Icarus 1.0 Quick Start: Difference between revisions

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== Setting up a Run ==

=== Passwordless Logins ===

First of all, to run jobs on the cluster you will need to set up passwordless <code>ssh</code> (which operates within the cluster, between the nodes running the job). To do so, run the following from your '''discover''' home directory:

cd .ssh

ssh-keygen -t ~~dsa~~

ssh-keygen -t rsa

cat ~~id_dsa~~.pub >> authorized_keys

cat id_rsa.pub >> authorized_keys

Similarly, transferring the daily output files (in monthly tarballs) requires passwordless authentication from '''discover''' to '''dirac'''. While in <code>~/.ssh</code> on '''discover''', run

ssh-keygen -t ~~dsa~~

ssh-keygen -t rsa

Then, log into '''dirac''' and cut and paste the contents of the <code>id_rsa.pub</code> file on '''discover''' into the <code>~/.ssh/authorized_keys</code> file on '''dirac'''. Problems with <code>ssh</code> should be referred to NCCS support.

==== DSA Keys ====

Note: Due to evolution of security, it is recommended to not use DSA keys. NAS currently doesn't not allow them, and RSA and ED25519 keys are considered "better" anyway.

Then, log into '''dirac''' and cut and paste the contents of the <code>id_rsa.pub</code> and <code>id_dsa.pub</code> files on '''discover''' into the <code>~/.ssh/authorized_keys</code> file on '''dirac'''. Problems with <code>ssh</code> should be referred to NCCS support.

=== Setting up a model run ===

To set the model up to run, cd to <code>GEOSagcm/src/Applications/GEOSgcm_App</code> and run:

@@ Line 70: / Line 70: @@
 == Setting up a Run ==
+=== Passwordless Logins ===
 First of all, to run jobs on the cluster you will need to set up passwordless <code>ssh</code> (which operates within the cluster, between the nodes running the job).  To do so, run the following from your '''discover''' home directory:
   cd .ssh
-  ssh-keygen -t dsa
+  ssh-keygen -t rsa
-  cat id_dsa.pub >>  authorized_keys
+  cat id_rsa.pub >>  authorized_keys
 Similarly, transferring the daily output files (in monthly tarballs) requires passwordless authentication from '''discover''' to '''dirac'''.  While in <code>~/.ssh</code> on '''discover''', run
-   ssh-keygen -t dsa
+   ssh-keygen -t rsa
+Then, log into  '''dirac''' and cut and paste the contents of the <code>id_rsa.pub</code> file on '''discover''' into the  <code>~/.ssh/authorized_keys</code> file on   '''dirac'''.  Problems with <code>ssh</code> should be referred to NCCS support.
+==== DSA Keys ====
+Note: Due to evolution of security, it is recommended to not use DSA keys. NAS currently doesn't not allow them, and RSA and ED25519 keys are considered "better" anyway.
-Then, log into  '''dirac''' and cut and paste the contents of the <code>id_rsa.pub</code> and <code>id_dsa.pub</code> files on '''discover''' into the  <code>~/.ssh/authorized_keys</code> file on   '''dirac'''.  Problems with <code>ssh</code> should be referred to NCCS support.
+=== Setting up a model run ===
 To set the model up to run, cd to <code>GEOSagcm/src/Applications/GEOSgcm_App</code> and run: