Faasm provides a custom MPI implementation to execute existing unmodified MPI applications in a serverless context.
The Faasm MPI implementation covers the majority of commonplace MPI functionality (point-to-point, collective, one-sided, custom datatypes).
A number of MPI functions can be found at func/mpi. You can compile, upload
and invoke hellompi with the following:
inv compile mpi hellompi
inv upload mpi hellompi
inv invoke mpi hellompi
The MPI interface declarations live in the libfaasmpi
directory of
the cpp repo. The host interface definitions live
here.
Any new functions need to be included in the faasmpi.imports file in the
cpp repo.