[MPICH] Re: [mvapich-discuss] Fatal error in MPI_Allreduce

[amith rajith mamidala]

Hi Christian,

We are not very sure about the exact reason why Intel 10.0 compiler causes
the miscompilation. However, the source of the problem could be not
defining the fortran bindings properly. You can take a look at the file:
trunk/src/mpi/coll/opminloc.c which causes this error to occur.
I would suggest to contact the mpich team to see if this is a known error.

Thanks,

Amith.

On Thu, 29 Nov 2007, Christian Guggenberger wrote:

> Hi,
>
> attach is a small piece of Fortran code, which crashes with
>
> Fatal error in MPI_Allreduce: Invalid MPI_Op, error stack:
> MPI_Allreduce(707)..........: MPI_Allreduce(sbuf=0x610be0,
> rbuf=0x610c40, count=5, MPI_2DOUBLE_PRECISION, MPI_MINLOC,
> MPI_COMM_WORLD) failed
> MPIR_MINLOC_check_dtype(215): MPI_Op MPI_MINLOC operation not defined
> for this datatype
>
> as soon as it is compiled/linked with a MPI library (both mpich2 and mvapich2),
> which was compiled with Intel C/C++ 10.0.026 and/or 10.1.008 on Linux
> x86_64 machines.
>
> Intel 9.1, GNU or mixtures of GNU C/C++ and Lahey/Fujitsu Fortran work
> well.
>
> My question - is anyone aware of miscompilation(s) of mpich2/mvapich2 caused by Intel C/C++
> 10.0 and 10.1 ?
>
> thanks a lot,
>
>  - Christian
>