[mvapich-discuss] Re: Problems with hostname resolution and MPI_INIT() (Mike Heinz)

[Jaidev Sridhar]

Hi,

As suggested here, we've updated the userguide
(http://mvapich.cse.ohio-state.edu/support/user_guide_mvapich2-1.2.html#x1-160005.2.1).

-Jaidev

On Wed, 2009-01-14 at 07:26 -0600, Terrence.LIAO at total.com wrote:
> 
> Mike, 
> 
> We have the same problem before (posted in mvapich-discuss Digest, Vol
> 37, Issue 1) and just like you, I dug into the mvapich code and
> modified the get_host_id().  System admin told me, it is a normal
> practice to put hostname to 127.0.0.1 entry just like yours. Of course
> this the culprit.  Later on, to resolve a sendmail conflict, system
> admin removed the hostname from the 127.0.0.1 entry and created the
> real IP to hostname entry on /etc/hosts. Of course, with this, no more
> mvapich code change for me.  May be the solution to this is let
> mvapich install guide to advise or recommend to create entry for
> hostname in /etc/hosts, and to warn the potential problem if added it
> into 127.0.0.1. (May be this is already been done and, well, I have to
> admit that I did not read the entire install guide. ) 
> 
> Thank you very much.
> 
> -- Terrence
> --------------------------------------------------------
> Terrence Liao, Ph.D.
> Research Computer Scientist
> TOTAL E&P RESEARCH & TECHNOLOGY USA, LLC
> 1201 Louisiana, Suite 1800, Houston, TX 77002 
> Tel: 713.647.3498  Fax: 713.647.3638
> Email: terrence.liao at total.com
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