Re: MPICH-GM and iptables

Hello all:

	Never mind: I've formed the iptables rule. 
		
						Dan Strahs



On Mon, 25 Jul 2005, Dan Strahs wrote:

> 
> Hi:
> 
> I've compiled MPICH-GM version 1.2.6..14b with GM version 2.0.21. The OS
> is Fedora Core 3 with the 2.6.11-1.35_FC3smp kernel. I've been testing
> MPICH-GM with the simple example routine hello++ installed in
> /opt/mpi/examples.
> 
> When I run the routine using processors on the local node, the program
> executes fine.
> 
> When I run the routine using processors on different nodes, the program 
> hangs indefinitely and exits after 5 or 10 minutes with a "failure to 
> connect" error.
> 
> If I turn iptables off ("/etc/init.d/iptables stop") and try hello++ with 
> processors on different nodes, the program executes fine.
> 
> Iptables appears to be the problem. Does anybody have a working iptables 
> rule that lets MIPCH-GM communicate?
> 
> Thanks!
> 
> Dan Strahs
> 
>