environment/lib/python2.7/site-packages/IPython/parallel/apps/launcher.py
def start(self, n):
        """Start n engines by profile or profile_dir."""
        dlist = []
        for i in range(n):
            if i > 0:
                time.sleep(self.delay)
            el = self.launcher_class(work_dir=self.work_dir, config=self.config, log=self.log,
                                    profile_dir=self.profile_dir, cluster_id=self.cluster_id,
            )

            # Copy the engine args over to each engine launcher.
            el.engine_cmd = copy.deepcopy(self.engine_cmd)
            el.engine_args = copy.deepcopy(self.engine_args)
            el.on_stop(self._notice_engine_stopped)
            d = el.start()
            self.launchers[i] = el
            dlist.append(d)
        self.notify_start(dlist)
        return dlist
def start(self, n):
        """Start n engines by profile or profile_dir."""
        dlist = []
        for i in range(n):
            if i > 0:
                time.sleep(self.delay)
            el = self.launcher_class(work_dir=self.work_dir, config=self.config, log=self.log,
                                    profile_dir=self.profile_dir, cluster_id=self.cluster_id,
            )

            # Copy the engine args over to each engine launcher.
            el.engine_cmd = copy.deepcopy(self.engine_cmd)
            el.engine_args = copy.deepcopy(self.engine_args)
            el.on_stop(self._notice_engine_stopped)
            d = el.start()
            self.launchers[i] = el
            dlist.append(d)
        self.notify_start(dlist)
        return dlist
Start n engines by profile or profile_dir.