D for scientific computing

[lomereiter]

On Friday, 25 January 2013 at 00:25:46 UTC, Joseph Rushton 
Wakeling wrote:
> If I remove the writef statements, leaving just the 
> number-crunching part, it runs in about 4s with gdmd, 7s with 
> ldmd2 and 14s (!) with dmd.

 From my experience, writef and friends are substantially slower 
than printf. I wouldn't recommend using them for output-intensive 
applications. And of course, the best option is to avoid any 
format string parsing altogether, using only fwrite calls.