Here is a write-up of my computing platform and applications:

1. NWChem 6.1 (Feb 2012)
2. OpenMPI (version 1.4.3)
3. Intel Compilers 2011 XE (version 12.0.2)
4. Intel MKL (10.2.4.032)
5. Infiniband Inteconnect (OFED 1.5.3)
6. CentOS 5.4 (x86_64)

First thing first, just make sure your cluster has the necessary components. Here are some of the preliminary you may want to take a look

1. If you are eligible for the Intel Compiler Free Download. Download the Free Non-Commercial Intel Compiler Download
2. Build OpenMPI with Intel Compiler
3. Installing Voltaire QDR Infiniband Drivers for CentOS 5.4

Assuming you are done, you may want to download the NWChem 6.1 from NWChem Website. You may also want to take a look at instruction set for Compiling NWChem

# tar -zxvf Nwchem-6.1-2012-Feb-10.tar.gz
# cd nwchem-6.1

Create a script so that all these “export” parameter can be typed once only and kept. The script I called it nwchem_script_Feb2012.sh. Make sure that the ssh key are exchanged between the nodes. To have idea an of SSH key exchange, see blog entry Auto SSH Login without Password

Here is my nwchem_script_Feb2012.sh. For more details information, see Compiling NWChem for details on some of the parameters

export TCGRSH=/usr/bin/ssh
export NWCHEM_TOP=/root/nwchem-6.1
export NWCHEM_TARGET=LINUX64
export ARMCI_NETWORK=OPENIB
export IB_INCLUDE=/usr/include
export IB_LIB=/usr/lib64
export IB_LIB_NAME="-libumad -libverbs -lpthread"
export MSG_COMMS=MPI
export USE_MPI=y
export USE_MPIF=y
export USE_MPIF4=y
export MPI_LOC=/usr/local/mpi/intel
export MPI_LIB=$MPI_LOC/lib
export MPI_INCLUDE=$MPI_LOC/include
export LIBMPI="-L/usr/local/mpi/intel/lib -lmpi_f90 -lmpi_f77 -lmpi -lpthread"
export NWCHEM_MODULES=all
export LARGE_FILES=TRUE
export FC=ifort
export CC=icc
cd $NWCHEM_TOP/src
make clean
make 64_to_32
make USE_64TO32=y HAS_BLAS=yes BLASOPT="-L/opt/intel/mkl/10.2.4.032/lib/em64t -lmkl_intel_ilp64 -lmkl_sequential -lmkl_core -lpthread"
make FC=ifort CC=icc nwchem_config >& make.log

Do note that if you are compiling with proprietary BLAS libraries like MKL, note the instruction from Compiling NWChem

WARNING: In the case of 64-bit platforms, most vendors optimized BLAS libraries cannot be used. This is due to the fact that while NWChem uses 64-bit integers (i.e. integer*8) on 64-bit platforms, most of the vendors optimized BLAS libraries used 32-bit integers. BLAS libraries not supporting 64-bit integers (at least in their default options/installations) include CXML (DECOSF), ESSL (LAPI64), MKL (LINUX64/ia64 and x86_64), ACML(LINUX64/x86_64), and GotoBLAS2(LINUX64). The same holds for the ScaLAPACK libraries, which internally use 32-bit integers.

cd $NWCHEM_TOP/src
make clean
make 64_to_32
make USE_64TO32=y HAS_BLAS=yes BLASOPT="-L/opt/intel/mkl/10.2.4.032/lib/em64t -lmkl_intel_ilp64 -lmkl_sequential -lmkl_core -lpthread"

General Site Installation

Determine the local storage path for the install files. (e.g., /usr/local/NWChem).
Make directories

# mkdir /usr/local/nwchem-6.1
# mkdir /usr/local/nwchem-6.1/bin
# mkdir /usr/local/nwchem-6.1/data

Copy binary

# cp $NWCHEM_TOP/bin/${NWCHEM_TARGET}/nwchem /usr/local/nwchem-6.1/bin
# cd /usr/local/nwchem-6.1/bin
# chmod 755 nwchem

Copy libraries

# cd $NWCHEM_TOP/src/basis
# cp -r libraries /usr/local/nwchem-6.1/data

# cd $NWCHEM_TOP/src/
# cp -r data /usr/local/nwchem-6.1

# cd $NWCHEM_TOP/src/nwpw
# cp -r libraryps /usr/local/nwchem-6.1/data

The Final Lap (From Compiling NWChem)

Each user will need a .nwchemrc file to point to these default data files. A global one could be put in /usr/local/nwchem-6.1/data and a symbolic link made in each users $HOME directory is probably the best plan for new installs. Users would have to issue the following command prior to using NWChem: ln -s /usr/local/nwchem-6.1/data/default.nwchemrc $HOME/.nwchemrc

Contents of the default.nwchemrc file based on the above information should be:

nwchem_basis_library /usr/local/nwchem-6.1/data/libraries/
nwchem_nwpw_library /usr/local/nwchem-6.1/data/libraryps/
ffield amber
amber_1 /usr/local/nwchem-6.1/data/amber_s/
amber_2 /usr/local/nwchem-6.1/data/amber_q/
amber_3 /usr/local/nwchem-6.1/data/amber_x/
amber_4 /usr/local/nwchem-6.1/data/amber_u/
spce    /usr/local/nwchem-6.1/data/solvents/spce.rst
charmm_s /usr/local/nwchem-6.1/data/charmm_s/
charmm_x /usr/local/nwchem-6.1/data/charmm_x/