Hello, As discoursed on IRC, I am trying to develop a parser for Jitviewer, that is not dependent on rpython for my first patch. I am new to Pypy and I would like to get some help/pointer that would help me accomplish this task. Mainly resources on how log files are generated. I would also like to get more details on what improvements are to be done with respect Jitviewer, for GSOC 2016, as application are about to start. So far in trying to generate a log file, I have tried the following commands; PYPYLOG=jit-backend:/home/konro/jitviewer/logfile pypy ../source.py (to generate the log file) and I got the following output http://pastebin.com/xv7nS1i2 But when I try to view the file with Jitviewer, I get errors http://pastebin.com/LFBB12sj Please I need some help to identify what I am doing wrong. Thanks Konrad