On Feb 14, 2005, at 11:15 AM, daniel.egloff_at_[hidden] wrote:
> I just tried out the example lam4-dev/examples/romio.test
> which uses MPI_Type_darray MPI 2 datatype function. I got the error
>
> Unsupported datatype passed to ADIOI_Count_contiguous_blocks
>
> As described in
>
> http://lam.fries.net/MailArchives/lam/msg07161.php
>
> this is because MPI_Type_darray is a MPI-2 derived datatype, whereas
> ROMIO assumes
> that it is built on top of MPI-1 derived datatypes.
>
> Is there a change that LAM can handle this in near future, e.g. in
> 7.1.2?
I apologize for the delay in replying. The change required to support
MPI-2 derived datatypes would be from ROMIO and not LAM. ROMIO is not
developed by the authors of LAM, and we try to stay as close to what
Argonne (the ROMIO developers) ships as possible. I am not sure if
ROMIO now properly supports MPI-2 derived datatypes, but at this point
we would be reluctant to upgrade ROMIO in the 7.1.x series for
stability reasons.
Which is a long winded way of saying that 7.1.2 will not support MPI-2
derived datatypes in ROMIO.
Brian
--
Brian Barrett
LAM/MPI developer and all around nice guy
Have an LAM/MPI day: http://www.lam-mpi.org/
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