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What is OpenMD? |
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OpenMD is an open source molecular dynamics engine which is capable of |
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efficiently simulating liquids, proteins, nanoparticles, interfaces, |
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and other complex systems using atom types with orientational degrees |
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of freedom (e.g. "sticky" atoms, point dipoles, and coarse-grained |
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assemblies). Proteins, zeolites, lipids, transition metals (bulk, flat |
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interfaces, and nanoparticles) have all been simulated using force |
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fields included with the code. OpenMD works on parallel computers |
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using the Message Passing Interface (MPI), and comes with a number of |
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analysis and utility programs that are easy to use and modify. An |
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OpenMD simulation is specified using a very simple meta-data language |
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that is easy to learn. |
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Simulations are started in OpenMD using a single Molecular Dynamics (.md) |
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file. These files must start with the <OpenMD> tag and must |
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have two sections: |
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1) a C-based <MetaData> section, and |
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2) a <Snapshot> block for initial coordinate and velocity information. |
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Detailed descriptions of the structures of these files are |
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available in the "doc" directory. Sample simulations are |
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available in the "samples" directory. |
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What you need to compile and use OpenMD: |
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1) Good C, C++ and Fortran95 compilers. We've built and tested OpenMD |
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on the following architecture & compiler combinations: |
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Architecture CC CXX F90 Notes |
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------------------------- ---- ----- ----- ---------------------- |
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ix86-pc-linux-gnu icc icpc ifort (Intel v. 10) |
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i686-apple-darwin10.0.0 gcc g++ gfortran (GNU v.4.3) |
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i686-apple-darwin10.0.0 icc icpc ifort (Intel v. 11) |
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x86_64-unknown-linux-gnu gcc g++ pathf95 (Pathscale 3.2) |
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OpenMD uses features of the Fortran 95 language. The fortran |
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portions of our code will not compile if your compiler does not |
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support these particular features. Some (but not all) Fortran 90 |
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compilers do support these features. |
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Compilers that are known to fail on OpenMD: g77, older versions of |
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gfortran, older Portland Group compilers (pgf77, pgf90). |
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Compilers that are known to work on OpenMD: Intel's ifort, |
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Pathscale's pathf95, IBM's xlf95, Portland-F¢s pgf95 (version 6 or-A |
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higher), Sun's f95. There may be others that work also. |
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2) GNU make (also known as gmake). Regular make won't work. |
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Really. We've tried. Don't bother with regular make. |
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Seriously. You need GNU make. Did we mention that you |
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need GNU make? |
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3) Perl. Compilation dependencies in Fortran95 are somewhat |
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complicated, so the build process uses a perl script called |
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filepp to do this job. You need perl for filepp, so you |
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need perl to build OpenMD. |
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4) MPI-2 is optional for the single processor version of OpenMD, but |
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is required if you want OpenMD to run in parallel. We like |
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OpenMPI. Other implementations of MPI-2 might work, but we haven-F¢t-A |
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tried. You can get Open MPI here: http://www.open-mpi.org/ |
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INSTRUCTIONS |
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1) Get, build, and test the required pieces above. |
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2) ./configure |
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3) make |
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4) make install |
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That's it. |
