On Tuesday, 23 December 2014 at 10:20:04 UTC, Iov Gherman wrote:
That's very different to my results.
I see no important difference between ldc and dmd when using
std.math, but when using core.stdc.math ldc halves its time
where dmd only manages to get to ~80%
I checked again today and the results are interesting, on my pc
I don't see any difference between std.math and core.stdc.math
with ldc. Here are the results with all compilers.
- with std.math:
dmd: 4 secs, 878 ms
ldc: 5 secs, 650 ms
gdc: 9 secs, 161 ms
- with core.stdc.math:
dmd: 5 secs, 991 ms
ldc: 5 secs, 572 ms
gdc: 7 secs, 957 ms
These multi-threaded benchmarks can be very sensitive to their
environment, you should try running it with nice -20 and do
multiple passes to get a vague idea of the variability in the
result. Also, it's important to minimise the number of other
running processes.
