Editing CU Research Computing (section)

= Logging in =

Put these settings in your <tt>~/.ssh/config</tt> file so you only have to enter your OTP once per session, instead of for every ssh connection you make
<pre>
# These rules only apply for connections to login.rc.colorado.edu
Host login.rc.colorado.edu
# Setup a master ssh session the first time, and subsequent times
# use the existing master connection
ControlMaster auto
ControlPath ~/.ssh/%r@%h:%p
# X forwarding. Remove this on a Mac if you
# don't want it to start X11 each time you
# connect to RC
ForwardX11 yes
# Compress the data stream.
Compression yes
# Send keep alive packets to prevent disconnects from
# CU wireless and behind NAT devices
ServerAliveInterval 60
</pre>

These settings should work from Mac and Linux. I'm not sure how to do the equivalent from Windows with Putty. On a Mac, those settings will cause X11 to start. If you don't want that to happen, then remove the <tt>ForwardX11 yes</tt> line.

For those with access to summit (ONLY!), here are the steps to using it:
<pre>
#From a login node:
ssh -YC <uname>@shas07{01-15}

#In your shell script:
No need to include -A UCB00000442
 --partition=shas

#To run R:
ml load R
ml load gcc
R
</pre>