[mpich-discuss] Size of a type created with MPI_Type_create_darray

[Jeff Hammond]

I've always found darray types to be profoundly confusing.  You might try
to use MPI_Type_create_subarray instead.

Jeff

On Fri, Nov 11, 2016 at 5:36 AM, Dorier, Matthieu <mdorier at anl.gov> wrote:

> Hi,
>
> I have a trace of an MPI program in which parameters of every MPI calls
> have been recorded. Some communication functions are using a user-defined
> type created with MPI_Type_create_darray.
>
> I would like to know what is the size of this type as a function of the
> parameters passed to MPI_Type_create_darray (again, I'm working on a trace,
> so I can't just call MPI_Type_size). We can assume, for simplicity, that
> the oldtype parameter is MPI_BYTE. I'm having troubles understanding, from
> the standard and from online documentation, how this function works and how
> I can compute this size. Could you help?
>
> Thanks,
>
> Matthieu
>
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-- 
Jeff Hammond
jeff.science at gmail.com
http://jeffhammond.github.io/
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