On the performance of building D programs

[Vladimir Panteleev]

On Sunday, 7 April 2013 at 02:04:54 UTC, Andrei Alexandrescu 
wrote:
> Yah, I think it would be great to dedicate rdmd to the 
> dependency/caching part and leave the build to the compiler. 
> One possibility would be to run the build and the dependency 
> saving in parallel (!).

Why in parallel and not in one go? (-v with -rb and without -o-)