After allocating a hypercube, the next step is usually to load one or more processes onto the nodes and run them.
Every process executing on a node of a hypercube has a pid .
Each RX node can execute only one process at a time, and its NX pid is 0. The load command loads a program on the specified nodes of a hypercube. Therefore, issuing a killcube before each relcube is a good practice. The following example shows how to use some of the system commands mentioned above. We allocate a hypercube of four nodes and load hello on all four nodes.