Re: --load question

[Ole Tange]

100% is (as Joe says) computed as it is for --jobs.

The load average is computed as:

    ps ax -o state,command|grep '^R'| wc -l

This is basically 5 min average, but for this second only. This is to
make sure that when GNU Parallel starts a job, the load will increase
by one.

/Ole

On Tue, Feb 8, 2022 at 2:42 AM Joe Sapp <sappj@ieee.org> wrote:
>
> See the man page description for "--use-sockets-instead-of-threads" and 
> "--use-cores-instead-of-threads".  I believe GNU Parallel counts the number 
> of processes running and uses that information to match what you specify.  By 
> default it's the number of hyperthreaded cores available.
>
> Joe
>
> On Sat, Feb 5, 2022 at 9:23 AM Neal Becker <ndbecker2@gmail.com> wrote:
>>
>> Newb here.  I want to schedule a bunch of tasks > #cores.  Let's say I want 
>> to run #cores at a time (100% utilization).
>>
>> If I do
>> seq 1 1000 | parallel --load 100% blah blah...
>>
>> What is the load that is being looked at?  A 5 minute load average?  So at 
>> the time I start this 1000 tasks, loadave is 0 (say), will it start all 1000 
>> tasks at once, because loadave is 0 - only to have loadave become 1000?  Or 
>> does it do something smarter than that?
>>
>> Thanks,
>> Neal
>>
>> --
>> Those who don't understand recursion are doomed to repeat it