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Cluster Computer Day 2 by paulmoon410

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· @paulmoon410 ·
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Cluster Computer Day 2
<center>![](https://images.ecency.com/DQmQBwSxoLy1KGehgubS4dmQYV9JWJAHQdw3Y1qxGfNKxMB/1717382555961.jpg)</center>

This is where I'm at currently...so close.

````html 

mpirun -np 8 -hostfile ~/mpi_hosts ./mpi_program
ssh: Could not resolve hostname master: Name or service not known
--------------------------------------------------------------------------
ORTE was unable to reliably start one or more daemons.
This usually is caused by:

* not finding the required libraries and/or binaries on
  one or more nodes. Please check your PATH and LD_LIBRARY_PATH
  settings, or configure OMPI with --enable-orterun-prefix-by-default

* lack of authority to execute on one or more specified nodes.
  Please verify your allocation and authorities.

* the inability to write startup files into /tmp (--tmpdir/orte_tmpdir_base).
  Please check with your sys admin to determine the correct location to use.

*  compilation of the orted with dynamic libraries when static are required
  (e.g., on Cray). Please check your configure cmd line and consider using
  one of the contrib/platform definitions for your system type.

* an inability to create a connection back to mpirun due to a
  lack of common network interfaces and/or no route found between
  them. Please check network connectivity (including firewalls
  and network routing requirements).
--------------------------------------------------------------------------
--------------------------------------------------------------------------
ORTE does not know how to route a message to the specified daemon
located on the indicated node:

  my node:   raspberry
  target node:  slave1

This is usually an internal programming error that should be
reported to the developers. In the meantime, a workaround may
be to set the MCA param routed=direct on the command line or
in your environment. We apologize for the problem.
--------------------------------------------------------------------------




$ cd ~/.ssh


Next step is to copy to all the slave computers.

After installing SSH on all nodes.
👍  , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,
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vote details (38)
@arc7icwolf.byte ·
Hope to see you succeed in this challenge!

Curated by @arc7icwolf.byte for the #LearnToCode community. 
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