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changes.mady.by.user Amedeo Perazzo

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  1. The first ("NX technology") gives the user a special remote desktop that is specifically designed to improve the performance of X11 graphics over slow connection speeds (compared to ssh).  
  2. The second ("Virtual Box") allows the user to directly install the psana analysis environment on their Windows, Linux or MAC Mac machine, so that LCLS data analysis (including graphics) can be done with no network connection (click here for information on the virtual box approach).

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  1. psnxopr.slac.sstanford.edu (aka psnxserv01): for machine and beamline operators
  2. psnxana.slac.stanford.edu (aka psnxserv02): for interactive data analysis
  3. psnxserv.slac.stanford.edu (aka psnxserv03): for general purpose connections

You will be prompted to setup a login profile when launching the NoMachine for the first time. Select the following options:

Protocol: SSH
Host: psnxana.slac.stanford.edu,  Port: 22
Authentication: Use the NoMachine login (not the "system login"). Do not select 'Use an alternate server key'
Proxy: Don't use a proxy
Save as: Choose a name such as PSNXANA. You could select 'Create a link on the desktop'
Select Done to finish the setup

You can hit Connect to start the connection.

You may be asked to verify host authenticity. Hit Continue.

You will be asked to type Username and Password. Use your SLAC UNIX account and password and hit OK.

The allocation of theses servers to the various activities is just to provide a low-tech load balancing and is not enforced.

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Accept After opening a connection to one of these servers using your SLAC UNIX account, make sure to run in console mode: from the 'Custom session' dialog window, accept the default options (Application - Run the console, Options - Run the command in a floating window) by clicking Continue. 

 

For performance and reliability reasons we have disabled the ability to open a remote desktop (GNOME) on the NX servers. We plan to keep allowing only the console mode for the foreseeable future since the multiple GNOME sessions were taking too many resources on the NX servers. Let us know if you see any fundamental reason why the ability to open a remote desktop is required to do your job. 

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