'Configure scratch space on all StarCluster nodes'

def _setup_scratch(self, nodes=None, users=None):

    users = (users or [self._user])
    log.info(('Configuring    scratch    space    for    user(s):    %s' % ',    '.join(users)), extra=dict(__textwrap__=True))
    nodes = (nodes or self._nodes)
    for node in nodes:
        self.pool.simple_job(self._setup_scratch_on_node, (node, users), jobid=node.alias)
    self.pool.wait(numtasks=len(nodes))
