We have been experiencing an issue with the Ethernet switches in the Owens cluster. 

NAMD 2.11 precompiled binaries do not work


NAMD 2.11 precompiled binaries do not work.  Please use NAMD 2.11 installed from the source and available via module namd/2.11.

The NAMD 2.11 issue involves changes to the command charmrun in Charmm++.

A typical symtom is:

Host key verification failed.

Charmrun> Error 255 returned from remote shell (n72:0)

For more details see http://www.ks.uiuc.edu/Research/namd/mailing_list/namd-l.2016-2017/0039.html.