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Fix undefined allreduce min/max/sum results in non-MPI builds #1971

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Fix undefined allreduce min/max/sum results in non-MPI builds #1971

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8 changes: 8 additions & 0 deletions src/common/m_mpi_common.fpp
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Original file line number Diff line number Diff line change
Expand Up @@ -265,6 +265,8 @@ contains

allocate (gathered_vector(sum(recounts)))
call MPI_GATHERV(my_vector, counts, mpi_p, gathered_vector, recounts, displs, mpi_p, root, MPI_COMM_WORLD, ierr)
#else
gathered_vector = my_vector
#endif

end subroutine s_mpi_gather_data
Expand Down Expand Up @@ -373,6 +375,8 @@ contains
integer :: ierr !< Generic flag used to identify and report MPI errors

call MPI_ALLREDUCE(var_loc, var_glb, 1, mpi_p, MPI_SUM, MPI_COMM_WORLD, ierr)
#else
var_glb = var_loc
#endif

end subroutine s_mpi_allreduce_sum
Expand Down Expand Up @@ -440,6 +444,8 @@ contains
integer :: ierr !< Generic flag used to identify and report MPI errors

call MPI_ALLREDUCE(var_loc, var_glb, 1, mpi_p, MPI_MIN, MPI_COMM_WORLD, ierr)
#else
var_glb = var_loc
#endif

end subroutine s_mpi_allreduce_min
Expand Down Expand Up @@ -470,6 +476,8 @@ contains
integer :: ierr !< Generic flag used to identify and report MPI errors

call MPI_ALLREDUCE(var_loc, var_glb, 1, mpi_p, MPI_MAX, MPI_COMM_WORLD, ierr)
#else
var_glb = var_loc
#endif

end subroutine s_mpi_allreduce_max
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