Re: Apex vs GNAT on solaris

[reason67@my-deja.com]

In article <82hob6$avp$1@nnrp1.deja.com>,
  Robert Dewar <robert_dewar@my-deja.com> wrote:
> In article <82hk5c$80p$1@nnrp1.deja.com>,
>   reason67@my-deja.com wrote:
> >     Start_Time := Ada.Calendar.Clock;
> >     Free (Last);
> >     Stop_Time := Ada.Calendar.Clock;
>
> This is completely hopeless methodology, of course you will
> not get useful results this way, the time for a Free is
> orders of magnitude faster than the clock resolution.

Good to know. That would explain why it did not work :)

> I recommend looking at the PIWG tests or at the ACES tests
> for examples of how to do timing in a meaningful way.

I will look into it. Thanks for the info.

> In fact unless you have a lot of experience in the construction
> of meaningful benchmarks, I think you will find the ACES
> quicklook to be a much more meaningful comparison that tests
> that you prepare yourself. There are simply too many pitfalls
> in benchmark construction :-)

Nope. I have alot of experience writing Ada and working for companies
that say things are too slow when no one has ever checked. In this case,
I decided to check. I have found alot of discrepencies so far. :)
---
Jeffrey S. Blatt


Sent via Deja.com http://www.deja.com/
Before you buy.