Install EMAN2/SPARX¶

It is best to install EMAN2/SPARX from source, so that do not have conflicts with having two different versions of python on your system. Binaries of EMAN2/SPARX all come with their own python pre-installed.

This documentation assumes you are using CentOS 6 (written as of CentOS 6.2)

Install require pre-packages for EMAN2 compiling¶

yum based packages¶

• Make sure EPEL is install, if not go here: Download additional Software (CentOS Specific)
• Use yum to install devel libraries:
  

  sudo yum install fftw-devel gsl-devel boost-python numpy \
   PyQt4-devel cmake ipython hdf5-devel libtiff-devel libpng-devel \
   PyOpenGL ftgl-devel db4-devel python-argparse openmpi-devel
  

bsddb3¶

Additionally you need to install the python-bsddb3 library (not available via YUM). I just use the pypi easy_installer, yum will never know.

sudo easy_install bsddb3

Download the source¶

1. To download the source code go to the link:
   • http://blake.bcm.edu/emanwiki/EMAN2
2. Click on "Current stable version - direct link"
3. Go under the heading "Source" at bottom of page
4. Click to download the eman-source-2.xx.tar.gz file (as of August 2012, 2.xx is 2.06)

Work with the source¶

1. go to the directory with the source code
2. extract the archive:
   

   tar zxvf eman-source-2.06.tar.gz
   

3. go into directory
   

   cd EMAN2/src/build

4. start configure script:
   

   cmake ../eman2/

   • Note: alternatively you can run ccmake ../eman2/ and configure all the parameters
5. start compiling:
   

   make

6. install to directory:
   

   sudo make install

Set environmental variables¶

bash¶

sudo nano /etc/profile.d/eman2.sh

export EMAN2DIR=/usr/local/EMAN2
export PATH=${EMAN2DIR}/bin:${PATH}
export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${EMAN2DIR}/lib
export PYTHONPATH=${EMAN2DIR}/lib:${EMAN2DIR}/bin

Test to see if code works¶

see http://blake.bcm.edu/emanwiki/EMAN2/FAQ/EMAN2_unittest

cd EMAN2/test/rt
./rt.py

Install MyMPI for MPI functions¶

see http://sparx-em.org/sparxwiki/MPI-installation
or https://www.nbcr.net/pub/wiki/index.php?title=MyMPI_Setup

This fixes this problem:

    from mpi import mpi_init
ImportError: No module named mpi

This module was very difficult to get working, it seems to be a poorly supported python wrapper for MPI. So, what we are going to do is compile the module, rename it, and create a wrapper. So, essentially we are creating a wrapper around the wrapper. We can only hope they switch to [http://mpi4py.scipy.org/ mpi4py] in the future.

Install MyMPI¶

• Download source:
  

  wget 'http://sparx-em.org/sparxwiki/MPI-installation?action=AttachFile&do=get&target=pydusa-1.15-sparx.tgz'

• Extract:
  

  tar zxvf pydusa-1.15-sparx.tgz

• go into directory
  

  cd pydusa-1.15-sparx

• setenv MPIINC /usr/include/openmpi-x86_64/
• ./configure --with-mpicc=/usr/lib64/openmpi/bin/mpicc
  • if it fails you need to change these lines in configure
    

    nano configure

    
    

    elif test -d ${PY_PREFIX}/lib/python$PY_VERSION/site-packages/numpy/core/include; then
       PY_HEADER_NUMPY="-I${PY_PREFIX}/lib/python$PY_VERSION/site-packages/numpy/core/include" 
    

    elif test -d ${PY_PREFIX}/lib64/python$PY_VERSION/site-packages/numpy/core/include; then
       PY_HEADER_NUMPY="-I${PY_PREFIX}/lib64/python$PY_VERSION/site-packages/numpy/core/include" 
    

• compile the source:
  

  make

• copy the mpi.so to site-packages with a different name:
  

  sudo cp -v src/mpi.so /usr/lib64/python2.6/site-packages/mympi.so

• create a wrapper around the wrapper:
  

  sudo nano /usr/lib64/python2.6/site-packages/mpi.py

from mympi import *

def mpi_init():
  import ctypes
  mpi = ctypes.CDLL('libmpi.so.1', ctypes.RTLD_GLOBAL)
  f = ctypes.pythonapi.Py_GetArgcArgv
  argc = ctypes.c_int()
  argv = ctypes.POINTER(ctypes.c_char_p)()
  f(ctypes.byref(argc), ctypes.byref(argv))
  sys.argv = mpi_init(len(sys.argv), sys.argv)

* test 1: python -c 'from mpi import mpi_init' * test 2: sxisac.py start.hdf (Note: start.hdf does not need to exist)

Documentation¶

• http://blake.bcm.edu/emanwiki/EMAN2/Install
• http://blake.bcm.edu/emanwiki/EMAN2/FAQ/eman2BuildFAQ

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