libboost-mpi1.74-dev 1.74.0+ds1-21.2ubuntu1 (riscv64 binary) in ubuntu mantic

 This package forms part of the Boost C++ Libraries collection.
 .
 The Boost.MPI library provides a C++ interface to MPI that
 supports modern C++ development styles, including complete support for
 user-defined data types and C++ Standard Library types, arbitrary function
 objects for collective algorithms, and the use of modern C++ library
 techniques to maintain maximal efficiency.