How to build a cluter based on 2 PCs?

[Xiaoming Hu <xhu@ncsu.edu>]

Hey

I have two laptops with ubuntu system. I got NFS working also ssh 
without password prompt between the two laptops. I also installed MPICH.
And my simple parallel code is compiled successfully. But after I use 
mpirun -np n xxx to submit my job. it doesn't work.

what could be the problem?

I guess the problem may be the NFS exports setting on my head node(one 
of my laptop). Even though I can mount the shared folder to my internal 
node. I don't have write permission from my internal node. But in my 
exports I did set rw permission.  So I don't know what is wrong



Have a nice day

Xiaoming