pyorient does not work with multi-master cluster

[xciter]

I have a multi-master cluster of OrientDB 2.2.37, when I am trying to connect using pyorient, machine got out of memory on db_open. Also, I have not found any way to specify list of nodes of cluster.
So I have 2 questions:

1. How can I connect to a cluster of nodes?
2. Does oyorient has any kind of load balancing for cluster?