The DPMTA (Distributed Parallel Multipole Treecode Algorithm) package from the Scientific Computing Group at Duke University ( http://www.ee.duke.edu/Research/SciComp/SciComp.html). provides efficient full electrostatic calculations using a variation of the FMA algorithm. The source code for version 2.7 has been included in this distribution of NAMD to ease the installation of both packages and to ensure compatibility as development on DPMTA continues. The package is optional in the sense that you can perform cutoff simulations without DPMTA by specifying the configuration file parameter FMA to be off. If you do not want DPMTA support, simply comment out the following variable assignments in Make.config:
MDCOMM (http://www.ks.uiuc.edu/Research/mdcomm/) is a library routine and set of daemon processes that allow NAMD to communicate with the molecular visualization program VMD (http://www.ks.uiuc.edu/Research/vmd/) running on a remote machine via TCP/IP. By default, this package is not compiled with NAMD. To use with NAMD, first install MDCOMM and then uncomment the appropriate lines in Make.config and indicate the absolute path. However, please note that MDCOMM is presently unsupported.