How to run MPI Programs after setting up the cluster ?

[Rahul8590]

I am doing my research on cluster computing and my search for idle cluster environment ended when i found pelicanHPC.

Well i booted the image of the disk which in turn made it the server node
Then i booted the other systems (2 PC) and the client nodes were detected.
The client nodes also booted pelicanHPC (that was a gr8 experience) .
Now , i would like to run MPI programs in the cluster environment , i don't know how to proceed ,
i would be glad if you guys can help me out.

[sudeepk]

After writing a MPI programs you can compile them by using the following commands

For c
mpicc hello.c –o hello
For c++
mpiCC hello.cc –o hello
For fortran
mpiff hello.f –o hello

For running a the MPI programs

mpirun C hello
The C option means “launch one copy of hello on
every CPU that was listed in the boot schema.
mpirun N hello
N means “launch one copy of hello on every node in
the LAM universe.” Hence, N disregards the CPU count.
This can be useful for multithreaded
MPI program
mpirun –np 4 hello
This runs 4 copies of hello. LAM will “schedule” how
many copies of hello will be run in a roundrobin fashion
on each node by how many CPUs were listed in the boot
schema file.

I have done a lame documentation regarding the building of a cluster and running MPI programes. You can donwload it from http://sudeepk.info/projects/clustering.pdf 

[Michael Creel]

Another option would be to try ParallelKnoppix, which is similar to PelicanHPC, but it also has a number of examples. The last version of PK is available at the PelicanHPC download page.