On Wednesday, 13 June 2018 at 06:46:43 UTC, Mike Franklin wrote:
I had a little fun today kicking the crap out of C's memcpy
with a D implementation.
https://github.com/JinShil/memcpyD
Request for help: I don't have a Linux system running on real
hardware at this time, nor do I have a wide range of platforms
and machines to test with. If you'd like to help me with this
potentially foolish endeavor, please run the program on your
hardware and send me the results.
Feedback, advise, and pull requests to improve the
implementation are most welcome.
Mike
specs
.........................................
(note: tried DMD v2.078.3) > dmd -O (and got strange assertion
errors).
(used LDC 1.8.0 instead) > ldc2 -O2
Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
24GB Mem (Speed: 1066 MT/s)
Kubuntu 18.04 LTS - 4.15.0-23-generic
........................................
results
........................................
size memcpyC memcpyD
1 0 0
2 0 0
4 0 0
8 0 0
16 1247 0
32 1889 0
64 3055 0
128 5040 0
256 91407 0
512 158527 0
1024 253191 870780
2048 474243 1170349
4096 932151 1933045
8192 1894059 3284901
16384 4447945 6122015
32768 18572704 20772417
65536 37470068 40211203
size memcpyC memcpyD
1 0 0
1 0 0
1 0 0
2 0 0
2 0 0
4 0 0
4 0 0
8 0 0
8 0 0
4 0 0
8 0 0
16 0 0
..........................
