Misc questions:- licensing, VC++ IDE compatible, GPGPU, LTCG, QT, SDL

[retard]

Thu, 20 May 2010 10:06:17 -0700, Walter Bright wrote:

> retard wrote:
>> It's a rookie mistake to believe that languages have some kind of
>> differences performance wise.
> 
> Well, they do. It's also true that these performance differences can be
> swamped by the quality of the implementation, and the ability of the
> programmer. But that doesn't mean there are not inherent performance
> differences due to the semantics the language requires.
> 
> It's like car racing. The performance is a combination of 3 factors:
> 
> 1. the 'formula' for the particular class you're racing in 2. the
> quality of the construction of the car to that formula 3. the ability of
> the driver
> 
> It's simply wrong to measure the performance and then naively attribute
> it to one of those three, pretending the other two are constant.

Of course. The language/implementation comparisons are all faulty. You 
also need to model the performance of the programmer by building some 
kind of developer skill profiles and measure how the languages & 
implementations compete against each other in all these skill classes. 
For example the language shooutout site favors experienced programmers; 
bad programmers generate code with 2-3 orders of magnitude worse 
performance.