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README.md

plumed_em_md

Scripts to make running a PLUMED EM MD simulation (https://doi.org/10.1016/j.bpj.2018.02.028) much easier.

Requires:

Install:

  • confirm gcc and mpicc match (on qb3 scl enable devtoolset-7 bash, module load openmpi-1.8-x86_64)
  • compile plumed
  git clone https://github.com/plumed/plumed2.git
  cd plumed2
  git checkout isdb
  ./configure --disable-python
  make -j 12
  • compile GROMACS
wget http://ftp.gromacs.org/pub/gromacs/gromacs-2016.5.tar.gz
tar -xvf gromacs-2016.5.tar.gz
cd /netapp/home/jaimefraser/gromacs-2016.5
plumed-patch -p --shared
## Choose gromacs-2016.5 (option 2)
mkdir build
cd build
mkdir /netapp/home/jaimefraser/gromacs-2016.5-bin/
cmake ../ -DBUILD_SHARED_LIBS=ON -DGMX_OPENMP=OFF -DGMX_THREAD_MPI=OFF -DGMX_GPU=OFF -DCMAKE_INSTALL_PREFIX=/netapp/home/jaimefraser/gromacs-2016.5-bin/ -DCMAKE_CXX_COMPILER=mpic++ -DCMAKE_C_COMPILER=mpicc -DGMX_MPI=ON -DGMX_USE_RDTSCP=off
## Need the DGMX_USE_RDTSCP flag off b/c iqint is different subtly than some other nodes on qb3 cluster! if using in an environment with only one CPU type, delete that flag.
make -j 12
make install

Edit bash_profile or launch scripts to include:

source ~/plumed2/sourceme.sh
source ~/gromacs-2016.5-bin/bin/GMXRC

Prep maps:

  • generate_gmm.py - prepares map in gmm format
  • convert_GMM2PLUMED.sh - generates input gmm.dat file for plumed (from Max)

Prep simulation:

  • prep_directory.py - copies instruction files into working directory:
  • prep_plumed.py - equilibrates
  • prep_plumed_2.py - sets up simulation
  • prep_plumed_3.py - outputs command to run simulation
    • One significant change relative to published method, we remove negative scatterers from contributing to the density calculation.
  • simulation can then be run on command line

On SGE:

  • launch_gmm.py - generates GMM
  • launch_prep.py - equilibrates
  • lauch_prep2.py - sets up simulation
  • launch_prep3.py - outputs commands to run simulation
  • launch_simulation.py - runs simulation

Analysis:

  • still a work in progress
  • generate_trajectories_as_pdbs.py - outputs md simulation as gro or pdb files

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