From: "Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org>
Subject: Re: Large number of tasks slows down my program (using debian) - any fix?
Date: Thu, 5 Apr 2018 22:25:20 +0200
Date: 2018-04-05T22:25:20+02:00 [thread overview]
Message-ID: <pa60ng$td4$1@dont-email.me> (raw)
In-Reply-To: <ly1sfto2ur.fsf@pushface.org>
On 04/05/2018 09:44 PM, Simon Wright wrote:
> "Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org> writes:
>
>> On 04/05/2018 04:07 PM, Brad Moore wrote:
>>>
>>> The problem there is to create 503 tasks, and then use some sort of
>>> message passing to pass a "token" in a ring from from task to the
>>> next, 50_000_000 times, printing out the task number that ended up
>>> with the token at the end.
>>
>> Isn't the answer always 291?
>
> In the three I looked at the answer was 292.
I guess it depends on where the token starts. If it starts outside the ring and
is 1st passed to task 1, the answer is 291. If it starts in task 1 and is 1st
passed to task 2, the answer is 292. I think.
--
Jeff Carter
"Sir Lancelot saves Sir Gallahad from almost certain temptation."
Monty Python & the Holy Grail
69
next prev parent reply other threads:[~2018-04-05 20:25 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-28 18:06 Large number of tasks slows down my program (using debian) - any fix? reinert
2018-03-28 18:49 ` Dennis Lee Bieber
2018-03-28 19:06 ` Paul Rubin
2018-03-28 19:21 ` Dmitry A. Kazakov
2018-03-28 20:17 ` reinert
2018-03-29 8:46 ` reinert
2018-03-29 9:18 ` Dmitry A. Kazakov
2018-03-29 15:39 ` Jeffrey R. Carter
2018-04-15 5:20 ` reinert
2018-03-29 22:33 ` Shark8
2018-03-30 9:04 ` Dmitry A. Kazakov
2018-03-30 20:46 ` Paul Rubin
2018-03-31 0:09 ` Randy Brukardt
2018-03-31 6:00 ` Paul Rubin
2018-03-31 9:37 ` Jacob Sparre Andersen
2018-03-31 10:44 ` Dmitry A. Kazakov
2018-04-02 3:35 ` Randy Brukardt
2018-04-02 6:23 ` alby.gamper
2018-04-02 7:12 ` alby.gamper
2018-04-05 14:07 ` Brad Moore
2018-04-05 15:09 ` Dmitry A. Kazakov
2018-04-07 4:16 ` Brad Moore
2018-04-05 15:30 ` Jeffrey R. Carter
2018-04-05 19:33 ` Spiros Bousbouras
2018-04-05 19:44 ` Simon Wright
2018-04-05 20:25 ` Jeffrey R. Carter [this message]
2018-04-06 5:58 ` Benchmarks Game: Thread ring (Was: Large number of tasks slows down my program (using debian) - any fix?) Jacob Sparre Andersen
2018-04-07 4:28 ` Brad Moore
2018-04-06 15:48 ` Large number of tasks slows down my program (using debian) - any fix? Jeffrey R. Carter
2018-04-07 4:39 ` Brad Moore
2018-04-07 8:15 ` Jeffrey R. Carter
2018-04-07 16:28 ` Brad Moore
2018-04-07 18:41 ` Jeffrey R. Carter
2018-04-08 0:29 ` Brad Moore
2018-04-08 8:25 ` Jeffrey R. Carter
2018-04-08 0:06 ` Robert I. Eachus
2018-04-07 16:51 ` Brad Moore
2018-04-07 12:21 ` Simon Wright
2018-04-07 16:57 ` Brad Moore
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