If you are a HPC (High Performance Computing) developer you know how hard it can get to test your code on the real physical cluster. You may need to reserve your slot on the common university/company HPC system (you got to be really lucky if your professor/manager has enough funds to have the full cluster for yourself, and in case you have this page would be still interesting to you... read on to find out). What if you are able to simulate the whole cluster on your... say a laptop! Morever this way you don't have to upload your code to HPC cluster to just to perform some simple MPI tests.
So step no. 1, go get and grab the copy of OpenSolaris 2008.05.
Step no.2, you may choose to format your laptop/desktop with it or why not try it on VirtualBox so that you don't have to disturb your current physical installation. I would recommend the VirtualBox way, as nothing has to be disturbed on your existing setup.
So whichever way that you have decided to go lets proceed with OpenSolaris installation. After you have completed the installation of OpenSolaris by hook and crook ;) lets start with real fun... watch out for Part - II :)