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Re: GNU Parallel Bug Reports Issue with invoking multiple parallel insta
Re: GNU Parallel Bug Reports Issue with invoking multiple parallel instances
Mon, 5 Jun 2017 16:47:14 +0200
On Fri, May 26, 2017 at 6:05 PM, Aditya Kommajosula <address@hidden> wrote:
> I have a job script which calls GNU Parallel for parallel execution, which
> is followed by some serial code, after which GNU parallel is invoked again
> (to run parallel commands different than the first parallel call). I use the
> '--sshloginfile' option on both instances of the GNU Parallel calls, and I
> encounter an error at the second call:
> parallel: Error: Cannot open loginFile
Please follow this:
Report bugs to <address@hidden> or
See a perfect bug report on
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 (see
http://ftp.gnu.org/gnu/parallel/) you should specify
why you believe the problem is not fixed in that
· A minimal, complete, and verifiable example (See
description on http://stackoverflow.com/help/mcve).
It should be a complete example that others can run
that shows the problem including all files needed to
run the example. This should preferably be small and
simple, so try to remove as many options as possible.
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.
· Whether you have watched the intro videos
walked through the tutorial (man parallel_tutorial),
and read the EXAMPLE section in the man page (man
parallel - search for EXAMPLE:).
If you suspect the error is dependent on your
environment or distribution, please see if you can
reproduce the error on one of these VirtualBox images:
Specifying the name of your distribution is not enough
as you may have installed software that is not in the
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
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