OpenMPI

Download Source:	http://www.open-mpi.org/software/ompi/v1.2/downloads/openmpi-1.2.5.tar.bz2

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Introduction to OpenMPI

The Open MPI Project is an open source MPI-2 implementation that is developed and maintained by a consortium of academic, research, and industry partners.

Project Homepage: http://www.open-mpi.org/

Dependencies

Required

• OpenSSH

Configuration Information

--disable-mpi-f77: A CLFS system uses newer versions of the GCC that don't include F77 support. The configure will fail without passing this switch.

--without-xgrid: Suppress building Apple's XGrid batch system.

Non-Multilib

Compile the package:

./configure --prefix=/usr \ 
--disable-mpi-f77 --without-xgrid &&
make

Install the package:

make install

Multilib

This package does not provide any libraries so only one installation is required.

32Bit

Compile the package:

CC="gcc ${BUILD32}" CXX="g++ ${BUILD32} \ 
./configure --prefix=/usr --disable-mpi-f77 \ 
--without-xgrid &&
make

Install the package:

make install

N32

Compile the package:

CC="gcc ${BUILDN32}" CXX="g++ ${BUILDN32} \ 
./configure --prefix=/usr --libdir=/usr/lib32 \ 
--disable-mpi-f77 --without-xgrid &&
make

Install the package:

make install

64Bit

Compile the package:

CC="gcc ${BUILD64}" CXX="g++ ${BUILD64} \ 
./configure --prefix=/usr --libdir=/usr/lib64 \ 
--disable-mpi-f77 --without-xgrid &&
make

Install the package:

make install

Configuring

Create a host list for OpenMPI to use. This is not used automatically, but may specified when calling mpiexec. For example, mpiexec --hostfile $HOME/.openmpi_hosts -np 4 ./clusterjob.

cat > $HOME/.openmpi_hosts << "EOF"
# Begin $HOME/.openmpi_hosts

# This is the master node.
node1 slots=2 max-slots=2
 
# This is slave node 1 with only one processor.
node2
 
# This is slave node 2 with 4 processors, but only 3 may be used.
node3 slots=4 max-slots=3

# End $HOME/.openmpi_hosts
EOF
   

Contents

Installed Directories:	None
Installed Programs:	mpicc, mpiCC, mpic++, mpicxx, mpif90, mpiexec, mpirun
Installed Libraries:	libmpi.{la,so}, libmpi_cxx.{la,so}