Alain,

Thank you!

The interface is provided in all_gatherv.hpp, boost version 1.73.0.  Sorry there is no in_value  and it is in_values.

I use the "v" version because I have to divide a vector of objects of type "T" into parts with different sizes.

The "T" is not a primitive type. It is a class defined by myself and the class is complicated.

Cheers

Peng

发件人: Alain O' Miniussi via Boost-mpi
发送时间: 2023年2月20日 17:51
收件人: Discussion of Boost.MPI development
抄送: Alain O' Miniussi
主题: Re: [Boost-mpi] Is there size limit for the messages being sent andreceived?

Hi

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.
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Tél. : +33492003009 (Mont-Gros)
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----- 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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