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From: Rainer Keller (keller_at_[hidden])
Date: 2007-06-19 10:09:10

Hello dear all,
with the current numbering in mpif-common.h, the optional ddt MPI_REAL2 will
break the binary compatibility of the fortran interface from v1.2 to v1.3
(see r15133).

Now apart from MPI_REAL2 being of let's say rather minor importance, the group
may feal that the numbering of datatypes is crucial to the end user and the
(once agreed upon) allowed binary incompatibility for major version number
changes is void.

(The most important datatype that this change affects is MPI_DOUBLE_PRECISION:
users will need to recompile their code with v1.3...)

Please raise Your hand if anybody cares.


Dipl.-Inf. Rainer Keller
 High Performance Computing       Tel: ++49 (0)711-685 6 5858
   Center Stuttgart (HLRS)           Fax: ++49 (0)711-685 6 5832
 POSTAL:Nobelstrasse 19                 email: keller_at_[hidden]     
 ACTUAL:Allmandring 30, R.O.030            AIM:rusraink
 70550 Stuttgart