Is it possible for the spectrum() method to use all CPU cores?

edit

Thanks! I was trying to use Python's multiprocessing library before, I'll try using the decorator then.

I'm experimenting with the @parallel decorator but the spectrum() method doesn't seem to accept more than one input at a time.

vertex = 7
parameters = str(vertex) + " -c " + str(vertex) + ":" + str(vertex)
graphs_nauty = list(graphs.nauty_geng(parameters))
@parallel
def laplacian_spectrum(graph):
    return graph.spectrum(laplacian = True)
spectrum_all = laplacian_spectrum(graphs_nauty)
for i in spectrum_all:
    print(i)

The way you did works for me, if i replace @parallel with @parallel(ncpus=8)

It isn't working for me at all. Which Sage version are you using?