From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham
	autolearn_force=no version=3.4.4
X-Google-Thread: 103376,7840ada5c7a0804
X-Google-NewGroupId: yes
X-Google-Attributes: gida07f3367d7,domainid0,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news2.google.com!news4.google.com!feeder.news-service.com!85.214.198.2.MISMATCH!eternal-september.org!feeder.eternal-september.org!.POSTED!not-for-mail
From: Brian Drummond <brian@shapes.demon.co.uk>
Newsgroups: comp.lang.ada
Subject: Re: ANN: Storage pool for Ada 2005 with bindings to Apache Runtime
 Pools library
Date: Thu, 24 Mar 2011 15:59:48 +0000 (UTC)
Organization: A noiseless patient Spider
Message-ID: <imfppk$td1$1@dont-email.me>
References: <D7Iip.550$%f5.84@newsfe08.iad>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Injection-Date: Thu, 24 Mar 2011 15:59:48 +0000 (UTC)
Injection-Info: mx03.eternal-september.org;
 posting-host="2/MJJb8Mjlq+ZnctuvE2xg";
	logging-data="30113"; mail-complaints-to="abuse@eternal-september.org";
	posting-account="U2FsdGVkX191ZasbL3kbv9KH9MhkXTG3lkOwxpCJ8A0="
User-Agent: Pan/0.133 (House of Butterflies)
Cancel-Lock: sha1:RqcRO0cRd36LQTs2W5WZr2TWNqo=
Xref: g2news2.google.com comp.lang.ada:19399
Date: 2011-03-24T15:59:48+00:00
List-Id: <comp.lang.ada>

On Thu, 24 Mar 2011 08:00:04 -0600, Brad Moore wrote:

> This is the initial release of a storage pool for Ada 2005 called
> Deepend, that binds to the Apache Runtime Pools library.
> 
> The latest stable release and older releases may be downloaded from;
> 
> https://sourceforge.net/projects/deepend/files/

Excellent!

> Low-level Bindings to the Apache Runtime Pools library were recently
> used for a submission to the Computer Language Benchmarks game, binary
> tree benchmark, and moved Ada into the number 2 spot behind C. On my
> machine, the Ada version actually runs 10% faster than the C version,
> but for some reason the benchmark has C ahead of Ada. It may be that the
> number of worker threads isn't tuned correctly for the benchmark
> hardware, or compiler version differences, or other differences related
> to the target platform.

Great work, and certainly blows the doors off my puny efforts!

You may be right about tuning the number of threads; on my (AMD Phenom) 
system, my version (#3) gave the same runtime for 4 or 8 tasks, but on 
the test system (Intel Q6600) 8 tasks was about 10% slower than 4. (The 
memory footprint was doubled, suggesting memory or cache limitations on 
the Intel system).

It may be worth posting the Deepend version - either there, or is there a 
place on Rosetta for it? - as a demonstration of the flexibility of Ada's 
storage pools.

- Brian