CL-MPI has been successfully tested with SBCL (both 32/64-bit) and CMUCL, with MPICH1.2 and MPICH2 1.0.8.
CL-MPI can also be used to provide "true" multiprocessing for some Common Lisp implementations which don't have native threading capabilities.
A new version with many enhancements is currently under development. The repository is http://github.com/marcoheisig/cl-mpi
Tutorials using cl-mpi: