Hi:
I agonized a little today getting LibMesh working on one of my
group's computational servers so I decided to document the installation
process:
-----Installation on Debian Lenny/Testing-----
> aptitude install libmesh0.6.1 libmesh0.6.1-dev
Yes, its that easy, but not so fast...
----Installation on Debian Etch/Stable-----
1) I used the latest version of LibMesh (0.6.2)
2) Installing the package petsc-dev takes care of installing MPICH for you
> aptitude install petsc-dev
Edit the file /etc/mpich/machines.linux to describe your network
topology, I just want to use my SMP machine, so I added this line:
localhost:8
where the ":8" reflects the number of processors my system has.
3) Unfortunately it does not install rsh which is required my MPICH:
> aptitude install rsh-server rsh-client
4) Create a file ~/.rhosts and add a line:
localhost USERNAME
where you substitute your user name in, you also might have to add
"localhost" to your /etc/hosts.allow file for this to work. At this
point you should be able to run "tstmachines.mpich" to verify that MPI
is working
5) Unpack the LibMesh tarball and do the following (depending on your
shell):
> export PETSC_ARCH="linux-gnu-c-opt"
> export PETSC_DIR="/usr/lib/petscdir/2.3.2/"
>./configure --with-mpi=/usr/lib/mpich --with-cxx=mpicxx.mpich
--with-cc=mpicc.mpich --with-f77=mpif77.mpich -with-CC=mpiCC.mpich
This took me a while to figure out, but you need to make sure LibMesh
knows you are using MPICH, because without the first option it will be
configured for LAM-MPI. The other options are intuitive, except you
need to use the suffix ".mpich" on all of the compilers so that you do
not end up using the LAM wrapper version
6) Compile and test (if you have multiple processors use the -j option
to let make know)
> make -j 8
> cd examples/ex9
> mpirun -np 8 ./ex9-opt
Hopefully I didn't miss anything.
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