starpu_init() must be called before starpu_mpi_init_comm().

doc/doxygen/chapters/api/mpi.doxy

@@ -23,6 +23,7 @@ Initializes the starpumpi library with the given communicator.
 \p initialize_mpi indicates if MPI should be initialized or not by StarPU.
 If the value is not 0, MPI will be initialized by calling
 <c>MPI_Init_Thread(argc, argv, MPI_THREAD_SERIALIZED, ...)</c>.
+starpu_init() must be called before starpu_mpi_init_comm().
 
 \fn int starpu_mpi_init(int *argc, char ***argv, int initialize_mpi)
 \ingroup API_MPI_Support

mpi/examples/native_fortran/nf_basic_ring.f90

@@ -30,12 +30,6 @@ program nf_basic_ring
         integer(c_int) :: src,dst
         type(c_ptr) :: token_dh, st
 
-        ret = fstarpu_mpi_init(1)
-        print *,"fstarpu_mpi_init status:", ret
-        if (ret /= 0) then
-                stop 1
-        end if
-
         ret = fstarpu_init(C_NULL_PTR)
         if (ret == -19) then
                 stop 77
@@ -43,6 +37,12 @@ program nf_basic_ring
                 stop 1
         end if
 
+        ret = fstarpu_mpi_init(1)
+        print *,"fstarpu_mpi_init status:", ret
+        if (ret /= 0) then
+                stop 1
+        end if
+
         ! stop there if no CPU worker available
         ncpu = fstarpu_cpu_worker_get_count()
         if (ncpu == 0) then

mpi/examples/native_fortran/nf_mm.f90

@@ -32,12 +32,6 @@ program nf_mm
         integer(c_int) :: b_row, b_col
         integer(c_int) :: mr, tag, rank
 
-        ret = fstarpu_mpi_init(1)
-        print *,"fstarpu_mpi_init status:", ret
-        if (ret /= 0) then
-                stop 1
-        end if
-
         ret = fstarpu_init(C_NULL_PTR)
         if (ret == -19) then
                 stop 77
@@ -45,6 +39,12 @@ program nf_mm
                 stop 1
         end if
 
+        ret = fstarpu_mpi_init(1)
+        print *,"fstarpu_mpi_init status:", ret
+        if (ret /= 0) then
+                stop 1
+        end if
+
         ! stop there if no CPU worker available
         ncpu = fstarpu_cpu_worker_get_count()
         if (ncpu == 0) then