[mpich-discuss] Predefined datatype implementation

[Pavan Balaji]

FWIW, even if MPI_VERSION and MPI_SUBVERSION are set correctly, there’s no guarantee that these types are available.  Types are only defined based on what compiler you use.  For example, if you use a C89 only compiler, these types will not be available.

configure is the only reliable check for these.

  — Pavan

On Nov 19, 2013, at 10:39 AM, Jeff Hammond <jeff.science at gmail.com> wrote:

>> Since some vendors have been less than precise about setting MPI_VERSION
>> and MPI_SUBVERSION, configure tests are the only reliable way to
>> determine availability of such types.
> 
> Correct.  It seems you answered your own questions :-)
> 
> Jeff
> 
> 
> -- 
> Jeff Hammond
> jeff.science at gmail.com
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--
Pavan Balaji
http://www.mcs.anl.gov/~balaji