Felix integrates with MPI C++ so easy

Makefile

.PHONY: test

test:
	flx --pkgconfig-path+=. -c --static -o mpi mpi.flx
	mpirun -np 5 mpi

mpi.flx

export requires header """ #include "mpi.h" """, package "mpi";

cproc master_proc () = {
    println$ "Hello from felix coordinator";
}

cproc worker_proc (id:int) = {
    println$ "Hello from felix worker!: " + id.str;
}

proc init_app() = {
    cstmt """
    MPI::Init($1, $2);
    int p = MPI::COMM_WORLD.Get_size();
    int id = MPI::COMM_WORLD.Get_rank();

    if (id == 0) $3(); // master process
    else $4(id); // worker process
    
    MPI::Finalize();
    """ (System::argc, System::_argv, master_proc, worker_proc) ;
}
init_app();

mpi.fpc

cflags: -I/usr/lib/openmpi/include -I/usr/lib/openmpi/include/openmpi
cflags: -L/usr/lib -L/usr/lib/openmpi/lib
requires_slibs: -lpthread -lmpi_cxx -lmpi -ldl -lhwloc

output

Hello from felix worker!: 4
Hello from felix coordinator
Hello from felix worker!: 2
Hello from felix worker!: 3
Hello from felix worker!: 1