[MPI3 Fortran] MPI User Defined Op in Fortran

Jeff Squyres jsquyres at cisco.com
Fri Jun 29 07:45:06 CDT 2012

In this case, you will need to define your own MPI_Op -- the pre-defined MPI_Op's only work with a limited set of pre-defined MPI_Datatypes.  See the table in MPI-2.2 on pages 165 and 166.

On Jun 27, 2012, at 9:09 PM, Dharmendar Reddy wrote:

> Hello,
>         Can some one help me with user defined MPI reduce operation in FORTRAN. I have defined a MPI_TYPE_CONTIGUOUS and am able to send and receive it. When i try to to MPI_Reduce, i get error. I have attached the code. 
> Thanks
> reddy
> -- 
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> Dharmendar Reddy Palle
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Jeff Squyres
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