[Nevis-linux] Upgrades to notebook server 8-Aug-2018

William Seligman seligman at nevis.columbia.edu
Wed Aug 8 15:39:34 EDT 2018


On 8/6/18 1:58 PM, William Seligman wrote:
> To the users of the Nevis Jupyter notebook server at 
> <https://notebook.nevis.columbia.edu/>:
> I plan to make some changes to the ROOT and Python versions on the notebook 
> server starting at 4PM ET on Wed 08-Aug-2018. Notebooks may be unstable for the 
> following 2-3 hours, and I may have to restart Jupyter sessions or the entire 
> notebook server during that time.
> Background:
> The three weeks between the departure of the REU students and the return of the 
> faculty for the Fall semester is my usual time for system maintenance. I'd like 
> to upgrade the version of ROOT on the notebook server to 6.14 (from 6.12), which 
> includes new features like data frames:
> <https://root.cern.ch/doc/v614/release-notes.html>
> I'd also like to take the main Python distribution to 3.6 (from 3.4). The shift 
> to Python 3.6 on the notebook server is to bring it to the same version as the 
> one in the Nevis environment modules when you type "module load python/3":
> https://twiki.nevis.columbia.edu/twiki/bin/view/Main/EnvironmentModules
> Please note: Python 2 will no longer be updated after January 1, 2020. Before 
> then, the Python software packages most often used in scientific computing will 
> drop their support for Python 2, including packages such as numpy, scipy, and 
> matplotlib:
> <http://python3statement.org/>
> I'm not going to remove Python 2 from the notebook server or the environment 
> modules (at least not until 2020), but I'm going to de-emphasize it and stop 
> keeping it up-to-date.
> If you'd like to port your Python 2 code to Python 3 and test it on the notebook 
> server, this guide may be helpful:
> <https://docs.python.org/3/howto/pyporting.html>

William Seligman          | Phone: (914) 591-2823
Nevis Labs, Columbia Univ |
PO Box 137                |
Irvington NY 10533 USA    | http://www.nevis.columbia.edu/~seligman/

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