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AMBER - Assisted Model Building with Energy Refinement

AMBER refers to two things: a set of molecular mechanical force fields for the simulation of biomolecules (which are in the public domain, and are used in a variety of simulation programs); and a package of molecular simulation programs which includes source code and demos.

Assisted Model Building with Energy Refinement

"Amber" refers to two things: a set of molecular mechanical force fields for the simulation of biomolecules (which are in the public domain, and are used in a variety of simulation programs); and a package of molecular simulation programs which includes source code and demos. The current version of the code is Amber version 11, which is distributed by UCSF subject to a licensing agreement described on the Amber home page. Essentially this means that you may use the software only for research and teaching purposes.

Versions installed on LRZ HPC systems

Version Platform
Amber 10 (parallel) Altix 4700 (HLRB-II) and Opteron Linux Cluster
Amber 11 (parallel) Altix 4700 (HLRB-II), sgi ICE and Opteron Cluster

Usage of Amber on LRZ systems

Please load the appropriate environment module:

module load amber

This will enable you to run all available binaries for the loaded version of Amber. E. g., you can then call xleap or sander.

Notes:

  • leaprc files may be copied from $AMBERHOME/dat/leap/cmd
  • MPI parallel executables have the postfix MPI e.g., sander.MPI
  • with version 11, pmemd comes in two flavors: A serial pemd binary, and an MPI parallel pmemd.MPI binary
  • likewise, version 11 allows the nab program to run in parallel. This is done by setting OMP_NUM_THREADS to the number of threads one wishes to use.

Documentation and support

Please consult the Amber home page for documentation:

If the amber environment module is loaded, the environment variable $AMBER_DOC will point at a directory containing PDF documentation.

If you notice any problems with the LRZ installation of Amber, please contact LRZ HPC support.