NAMD Wiki: Namd28b3Release

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Issues with the 2.8b3 release of NAMD.

Please see the release notes at

For bugs fixed since the 2.8b2 release see Namd28b2Release and for all changes see

The experimental memory-optimized build option with parallel I/O is documented at NamdMemoryReduction.

On Lincoln at NCSA:


runs on GPU-accelerated Lincoln nodes. See the CUDA section of the release notes for details.

On the Ember Altix UV at NCSA:


On Ranger at TACC:


uses ibverbs.


can use 1way, 2way, or 4way processes per node with 15, 7, or 3 compute threads per process, and is again progressively slower because more cores are used for communication.

On Lonestar at TACC:




On Kraken at NICS:


still uses MPI but the binary is built with g++ for better performance.


will use 11 compute threads per process.