[mpich-discuss] MPI_Comm_connect and firewall

[Robert Kubrick]

Thanks. I don't understand why the port name has to be so long and  
complicate. This is what I have on my server machine:

Processor 0 (19011, Receiver) initialized
Processor 0 opened port tag#0$port#61162$description#192.168.2.1 
$ifname#192.168.2.1$
Publishing port tag#0$port#61162$description#192.168.2.1 
$ifname#192.168.2.1$ as service myfriend-0
Processor 0 waiting for connections on tag#0$port#61162 
$description#192.168.2.1$ifname#192.168.2.1$, service myfriend-0...

So unless I use the name service through MPI_Lookup_name (which I  
doubt works on remote connections), I have to enter 'tag#0$port#61162 
$description#192.168.2.1$ifname#192.168.2.1$' on the client as the  
port name to connect to the MPI server.
Or am I missing something?

On Sep 9, 2008, at 4:40 AM, Rajeev Thakur wrote:

> Try setting the environment variable MPICH_PORT_RANGE to min:max to  
> indicate the port range.
>
>
> Robert Kubrick wrote:
>> I need to connect an MPI program to a server behind a firewall,  
>> using MPI_Comm_connect. How can I configure the IP port that  
>> MPI_Open_port should use on the server?
>> So for port:
>> tag#0$port#57718$description#192.168.2.1$ifname#192.168.2.1$
>> How can I change 57718 to another port authorized for remote  
>> connection?
>