Frequently Asked Questions -- Latest revision : 12/01/2009 -- (Q) there are many lines printed at the end of the run of Delphes. Is it an error? 55555 D0 - 20000 D0 - - 3000 (detId=900000000 Name=Delphes) - - - 3000 (detId=910000000 Name=Tracker) - - - - 41040 (detId=9100010) - - - - 41040 (detId=9100020) - - - - 41040 (detId=9100030) - - - - 41040 (detId=9100040) ... (A) no, this is normal, this is just the output of FROG, showing that everything is ok. You should find your *vis and *geom files when it has ended. (Q) I do not remember how to run FROG (A) Just run the "frog" executable in Utilities/FROG me@mylaptop:~$ cd Utilities/FROG me@mylaptop:~$ ./frog (Q) How should I know which external libraries I need for FROG ? (A) Please refer to this page on the FROG website: http://projects.hepforge.org/frog/Visualization.html you will need OpenGL, GLUT, X11-devel, Curl. For instance: OpenGL : xorg-x11-Mesa-libGL-6.8.2-1.EL.33.0.2 xorg-x11-Mesa-libGLU-6.8.2-1.EL.33.0.2 GLUT : freeglut-2.2.0-14 freeglut-devel-2.2.0-14 X11-devel : xorg-x11-devel-6.8.2-1.EL.33.0.2 CURL : libcurl (Q) FROG complains that libcurl is missing. What should I do? (A) First, make sure the libcurl library is installed on your computer. - locate it on your computer me@mylaptop:~$ locate libcurl.so /usr/lib/libcurl.so - if the library is not present, take it from the internet (http://curl.haxx.se/) or via installers like "apt-get" (ubuntu systems) or "yum" (fedora systems) - if the libcurl.so is not found, juste make a symbolic link in Utilities/FROG/Lib: me@mylaptop:~$ cd Utilities/FROG/Lib me@mylaptop:~$ ln -s /usr/lib/libcurl.so me@mylaptop:~$ ls -l libcurl.so lrwxrwxrwx 1 me me 21 Jan 7 15:19 libcurl.so -> /usr/lib/libcurl.so.4.0.1 - now it should work properly