Hello all,

I am a new PVM user. My Linux Cluster is a Redhat Cluster with one server and 23 nodes. Recently, I rebooted the system. Since that time, one of my users is able to ssh into the server and start pvm, but he cannot add any nodes to his vm. When he tries, he gets this sort of error:

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

Auto-Diagnosing Failed Hosts...
Verifying Local Path to "rsh"...
Rsh found in /usr/bin/rsh - O.K.
Testing Rsh/Rhosts Access to Host ""...

Rsh/Rhosts Access FAILED - "Permission denied."
Make sure host is up and connected to
a network and check its DNS / IP address.
Also verify that bluesrv is allowed
rsh access on
Add this line to the $HOME/.rhosts on
bluesrv jsmith

And if he tries the conf command he gets:

[jsmith@bluesrv jsmith]$ pvm pvmhosts
pvm> conf
1 host, 1 data format
bluesrv 40000 LINUXI386 1000 0x00408841

If I ssh into the root account, however, everything works fine. And one of our other users is also having no problem at all (normal operation) when he ssh's into the server from his remote machine.

Can anyone provide some hints as to what to check on here and as to what might have changed? I have the idea that since this works for some users and not others that the nodes are configured properly and that everything is OK with the network setup, etc. But I have no idea where to begin.

Can anyone help?