# Parallel processing¶

When dealing with large tournaments on a multi core machine it is possible to run the tournament in parallel although this is not currently supported on Windows. Using processes=0 will simply use all available cores:

>>> import axelrod as axl
>>> players = [s() for s in axl.basic_strategies]
>>> tournament = axl.Tournament(players, turns=4, repetitions=2)
>>> results = tournament.play(processes=0)