MPICH2 cluster user password problem

[meteo666]

Hi, I build a 8-node mpich2 cluster using the tutorial shown below
https://help.ubuntu.com/community/MpichCluster

Here is my problem:

when I execute the command shown below

mpdboot -n 8It returns an output shown below:

asdf@isik2's password: asdf@isik3's password: asdf@isik4's password: asdf@isik5's password: which is not preferable :)

I will be very happy if you can say how can I solve it.
Thanks...

[meteo666]

I think I got the solution...
Login as asdf when computer boots
but it will have to wait tomorrow :)