[MPICH] Re: Using MPICH2 on different ports

[Matt Valerio]

Ok, let me try to simplify the question.

Does smpd need to run on the same port on all computers?
Can I tell mpiexec that it needs to connect to all of the smpd computers on
different ports?

I know that the machine config file can specify different computers, but the
same port.  I am just curious if the machine config file can specify
different computers as well as different ports.

Any help would be greatly apppreciated.  Thanks!
-Matt



On 4/16/07, Matt Valerio <matt.valerio at gmail.com> wrote:
>
> Hello MPICH2 users,
>
> I am wondering if there is a way to instruct mpiexec to use multiple
> computers running smpd on different ports.
>
> For example, I have 10 computers behind a firewall.  Each of those 10
> computers is running smpd on the same port (let's say 8000).
> I want to put rules into a firewall computer that maps an
> externally-available port to the specific computer
>
> firewall:8001 ----(maps to)----------> computer1:8000
> firewall:8002 ----(maps to)----------> computer2:8000
> ...
> firewall:8010 ----(maps to)----------> computer10:8000
>
> Then in the machine configuration file, I need to be able to tell mpiexec
> that it can use the same computer but different ports (8000-8010), like
>
> firewall:8001
> firewall:8002
> ...
> firewall:8010
>
> etc.
>
> Is this currently possible?  I know the machine file format is wrong
> because the number after the colon specifies the number of processes, not
> the port number.
>
> Does anyone have any ideas as to whether this kind of thing could work?
> Is there a better way?  Any help would be greatly appreciated.
>
> Thanks!
> -Matt
>
>
>
>
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