[openstack-hpc] is the HPC , discussion mailing list active

Hello list members, I am new to openstack.. Kindly guide me which mailining list is active and addresses the queries related to OpenStack S/W stack and advanced Infrastructure setup such as HA , Failover DC and DR site with OpenStack software components. Kindly share the list names for the above purpose where i can get response related to queries listed above. Alos which IRC chat channel supports day to day OpenStack S/W stack related discussions happen. Kindly advise me, as a newbie I would like to get some directions to this. Regards, Kris