From: Florian Weimer <fw@deneb.enyo.de>
Subject: Re: C versus Ada (once again :-)), was: Re: F-22 ADA Programming
Date: Tue, 04 Nov 2014 16:50:13 +0100
Date: 2014-11-04T16:50:13+01:00 [thread overview]
Message-ID: <87389z3qyy.fsf@mid.deneb.enyo.de> (raw)
In-Reply-To: m3apnf$ckb$1@dont-email.me
* G. B.:
> On 04.11.14 14:42, Florian Weimer wrote:
>> The main challenge is to expose weaker (and therefore more efficient)
>> synchronization primitives.
>
> In view of the work on parallel loops of current Ada
> standardization: what algorithms will remain as
> not expressible with the help of parallel loops?
Anything that merely updates some global datastructure instead
processing large chunks of it, e.g., a storage pool, or a concurrent
hash table used for session IDs in a multi-threaded server
application.
> So that they will need more than Volatile and a fast
> Suspension_Object in order to be just as efficient?
No, for large multiprocessors, you need weaker ordering constraints (I
think Ada's signaling between tasks implies sequentially consistent
ordering, which is the most expensive variant), and it's best to avoid
suspension objects and other heavyweight synchronization primitives as
far as possible.
next prev parent reply other threads:[~2014-11-04 15:50 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-26 18:31 F-22 ADA Programming nathandsash
2014-10-26 19:02 ` Martyn Pike
2014-10-26 21:20 ` David Botton
2014-10-26 23:24 ` Jeffrey Carter
2014-10-26 23:55 ` David Botton
2014-11-14 22:54 ` rriehle
2014-11-14 23:46 ` Dennis Lee Bieber
2014-11-15 6:43 ` wilson
2014-11-15 17:49 ` Jeffrey Carter
2014-11-15 21:28 ` Maciej Sobczak
2014-11-16 9:57 ` Jean François Martinez
2014-11-16 22:26 ` Maciej Sobczak
2014-11-17 0:33 ` Jean François Martinez
2014-10-27 0:13 ` Robert A Duff
2014-10-27 0:31 ` David Botton
2014-10-27 10:17 ` Georg Bauhaus
2014-10-27 10:47 ` J-P. Rosen
2014-10-27 15:06 ` Adam Beneschan
2014-10-27 22:32 ` Randy Brukardt
2014-10-27 6:28 ` Pascal Obry
2014-10-27 15:04 ` Adam Beneschan
2014-10-27 15:17 ` Björn Lundin
2014-10-27 15:41 ` Maciej Sobczak
2014-10-27 16:01 ` Robert A Duff
2014-10-27 20:16 ` Adam Beneschan
2014-10-28 8:45 ` Natasha Kerensikova
2014-10-28 11:58 ` Bill White
2014-10-28 14:56 ` Adam Beneschan
2014-10-28 19:36 ` Bill White
2014-10-28 18:29 ` Jeffrey Carter
2014-10-28 18:37 ` Adam Beneschan
2014-10-28 19:14 ` David Botton
2014-10-28 21:06 ` Jeffrey Carter
2014-10-28 21:32 ` Simon Clubley
2014-10-28 21:37 ` Adam Beneschan
2014-10-28 23:59 ` Jeffrey Carter
2014-10-29 0:34 ` Adam Beneschan
2014-10-29 5:24 ` Jeffrey Carter
2014-10-29 8:37 ` Dmitry A. Kazakov
2014-10-29 17:20 ` Jeffrey Carter
2014-10-29 20:43 ` Dmitry A. Kazakov
2014-10-29 20:55 ` Jeffrey Carter
2014-10-29 21:40 ` Georg Bauhaus
2014-10-30 8:56 ` Dmitry A. Kazakov
2014-11-08 4:52 ` Randy Brukardt
2014-11-08 8:12 ` Dmitry A. Kazakov
2014-10-30 15:38 ` Maciej Sobczak
2014-10-30 15:49 ` Alan Jump
2014-10-30 22:33 ` Dennis Lee Bieber
2014-10-30 23:13 ` Jeffrey Carter
2014-10-30 16:07 ` Bill White
2014-10-30 22:37 ` Maciej Sobczak
2014-10-31 9:41 ` Georg Bauhaus
2014-10-31 12:51 ` Brad Moore
2014-11-01 3:03 ` C versus Ada (once again :-)), was: " Simon Clubley
2014-11-01 13:35 ` Georg Bauhaus
2014-11-03 1:54 ` Simon Clubley
2014-11-03 9:42 ` Georg Bauhaus
2014-11-03 12:07 ` Luke A. Guest
2014-11-04 2:01 ` Simon Clubley
2014-11-03 14:26 ` Brian Drummond
2014-11-01 13:46 ` Maciej Sobczak
2014-11-03 2:01 ` Simon Clubley
2014-11-03 9:10 ` Maciej Sobczak
2014-11-03 12:09 ` Luke A. Guest
2014-11-03 12:40 ` Florian Weimer
2014-11-03 21:58 ` Shark8
2014-11-03 22:28 ` Dmitry A. Kazakov
2014-11-04 13:42 ` Florian Weimer
2014-11-04 15:01 ` G.B.
2014-11-04 15:50 ` Florian Weimer [this message]
2014-10-31 10:11 ` Bill White
2014-10-31 12:52 ` Maciej Sobczak
2014-11-02 15:40 ` Bill White
2014-11-02 22:23 ` Maciej Sobczak
2014-11-02 22:52 ` Peter Chapin
2014-11-03 1:36 ` Simon Clubley
2014-11-03 19:04 ` Laurent
2014-10-31 13:24 ` Jacob Sparre Andersen
2014-11-08 4:45 ` Randy Brukardt
2014-11-08 23:43 ` Shark8
2014-11-09 8:39 ` Simon Wright
2014-11-09 20:53 ` Shark8
2014-10-28 19:18 ` Simon Clubley
2014-10-27 16:34 ` David Botton
2014-10-27 16:51 ` brbarkstrom
2014-10-27 18:03 ` G.B.
2014-10-27 22:06 ` Simon Wright
2014-10-28 9:40 ` Georg Bauhaus
2014-10-27 20:06 ` Adam Beneschan
2014-10-27 20:21 ` David Botton
2014-10-28 11:34 ` tonyg
2014-10-27 17:01 ` Pascal Obry
2014-10-27 4:53 ` Jerry Petrey
2014-10-29 1:49 ` F-35 (was:F-22 ADA Programming) Robert Love
2014-10-30 9:01 ` Frédéric Praca
2014-10-30 9:07 ` Frédéric Praca
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