another minor: rename document

manual/build_notes/ubuntu_22.04/README.md

@@ -0,0 +1,120 @@
+# Ubuntu 22.04LTS
+Christoph Lechner, European XFEL, 2024-06-25
+
+Starting with a fresh "normal installation" of Ubuntu 22.04LTS (DVD image: `ubuntu-22.04.4-desktop-amd64.iso`).
+
+Installing the following packages and their dependencies:
+
+```
+sudo apt-get install build-essential
+sudo apt-get install cmake
+sudo apt-get install git
+sudo apt-get install libopenmpi-dev
+sudo apt-get install libhdf5-openmpi-dev
+sudo apt-get install pkg-config
+```
+
+In the directory, you can find the output of `dpkg -l`, listing all installed software packages.
+
+Now, clone "Genesis 1.3" from the git repository.
+One can compile "Genesis 1.3" as described in the manual.
+
+After the preparation phase, the output of `cmake` is the following:
+```
+cl@ubuntu-test:~/g4/Genesis-1.3-Version4$ mkdir build
+cl@ubuntu-test:~/g4/Genesis-1.3-Version4$ cd build
+cl@ubuntu-test:~/g4/Genesis-1.3-Version4/build$ cmake -DCMAKE_BUILD_TYPE=Release ..
+-- The CXX compiler identification is GNU 11.4.0
+-- The C compiler identification is GNU 11.4.0
+-- Detecting CXX compiler ABI info
+-- Detecting CXX compiler ABI info - done
+-- Check for working CXX compiler: /usr/bin/c++ - skipped
+-- Detecting CXX compile features
+-- Detecting CXX compile features - done
+-- Detecting C compiler ABI info
+-- Detecting C compiler ABI info - done
+-- Check for working C compiler: /usr/bin/cc - skipped
+-- Detecting C compile features
+-- Detecting C compile features - done
+-- h5pcc not found - looking for basic compiler
+-- C++ Compiler: /usr/bin/c++
+-- C Compiler: /usr/bin/cc
+-- Found MPI_C: /usr/lib/x86_64-linux-gnu/openmpi/lib/libmpi.so (found version "3.1") 
+-- Found MPI_CXX: /usr/lib/x86_64-linux-gnu/openmpi/lib/libmpi_cxx.so (found version "3.1") 
+-- Found MPI: TRUE (found version "3.1")  
+-- MPI Found
+-- Found HDF5: /usr/lib/x86_64-linux-gnu/hdf5/openmpi/libhdf5.so;/usr/lib/x86_64-linux-gnu/libcrypto.so;/usr/lib/x86_64-linux-gnu/libcurl.so;/usr/lib/x86_64-linux-gnu/libsz.so;/usr/lib/x86_64-linux-gnu/libz.so;/usr/lib/x86_64-linux-gnu/libdl.a;/usr/lib/x86_64-linux-gnu/libm.so (found version "1.10.7")  
+-- HDF5 Found
+-- Version: 1.10.7
+-- Parallel HDF5 supported
+-- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.2") 
+-- FFTW not found
+-- Excluding FFTW specific source code
+-- Build Info:
+-- C++ Compiler: /usr/bin/c++
+-- C Compiler: /usr/bin/cc
+-- CMAKE_C_FLAGS: 
+-- CMAKE_CXX_FLAGS: '-lstdc++'
+-- Used libraries: MPI::MPI_C;HDF5::HDF5
+-- Configuring done
+-- Generating done
+-- Build files have been written to: /home/cl/g4/Genesis-1.3-Version4/build
+```
+
+Now, starting the build process:
+```
+cl@ubuntu-test:~/g4/Genesis-1.3-Version4/build$ make
+[  1%] Generating include/version.h, ALL
+-- Git hash is 2d5ad07183746a26637920dba794b76aafea2fa7
+[  1%] Built target get_git_hash
+[  3%] Building CXX object CMakeFiles/genesis13.dir/src/Util/BesselJ.cpp.o
+[..]
+[ 96%] Built target genesis13
+[ 98%] Building CXX object CMakeFiles/genesis4.dir/src/Main/mainwrap.cpp.o
+[100%] Linking CXX executable genesis4
+[100%] Built target genesis4
+cl@ubuntu-test:~/g4/Genesis-1.3-Version4/build$
+```
+
+
+Modifying `Example3.in` file to reduce the resource footprint (the virtual PC only has 4 CPU cores and a total of 16GBytes of RAM):
+```
+diff --git a/examples/Example3-TimeDependent/Example3.in b/examples/Example3-TimeDependent/Example3.in
+index d39ddaf..9ceed2c 100644
+--- a/examples/Example3-TimeDependent/Example3.in
++++ b/examples/Example3-TimeDependent/Example3.in
+@@ -19,7 +19,7 @@ zmatch=9.5
+ 
+ &time
+ slen = 20e-6
+-sample = 3
++sample = 10
+ &end
+ 
+ &profile_gauss
+@@ -38,7 +38,7 @@ c1=1e7.
+ &field
+ power=0
+ dgrid=2.000000e-04
+-ngrid=255
++ngrid=101
+ waist_size=30e-6
+ &end
+ 
+@@ -52,5 +52,6 @@ ey=4.000000e-07
+ 
+ &track
+ output_step=3
++zstop=0.5
+ &end
+```
+
+Running modified Example3 on the virtual PC:
+```
+cl@ubuntu-test:~/g4/Genesis-1.3-Version4/examples/Example3-TimeDependent$ mpirun -np 4 /home/cl/g4/Genesis-1.3-Version4/build/genesis4 Example3.in
+```
+As one can see in the screenshot, there are 4 processes of `genesis4`, each one at 100% CPU load.
+
+After running the simulation, you may want to explore the generated HDF5 output files, for instance using `h5ls`. For this you need to install the package `hdf5-tools`.
+
+