Is this the correct way to consider scheduling? Is there a better way to
structure the distribution of this execution?
Ak
NB. Simulated long running tasks, of variable execution length.
] wrk_prcs =: ([: < (1 ? [) A. ([: i. ]))"0 0
] x=. 90 31 235 77 83 99 17 62 122 23
] y=. 12 4 _17 8 5 _8 9 6 15 _4
NB. The solution pyx look like this:
(x wrk_prcs y)
] notional_work_list =: ,.<;._1
',(<(1?90)A.(i.12)),(<(1?31)A.(i.4)),(<(1?235)A.(i._17)),(<(1?77)A.(i.8)),(<(1?83)A.(i.5)),(<(1?99)A.(i._8)),(<(1?17)A.(i.9)),(<(1?62)A.(i.6)),(<(1?122)A.(i.15)),(<(1?23)A.(i._4))
'
] Exec_sched_form1 =. 2 1": ((<'Tasks'),(<'Executing Threadpool'
)),(notional_work_list) ,."2 (,.10 $ <"_1 ( 1 +i.4))
NB. Execution is pre-assigned to threadpools. Intermediate results are
locked from a calling tabulation task.
NB. The Final tabulation task executes when each pool has signaled that all
of its assigned tasks are complete.
] Exec_sched_form2 =. 2 1": ((<'Tasks'),(<'Executing Threadpool'
)),(notional_work_list) ,."2 (,.<"_1(1),(2),(3),(4),(_),(_),(_),(_),(_),(_))
NB. Threadpools are initialized with an execution task (passed a task). By
Thread configuration, on completion of
NB. an execution, the worker checks for remaining tasks (from the
Work_List). If there are no remaining tasks, the pool destroyed.
NB. If there are remaining tasks, the task is locked and executed by the
worker. This series repeats to completion.
NB. When signaled the final tablution task is executed.
On Thu., Jan. 5, 2023, 03:40 Ak O, <akin...@gmail.com> wrote:
>
>
> NB. Simulated long running tasks, of variable execution length.
>
> ] wrk_prcs =: ([: < (1 ? [) A. ([: i. ]))"0 0
>
> ] x=. 90 31 235 77 83 99 17 62 122 23
> ] y=. 12 4 _17 8 5 _8 9 6 15 _4
>
> NB. The solution pyx look like this:
>
> (x wrk_prcs y)
>
> ] notional_work_list =: ,.<;._1
> ',(<(1?90)A.(i.12)),(<(1?31)A.(i.4)),(<(1?235)A.(i._17)),(<(1?77)A.(i.8)),(<(1?83)A.(i.5)),(<(1?99)A.(i._8)),(<(1?17)A.(i.9)),(<(1?62)A.(i.6)),(<(1?122)A.(i.15)),(<(1?23)A.(i._4))
> '
>
>
> ] Exec_sched_form1 =. 2 1": ((<'Tasks'),(<'Executing Threadpool'
> )),(notional_work_list) ,."2 (,.10 $ <"_1 ( 1 +i.4))
>
> NB. Execution is pre-assigned to threadpools. Intermediate results are
> locked from a calling tabulation task.
> NB. The Final tabulation task executes when each pool has signaled that
> all of its assigned tasks are complete.
>
>
> ] Exec_sched_form2 =. 2 1": ((<'Tasks'),(<'Executing Threadpool'
> )),(notional_work_list) ,."2
> (,.<"_1(1),(2),(3),(4),(_),(_),(_),(_),(_),(_))
>
> NB. Threadpools are initialized with an execution task (passed a task). By
> Thread configuration, on completion of
> NB. an execution, the worker checks for remaining tasks (from the
> Work_List). If there are no remaining tasks, the pool destroyed.
> NB. If there are remaining tasks, the task is locked and executed by the
> worker. This series repeats to completion.
> NB. When signaled the final tablution task is executed.
>
>
>
> Ak
>
>
> On Wed., Jan. 4, 2023, 22:14 Raul Miller, <rauldmil...@gmail.com> wrote:
>
>> It's also worth noting that threads do not spin down immediately --
>> they only spin down when they're idle.
>>
>> And, as you have noted it's basically a stack of threads.
>>
>> So what you'd have to do is spin down as many threads as necessary to
>> eliminate the thread you wish to eliminate and then spin back up the
>> threads which you wish to remain.
>>
>> Or, shut down J completely and initialize a new instance of J with
>> your desired thread pool structure.
>>
>> (That said... why would you want to restructure your thread pools like
>> this?)
>>
>> --
>> Raul
>>
>> On Wed, Jan 4, 2023 at 8:33 PM Ak O <akin...@gmail.com> wrote:
>> >
>> > In a case where,
>> > {{0 T. 2}}''
>> > {{0 T. 4}}''
>> > {{0 T. 7}}''
>> >
>> > How do I spin down the thread in pool number 4?
>> >
>> > I think operation,
>> > {{55 T. ''}}
>> > spins down only the most recently created thread.
>> >
>> >
>> > Thank you Henry.
>> >
>> > Ak
>> >
>> >
>> >
>> > On Wed., Jan. 4, 2023, 16:29 Henry Rich, <henryhr...@gmail.com> wrote:
>> >
>> > > Yes, that's right.
>> > >
>> > > Henry
>> > > On 1/4/
>> >
>> > Rich
>> >
>> > 2023 6:11 PM, Ak O wrote:
>> > > > Happy New Year,
>> > > >
>> > > > I hope you are all well.
>> > > >
>> > > > I am still struggling, please continue to have patience with me.
>> > > >
>> > > >
>> > > > Where,
>> > > > {{0 T. ''}}''
>> > > > creates a new thread.
>> > > >
>> > > > Does this,
>> > > > {{0 T. 7}}''
>> > > > create a new thread in pool number 7? Or how is this function
>> treated?
>> > > >
>> > > > Thank you,
>> > > >
>> > > > Ak
>> > > >
>> ----------------------------------------------------------------------
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>> http://www.jsoftware.com/forums.htm
>> > >
>> > > ----------------------------------------------------------------------
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>> http://www.jsoftware.com/forums.htm
>> > >
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>> ----------------------------------------------------------------------
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>>
>
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