Re: ANN: Storage pool for Ada 2005 with bindings to Apache Runtime Pools library

[Brian Drummond <brian@shapes.demon.co.uk>]

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