Multi-cores and standalones

[Bryan McCormick]

Does anyone know how or if multiple standalones use memory space or 
cores? I realize they are not multi-threaded or multi-core aware. But 
let's say you had five or six standalones running. Are they all in the 
same space, using the same core? Or does the system dispatch and 
allocate them?

I am asking as I have a large computation project where multiple 
standalones make sense just from an i/o perspective. I am curious about 
how efficient this really is in terms of how they behave in a 
multi-core/large memory space.