Re: Cannot specify the number of threads for parsort

[Rob Sargent]

On 2/10/23 16:06, Ole Tange wrote:

> On Thu, Feb 9, 2023 at 3:30 PM Mario Roy <marioeroy@gmail.com> wrote:
> :
> > This is a wish list for allowing one to specify the number of threads via an ENVIRONMENT variable that works consistently using parallel or parsort. Basically, I want to specify the number of threads for parsort regardless of processing files specified via command-line arguments or STDIN.
> >       
> You can use taskset:
>
> taskset -c 1-5 parallel --number-of-threads
>
> (parsort uses parallel --number-of-threads).
>
> For parallel you might also use PARALLEL=-j5
>
> Can you explain why you need this? To me it seems odd not to use all
> the cores you paid for.
>
>
> /Ole
>
>     
    I'm guessing OP is on
      shared hardware (either with OP's own jobs or with other users). 
    There's a current phobia of having a machine actually using all it's
    cores and a misconception that the users can do a better job of
    scheduling than the scheduler!