CXXBLACS is a simple C++ wrapper for BLACS (Basic Linear Algebra Communication Subroutines) as well as some utilities in ScaLAPACK ( Scalable Linear Algebra Package). In addition to wrapping this basic (traditionally FORTRAN) functionality in a high-level C++ API, some very basic additionial functionality if provided, such as gathering to and distributing from a root MPI process. For a full list of the current functionality, please look over the documentation (built via doxygen).
Contact the developers:
David Williams-Young