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Re: C++ compile and execution times
Wolfgang Bangerth <bangerth@ticam.utexas.edu> writes:
> Hi there,
> this is basically a nasty mail. The background is that we were asked to
> submit our project, deal.II (see www.dealii.org), for the SPEC 2004 suite,
> so I did a couple of measurements. Long results for my measurements are
> below, but here is a summary:
> - recent versions of gcc take more than twice as long to compile the
> library than, for example, gcc2.95 or icc;
> - yet, the run time (with various optimizations turned on) of the
> example programs of deal.II is approximately 10% longer.
I'd be interested in seeing -ftime-report comparisons for
representative files, or even profiling data if you can swing it.
Assuming I can schedule it, I intend to do quite a bit of work on
compilation speed for 3.4.
zw