using valgrind to debug LIGGGHTS code

valgrind is a very useful memory debugger which can be used to find segfaults and other memory errors.
you can run it on ubuntu by

valgrind liggghts < in.script &> LOG

this will print debugging information into the LOG file. if you compile LIGGGHTS with the '-d' flag, it will also show you the code line which causes the trouble. if running in parallel, you should use