That is going to depend on what they do. Sometimes it would work. For example, you could construct a cell array of function handles, open a pool, use the facility to add the source files to the pool, then enter an spmd block. The spmd bock content would look like
feval(HandlesCell{labindex})
Provided that your pool size was as large as the number of functions to execute.
You might also want to try parfeval for this use.
