Michael,
I remember i saw similar reports.
Could you give a try to the latest v1.10.1 ?
And if that still does not work, can you upgrade icc suite and give it an other
try ?
I cannot remember whether this is an ifort bug or the way ompi uses fortran...
Btw, any reason why you do not
Use mpi_f08 ?
HTH
Gilles
michael.rach...@dlr.de wrote:
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>
>Dear developers of OpenMPI,
>
>
>
>I am trying to run our parallelized Ftn-95 code on a Linux cluster with
>OpenMPI-1-10.0 and Intel-16.0.0 Fortran compiler.
>
>In the code I use the module MPI (“use MPI”-stmts).
>
>
>
>However I am not able to compile the code, because of compiler error messages
>like this:
>
>
>
>/src_SPRAY/mpi_wrapper.f90(2065): error #6285: There is no matching specific
>subroutin for this generic subroutine call. [MPI_REDUCE]
>
>
>
>
>
>The problem seems for me to be this one:
>
>
>
>The interfaces in the module MPI for the MPI-routines do not accept a send or
>receive buffer array, which is
>
>actually a variable, an array element or a constant (like MPI_IN_PLACE).
>
>
>
>Example 1:
>
> This does not work (gives the compiler error message: error #6285:
>There is no matching specific subroutin for this generic subroutine call )
>
> ivar=123 ! ß ivar is an integer variable, not an array
>
> call MPI_BCAST( ivar, 1, MPI_INTEGER, 0, MPI_COMM_WORLD), ierr_mpi )
> ! ß- this should work, but is not accepted by the compiler
>
>
>
> only this cumbersome workaround works:
>
> ivar=123
>
> allocate( iarr(1) )
>
> iarr(1) = ivar
>
> call MPI_BCAST( iarr, 1, MPI_INTEGER, 0, MPI_COMM_WORLD, ierr_mpi )
> ! ß- this workaround works
>
> ivar = iarr(1)
>
> deallocate( iarr(1) )
>
>
>
>Example 2:
>
> Any call of an MPI-routine with MPI_IN_PLACE does not work, like that
>coding:
>
>
>
> if(lmaster) then
>
> call MPI_REDUCE( MPI_IN_PLACE, rbuffarr, nelem, MPI_REAL8, MPI_MAX &
> ! ß- this should work, but is not accepted by the compiler
>
> ,0_INT4, MPI_COMM_WORLD, ierr_mpi )
>
> else ! slaves
>
> call MPI_REDUCE( rbuffarr, rdummyarr, nelem, MPI_REAL8, MPI_MAX &
>
> ,0_INT4, MPI_COMM_WORLD, ierr_mpi )
>
> endif
>
>
>
> This results in this compiler error message:
>
>
>
> /src_SPRAY/mpi_wrapper.f90(2122): error #6285: There is no matching
>specific subroutine for this generic subroutine call. [MPI_REDUCE]
>
> call MPI_REDUCE( MPI_IN_PLACE, rbuffarr, nelem, MPI_REAL8, MPI_MAX
>&
>
>-------------^
>
>
>
>
>
>In our code I observed the bug with MPI_BCAST, MPI_REDUCE, MPI_ALLREDUCE,
>
>but probably there may be other MPI-routines with the same kind of bug.
>
>
>
>This bug occurred for : OpenMPI-1.10.0 with
>Intel-16.0.0
>
>In contrast, this bug did NOT occur for: OpenMPI-1.8.8 with Intel-16.0.0
>
>
>OpenMPI-1.8.8 with Intel-15.0.3
>
>
>OpenMPI-1.10.0 with gfortran-5.2.0
>
>
>
>Greetings
>
>Michael Rachner
>
