Re: [Boost-mpi] non blocking collectives

Subject: Re: [Boost-mpi] non blocking collectives
From: alainm (alain.miniussi_at_[hidden])
Date: 2016-10-20 04:40:25

Well, since the required buffer will have the same size on every 
process, this is a very good question indeed.
I just trusted the comments on that one.
I'll have a closer look shortly (or maybe someone with better knowledge 
can answer that one) but you're right, we can probably get rid of point 
to point on that one.
The only draw back I can think of is that the communication of the size 
will act as a barrier. Not sure if this is a real world problem though.

Cheers

Alain

On 20/10/2016 09:17, Lorenz Hübschle-Schneider wrote:
> Hi everyone,
>
> On 19/10/16 10:00, alainm wrote:
>> b) Not so trivial calls need to go though serialization, and 
>> manipulate the
>> archive using  point to point communication
>
> I don't understand why archives would need to be communicated using 
> point-to-point communication. I've posted this before with no 
> response, but under which circumstances would something like
>> https://gist.github.com/lorenzhs/79dab54552fd1f9381da
> fail?
>
> Cheers,
> Lorenz
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