On Wednesday, 8 January 2020 at 04:40:02 UTC, Guillaume Lathoud
wrote:
* first run (compiling everything): 50% to 100% slower than
classical compilation, depending on the hardware, resp. on
an old
4-core or a more recent 8-core.
If parallel compiler invocations for each source file are indeed
that much slower than a single serial all-at-once compilation in
your case, you can also try to compile all modules at once, but
output separate object files - `ldc2 -c a.d b.d c.d`.
I wonder if some heuristic roughly along these lines - when
enough source files and enough cores, do parallel and/or re-use
- could be integrated into the compilers, at least in the form
of an option.
I think that's something to be handled by a higher-level build
system, not the compiler itself.
