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Re: mpirun problem

On Wed, May 13, 2009 at 12:27:49AM +0300, Eftaxiopoulos Dimitrios wrote:
> Hello,
> I have a laptop with a 4 core CPU (CPU0, CPU1, CPU2, CPU3), running 
> unstable/amd64. I want to run an executable in parallel, on all 4 cores in my 
> machine. When I type
> mpirun -np 4 executable_name
> I get the message:
> ssh: connect to host my_machine_name port 22: Connection refused                             

this is the key here, mpirun is using ssh to connect to the compute

setup a key for yourself 


and then copy it to the compute node (your laptop), using the same name
that you have setup in mpirun

ssh-copy-id <name>

> --------------------------------------------------------------------------            
> A daemon (pid 23383) died unexpectedly with status 255 while attempting               
> to launch so we are aborting.                                                         
> There may be more information reported by the environment (see above).
> This may be because the daemon was unable to find all the needed shared
> libraries on the remote node. You may set your LD_LIBRARY_PATH to have the
> location of the shared libraries on the remote nodes and this will
> automatically be forwarded to the remote nodes.
> --------------------------------------------------------------------------
> --------------------------------------------------------------------------
> mpirun noticed that the job aborted, but has no info as to the process
> that caused that situation.
> --------------------------------------------------------------------------
> mpirun: clean termination accomplished
> Any suggestion?
> Dimitris

The door is the key.

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