Traceback (most recent call last):

 "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/zmq/eventloop/zmqstream.py", line 346, in _run_callback
callback(*args, **kwargs)

 "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/contextlib.py", line 34, in __exit__
self.gen.throw(type, value, traceback)

 "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/zmq/eventloop/stack_context.py", line 97, in NullContext
yield

 "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/zmq/eventloop/zmqstream.py", line 346, in _run_callback
callback(*args, **kwargs)

 "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/zmq/eventloop/stack_context.py", line 133, in wrapped
callback(*args, **kwargs)

 "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/IPython/parallel/controller/hub.py", line 462, in dispatch_monitor_traffic
handler(idents, msg)

 "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/IPython/parallel/controller/hub.py", line 655, in save_task_request
self.db.add_record(msg_id, record)

 "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/IPython/parallel/controller/mongodb.py", line 46, in add_record
rec = self._binary_buffers(rec)

 "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/IPython/parallel/controller/mongodb.py", line 41, in _binary_buffers
rec[key] = map(Binary, rec[key])TypeError: argument 2 to map() must support iteration
Traceback (most recent call last):


 "src/gevent/greenlet.py", line 716, in gevent._greenlet.Greenlet.run


 "mars/actors/pool/gevent_pool.pyx", line 88, in mars.actors.pool.gevent_pool.ActorExecutionContext.fire_run


 "mars/actors/pool/gevent_pool.pyx", line 91, in mars.actors.pool.gevent_pool.ActorExecutionContext.fire_run


 "mars/actors/pool/gevent_pool.pyx", line 102, in mars.actors.pool.gevent_pool.ActorExecutionContext.fire_run


 "mars/actors/pool/gevent_pool.pyx", line 96, in mars.actors.pool.gevent_pool.ActorExecutionContext.fire_run


 "mars/actors/core.pyx", line 108, in mars.actors.core.FunctionActor.on_receive


 "mars/actors/core.pyx", line 110, in mars.actors.core.FunctionActor.on_receive


 "/Users/wenjun.swj/Code/mars/mars/scheduler/graph.py", line 421, in prepare_graph

for n in tensor_to_tiled[tk][-1].chunks:
IndexError: list index out of range
