[MPICH] ROMIO / MPI_REGISTER_DATAREP

[Jeff Squyres]

Heh.  I only notice it because Sun noticed it during internal testing  
(7 months ago):

     https://svn.open-mpi.org/trac/ompi/ticket/1029

I don't think that any users have actually noticed.  :-)

Thanks.



On Dec 4, 2007, at 12:06 AM, Rajeev Thakur wrote:

> Yes, that is not yet implemented. You are the first to notice/try :-).
>
> Rajeev
>
>> -----Original Message-----
>> From: owner-mpich-discuss at mcs.anl.gov
>> [mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of Jeff Squyres
>> Sent: Monday, December 03, 2007 4:42 PM
>> To: mpich-discuss at mcs.anl.gov
>> Subject: [MPICH] ROMIO / MPI_REGISTER_DATAREP
>>
>> I notice that the read/write conversion functions in
>> MPI_REGISTER_DATAREP are stored, but they don't appear to be used
>> anywhere:
>>
>> -----
>> [14:40] svbu-mpi:/home/jsquyres/mpich2-1.0.6p1/src % egrep -r
>> 'read_conv_fn|write_conv_fn' *
>> mpi/romio/mpi-io/register_datarep.c:. read_conv_fn - function
>> invoked to convert from file representation to
>> mpi/romio/mpi-io/register_datarep.c:. write_conv_fn -
>> function invoked to convert from native representation to
>> mpi/romio/mpi-io/register_datarep.c:			
>> MPI_Datarep_conversion_function *read_conv_fn,
>> mpi/romio/mpi-io/register_datarep.c:			
>> MPI_Datarep_conversion_function *write_conv_fn,
>> mpi/romio/mpi-io/register_datarep.c:    datarep->read_conv_fn  =
>> read_conv_fn;
>> mpi/romio/mpi-io/register_datarep.c:    datarep->write_conv_fn =
>> write_conv_fn;
>> mpi/romio/adio/include/adioi.h:    MPI_Datarep_conversion_function
>> *read_conv_fn;
>> mpi/romio/adio/include/adioi.h:    MPI_Datarep_conversion_function
>> *write_conv_fn;
>> [14:40] svbu-mpi:/home/jsquyres/mpich2-1.0.6p1/src %
>> -----
>>
>> Am I missing something?  Or does ROMIO not support this
>> functionality?  (the MPICH2 man page for MPI_Register_datarep
>> does not say that these function pointers are effectively ignored)
>>
>> Thanks!
>>
>> --
>> Jeff Squyres
>> Cisco Systems
>>
>>


-- 
Jeff Squyres
Cisco Systems