When MPI sends a message, the second datatype is taken from the location (lower bound + extent), the third datatype from (lower bound + 2*extent), and so on. So the lower bound does affect what is sent. Rajeev
On Dec 8, 2016, at 7:54 AM, [email protected] <[email protected]> wrote:
Hi,
In MPI_Type_create_resized we can change the extent and the lower bound.
I don't understand what is the interest of changing the lower bound, since for sending message, only the extent is used.
Is there an example where the value for lower bound in MPI_Type_create_resized have a real impact ?
Thanks
-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Dimitri Lecas
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