libmpich-dev 3.2-4ubuntu2 (i386 binary) in ubuntu xenial

 MPICH is a high-performance and widely portable implementation of the
 Message Passing Interface (MPI) standard (both MPI-1 and MPI-2). It
 efficiently supports different computation and communication platforms
 including commodity clusters, SMPs, massively parallel systems, and
 high-speed networks.
 .
 This package includes the MPICH headers and static libraries, as well
 as the compiler wrappers needed to build MPICH programs.