Re: Dynamically change number of jobslots

[Stuart Anderson]

Ole pointed out this has first class support as documented in the manpage, and 
-P procfile works for me as advertised.

     --jobs procfile
     -j procfile
     --max-procs procfile
     -P procfile
         Read parameter from file. Use the content of
         procfile as parameter for -j. E.g. procfile could
         contain the string 100% or +2 or 10. If procfile is
         changed when a job completes, procfile is read again
         and the new number of jobs is computed. If the
         number is lower than before, running jobs will be
         allowed to finish but new jobs will not be started
         until the wanted number of jobs has been reached.
         This makes it possible to change the number of
         simultaneous running jobs while GNU parallel is
         running.


> On Jan 21, 2021, at 6:04 PM, Joe Sapp <sappj@ieee.org> wrote:
> 
> You could use an sshloginfile with just the localhost and the number of 
> processes. Something like this in the file:
> 4/:
> 
> Then change the number in the file and you'll change the number of jobs next 
> time a job is finished.

--
Stuart Anderson
sba@caltech.edu