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Subject: Re: [OMPI users] MPI_Comm_split and intercommunicator - Problem
From: Thatyene Louise Alves de Souza Ramos (thatyene_at_[hidden])
Date: 2012-01-25 13:50:11


It seems the split is blocking when must return MPI_COMM_NULL, in the case
I have one process with a color that does not exist in the other group or
with the color = MPI_UNDEFINED.

On Wed, Jan 25, 2012 at 4:28 PM, Rodrigo Oliveira <rsilva.oliveira_at_[hidden]
> wrote:

> Hi Thatyene,
>
> I took a look in your code and it seems to be logically correct. Maybe
> there is some problem when you call the split function having one client
> process with color = MPI_UNDEFINED. I understood you are trying to isolate
> one of the client process to do something applicable only to it, am I
> wrong? According to open mpi documentation, this function can be used to do
> that, but it is not working. Anyone have any idea about what can be?
>
> Best regards
>
> Rodrigo Oliveira
>
>