On 08/22/2014 10:10 AM, Saliya Ekanayake wrote:
Hi,

I've a quick question about the usage of Java binding.

Say there's a 2 dimensional double array (size m x n) that needs to be
sent to another rank. I see two options to get this done,

1. Copy values to a direct buffer of size m*n and send it
2. Copy values to a 1D array of size m*n and send it

i have no idea about the java mpi bindings, but can you describe the type with an mpi datatype?

==rob


I guess 2 would internally do the copying to a buffer and use it, so
suggesting 1. is the best option. Is this the case or is there a better
way to do this?


Thank you,
Saliya
--
Saliya Ekanayake esal...@gmail.com <mailto:esal...@gmail.com>
http://saliya.org


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--
Rob Latham
Mathematics and Computer Science Division
Argonne National Lab, IL USA

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