Run and Compile LAM programs

I use this instructions to run LAM programs in a Beowulf cluster

Requirements:

A file which holds the name of the boxes in the cluster (i.e /mnt/lamhosts)
A sharing directory the cluster (i.e /mnt/lam)
A LAM/MPI parallel computing program (i.e. hello.c)
Need to log in as an authorized user
And of course a working Beowulf cluster

1. Copy the file lamhosts, and the program hello.c into /mnt/lamhosts
2. cd /mnt/lamhosts
3. Turn on LAM: lamboot -v lamhosts
4. Compile prog: mpicc -o hello hello.c
5. Run: mpirun n0-x hello
(x: number of machines – 1)
6. Once you finish, turn Lam off: lamhalt