[mpich-discuss] mpich hangs

[Pavan Balaji]

IIRC, Ubuntu has a firewall setup by default.  Try this:

% sudo ufw status

  -- Pavan

On 06/27/2013 09:48 PM, Syed. Jahanzeb Maqbool Hashmi wrote:
>
> As I already read some discussion on the mpich thread and I came to know
> these questions before:
>
>   * *Can you ssh from "node01" to "node02"?*
>     Yes I have passwordless ssh from each node to other (and vice versa)
>   * *Make sure the firewalls are turned off on all machines.*
>     I am using Ubuntu Linaro, 12.04, and I have no firewall installed on
>     all the nodes.
>
>
> Any other workaround :(
>
> On Fri, Jun 28, 2013 at 11:43 AM, Pavan Balaji <balaji at mcs.anl.gov
> <mailto:balaji at mcs.anl.gov>> wrote:
>
>
>     On 06/27/2013 09:41 PM, Syed. Jahanzeb Maqbool Hashmi wrote:
>
>         MPID_nem_tcp_connpoll(1826): Communication error with rank 0:
>         Connection
>         refused
>
>
>     Sounds like a firewall problem.
>
>     http://wiki.mpich.org/mpich/__index.php/Frequently_Asked___Questions#Q:_My_MPI_program___aborts_with_an_error_saying___it_cannot_communicate_with___other_processes
>     <http://wiki.mpich.org/mpich/index.php/Frequently_Asked_Questions#Q:_My_MPI_program_aborts_with_an_error_saying_it_cannot_communicate_with_other_processes>
>
>
>       -- Pavan
>
>     --
>     Pavan Balaji
>     http://www.mcs.anl.gov/~balaji
>
>

-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji