======  Setting up the computer environment ======

The  FCC-ee software tutorial for the [[https://www.bnl.gov/usfccworkshop/| FCC-ee BNL workshop (April 24–26, 2023)]] requires  a  SSH login to a computer with  CVMFS installed.  For SSH, use a Linux computer, or a Windows computer with WSL or PuTTY, or cygwin.

 The computer with mounted  CVMFS  should access  /cvmfs/sw.hsf.org/key4hep/.   This key4hep directory includes the C++ compiler and various external C++ libraries. If you do not plan to install the CVMFS  pointed to the CERN libraries on your personal computer, use the following interactive nodes with ssh logins:

  * ** lxplus.cern.ch** - for people associated with CERN and having the CERN computer accounts.  
  * Members from the ATLAS/CMS and other collaborations can use their Tier3 computers with  CVMFS.
  * **OSG interactive nodes**  can be used by all other participants who cannot use the options mentioned above. The OSG resource is  available for the USA participants associated with US universities and laboratories.

===== How  to get the OSG account =====


 If  you are  associated with a USA institution and would like to use the OSG account, use [[ https://www.osgconnect.net/]] link to sign-up. During the sign-up, request the project **osg.FutureColliders** (Sergei Chekanov is the project PI). Then you will be explained how to obtain the account. This project typically uses the  "login05.osgconnect.net" interactive node. This note links the /cvmfs/sw.hsf.org/key4hep/ which will be needed for this tutorial.

 
//BNL FCC-ee workshop organizers//