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 nodes. setup a key for yourself ssh-keygen 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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