[Gdal-dev] Proposal for Unified Windows Binaries

[Joaquim Luis]

Mateusz Loskot wrote:
>> A test case that I'm working with showed a dramatic reduction in
>> running time using this compiler. from 2 min 50 sec (exe compiled
>> with MSVC6) to 1:50
>>     
>
> It's not a surprise, because Visual C++ 6.0 is a dinosaur and it doesn't
> fit well to modern CPUs regarding optimization.
>
> Have you tried Visual C++ 8.0 or at least 7.1?
>   

Mateusz,
OK, I tried with 7.1 as well.
The times are now
2:25 min (VC6)
2:05 min (VC7.1)
1:20 min (Intel)

This is with a code that was originally in f77 and that I converted to C 
with f2c. I have
been working on it and that's why the times have changed from the 
figures I posted earlier.

A side, very irritating, note. With the fortran Intel compiler that same 
code takes 1:05 min


> Another subject is that it costs ~400 USD or so :-)
>   
I strong argument indeed.

Cheers

Joaquim