LAM-MPI is a freely available implementation of MPI. Information about LAM-MPI can be found at the LAM-MPI home page
LAM-MPI is freely available for download from the LAM-MPI download page.
There are no known dependencies.
After you have downloaded and unpacked the LAM-MPI packages, the typical build process is followed. After setting up the environment and determining the final installation directory, you run configure followed by make and finally make install. Please modify this example as needed. Be sure to change the prefix path. We assume the PGI compilers are installed in the default /opt/pgi directory.
tar -xvjf lam-7.1.4.tar.bz2 cd lam-7.1.4 export CC=pgcc export CXX=pgCC export F77=pgfortran export FC=pgf77 ./configure --prefix=/opt/pgi/linux86/2011/mpi/lam ! for 32-bit ./configure --prefix=/opt/pgi/linux86-64/2011/mpi/lam ! for 64-bit
To build and install, simply run 'make' and 'make install'.
make make install
After you have successfully installed the LAM-MPI library you will need to create a 'machine' file with the list of your cluster's host names. See the LAM-MPI User's Guide
To test your LAM-MPI installation, the LAM-MPI package contains several example test programs. First make sure that the LAM-MPI install bin directory is in your PATH environment variable. The LAM-MPI test suite can be used to test the installation. It is available at http://www.lam-mpi.org/download/files/lamtests-7.1.4.tar.bz2.
export PATH=/opt/pgi/linux86/2011/mpi/lam/bin:opt/pgi/linux86/2011/bin:$PATH ! for 32-bit export PATH=/opt/pgi/linux86-64/2011/mpi/lam/bin:opt/pgi/linux86-64/2011/bin:$PATH ! for 64-bit tar -xvjf lamtests-7.1.4.tar.bz2 cd lamtests-7.1.4 ./configure
The configure for the lamtests may fail with a message similar to this:
checking how to get verbose linking output from mpif77... -v checking for Fortran libraries of mpif77... -L/opt/pgi/linux86-64/2011/mpi/lam/lib -llammpio -llamf77mpi -lmpi -llam -lutil -ldl' -L/opt/pgi/linux86-64/11.0/lib -L/usr/lib64 -L/usr/lib/gcc/x86_64-linux-gnu/4.4.3 -ldl -lpgmp -lpgbind -lnuma -lpthread -lpgftnrtl -lnspgc -lpgc -lrt -lm checking for dummy main to link with Fortran libraries... unknown configure: error: linking to Fortran libraries from C fails
If you look closely, you will notice that there is an extra ' in the link line at -ldl'. This needs to be removed for the configure to succeed. Copy the entire link line and edit out that extra ' and set the FLIBS environment variable as follows:
export FLIBS="-L/opt/pgi/linux86-64/2011/mpi/lam/lib -llammpio -llamf77mpi -lmpi -llam -lutil -ldl -L/opt/pgi/linux86-64/11.0/lib -L/usr/lib64 -L/usr/lib/gcc/x86_64-linux-gnu/4.4.3 -ldl -lpgmp -lpgbind -lnuma -lpthread -lpgftnrtl -lnspgc -lpgc -lrt -lm" ./configure make
Before running the tests, you will need to boot into the lamboot environment.
lamboot -v -ssi boot rsh hostfile
The test cases can be run once lamboot is running:
make -k check
The PGI graphical MPI-parallel debugger, PGDBG, has not been modified to work with LAM-MPI.