, PVM_ARCH, PVM_RSH and PVM_TMP.

in .bashrc and /etc/profile

Tha problem in that when I add another host from the master node I got
the following error:

pvm> add pluto
add pluto
0 successful
                    HOST     DTID
                   pluto Can't start pvmd

Auto-Diagnosing Failed Hosts...
pluto...
Verifying Local Path to "rsh"...
Rsh found in /usr/bin/rsh - O.K.
Testing Rsh/Rhosts Access to Host "pluto"...
Rsh/Rhosts Access is O.K.
Checking O.S. Type (Unix test) on Host "pluto"...
Host pluto is Unix-based.
Checking $PVM_ROOT on Host "pluto"...

The value of the $PVM_ROOT environment
variable on pluto is invalid ("").
Use the absolute path to the pvm3/ directory.

pvm>

However, if I try echo $PVM_ROOT on slave node ("pluto") I got

/usr/lib/pvm3

Could you help me?
Thank you in advance