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.<div><br><div class="gmail_quote">On Wed, Jan 25, 2012 at 4:28 PM, Rodrigo Oliveira <span dir="ltr">&lt;<a href="mailto:rsilva.oliveira@gmail.com">rsilva.oliveira@gmail.com</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Thatyene,<div><br></div><div>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. A<span style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">nyone have any idea about what can be?</span></div>


<div><font color="#222222" face="arial, sans-serif"><br></font></div><div><font color="#222222" face="arial, sans-serif">Best regards</font></div><div><font color="#222222" face="arial, sans-serif"><br></font></div><div>

<font color="#222222" face="arial, sans-serif">Rodrigo Oliveira</font><br><br></div></blockquote></div></div>