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Hall A/C Software and Computing Studies for Kaon LT and DVCS

Salina Ali & Callum Walton

Network Server Setup at CUA

To-do

Setup master server

Install CentOS7 (open source)
Install root 6.10.06 (most recent version)
Install PODD software: analyzer 1.6.3 (most recent version) for Hall A and Hall C in different build directories

Link for Hall A analyzer 1.6.3 Redmine pg, install '.gz' format and untar.
Link for Hall C analyzer 1.6.3 Redmine pg, install '.gz' format and untar.

Create a "setup" script like gohana and gohcana with correct environment variables set in path

Have local root files available either on own computer or file servers to test network server communication with readability

Building and using root 6.10.06 on Linux CentOS7 (Salina)

ROOT is a software used in experimental nuclear physics for data analysis and is C++ based. For more info go here. The commands in this section are written in terminal after the $, so don't type the $ while typing your command in the terminal.

You can download root two ways: from pre-compiled binaries suited for your OS, or using cmake and building root from the source code. For the source code and pre-compiled binaries go to: root version 6.12.06. These instructions are for the installation from the source.
Either install the source code (.tar.gz) or use "git clone" to clone the root repository to your directory
In your terminal, first go to your /usr/local/ directory by doing $ cd /usr/local/
Then do $ git clone http://github.com/root-project/root.git
Then go to root directory in /usr/local like $ cd root
Then do $ git checkout -b v6-12-06 v6-12-06

Remember to name the unpacked source file, like root6-12 or whatever, so you wont get confused with other versions or the build directory later.. do this anyway if you don't.
This "root6-12" is a directory with all the cmake stuff in it, which will be used to build the source.

Now you need to make a build directory in /usr/local/ by doing $ mkdir build

Since you are trying to compile and link the "build" directory to the source, you need this other build directory. This will look like /usr/local/build/

Now go to your build directory if you weren't already in it $ cd /usr/local/build/ and link to root via cmake by $ cmake /path/to/source/ or $ cmake /usr/local/root/

Note: if your source isn't in a directory named "root" then change it to the source directory name e.g. if it was named root6-12-06 then do $ cmake /usr/local/root6-12-06/

Now build it by $ cmake --build . -- -jN

where N is the number of cores available to speed up the building. This will take a while regardless of the short cut.

After the install is done, and nothing is broken/no error messages, test if root is working by going to your build directory and doing

(for bash shell) $ . bin/thisroot.sh
(for csh shell) $ source /usr/local/build/bin/thisroot.sh

Start a root interactive session by doing $ root
You should probably change the directory name of "build" to root6.12.06 or just root. So now root will be in /usr/local/root/ or /usr/local/root6.12.06
For a more permanent change, edit the login file, either .bash_profile on Mac OS X or .bashrc on linux by doing

For text editor vim: vim ~/.bash_profile OR vim ~/.bashrc
For text editor emacs: emacs ~/.bash_profile OR emacs ~/.bashrc

Then add the lines, usually toward the bottom (applies to both bash_profile on mac and linux):

$ export ROOTSYS=/usr/local/root $ export PATH=$ROOTSYS/bin:$PATH $ export PYTHONDIR=$ROOTSYS/bindings/pyroot

Installing analyzer

https://hallcweb.jlab.org/wiki/index.php/ROOT_Analyzer/Compiling

Computing using PODD/Hall A & C analyzer

Link for information for Hall C Analyzer: hcana info Link for information for Hall A analyzer: Hall A analyzer info

Computing Workshop at JLab from June 25-26, 2018: Hall A/C Computing Workshop Info and Registration

@@ Line 29: / Line 29: @@
 * Then go to root directory in /usr/local like $ cd root
 * Then do $ git checkout -b v6-12-06 v6-12-06
-:* Remember to name the unpacked source file, like root-6-12 or whatever, so you wont get confused with other versions or the build directory later.. do this anyway if you don't.
+:* Remember to name the unpacked source file, like root6-12 or whatever, so you wont get confused with other versions or the build directory later.. do this anyway if you don't.
-:* The "root" or "root-6.12.06" is a directory with all the cmake stuff in it, which will be used to build the source.
+:* This "root6-12" is a directory with all the cmake stuff in it, which will be used to build the source.
 * Now you need to make a build directory in /usr/local/ by doing $ mkdir build
 :* Since you are trying to compile and link the "build" directory to the source, you need this other build directory. This will look like /usr/local/build/
 * Now go to your build directory if you weren't already in it $ cd /usr/local/build/ and link to root via cmake by $ cmake /path/to/source/ or $ cmake /usr/local/root/
 :* Note: if your source isn't in a directory named "root" then change it to the source directory name e.g. if it was named root6-12-06 then do $ cmake /usr/local/root6-12-06/
-* Now build it: $ cmake --build . -- -jN
+* Now build it by $ cmake --build . -- -jN
 :* where N is the number of cores available to speed up the building. This will take a while regardless of the short cut.
 * After the install is done, and nothing is broken/no error messages, test if root is working by going to your build directory and doing