$ man parallel | grep -A24 ^REPORTING\ BUGS
REPORTING BUGS
Your bug report should always include:
· The error message you get (if any).
· The complete output of parallel --version. If you are not running the latest released version you should specify why you believe the problem is not fixed in that version.
· A complete example that others can run that shows the problem. This should preferably be small and simple. A combination of yes, seq, cat, echo, and sleep can reproduce most errors. If your example requires
large files, see if you can make them by something like seq 1000000 > file or yes | head -n 10000000 > file. If your example requires remote execution, see if you can use localhost - maybe using another login.
· The output of your example. If your problem is not easily reproduced by others, the output might help them figure out the problem.
parallel - search for EXAMPLE:).
Specifying the name of your distribution is not enough as you may have installed software that is not in the VirtualBox images.
If you cannot reproduce the error on any of the VirtualBox images above, see if you can build a VirtualBox image on which you can reproduce the error. If not you should assume the debugging will be done through
you. That will put more burden on you and it is extra important you give any information that help. In general the problem will be fixed faster and with less work for you if you can reproduce the error on a
VirtualBox.