The in value is a T const&, meaning you're sending one single object. So I wonder why the "v" version is used.

Actually, I'm not sure why we are providing that interface.

What kind of type is T ? is it a primitive type, a POD or is it more complex ?

Cheers

----
Alain Miniussi
DSI, Pôles Calcul et Genie Log.
Observatoire de la Côte d'Azur
Tél. : +33492003009 (Mont-Gros)
+33483618544 (Sophia Antipolis)
+33609650665

----- On Feb 19, 2023, at 2:15 PM, 1 Reviewer via Boost-mpi <boost-mpi@lists.boost.org> wrote:

Hi,

I am running my program on a cluster. I use the following command in the program,

all_gatherv (const communicator& comm, const T& in_value, T* out_values,

const std::vector<int>& sizes).

The program works well if the size of in_value and out_values is small.

However, it fails if the size is big. I just can’t fix it.

Any help or advices are greatly appreciated.

Peng

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