Re: [boost] [review] The review of Boost.DoubleEnded starts today: September 21 - September 30

Subject: Re: [boost] [review] The review of Boost.DoubleEnded starts today: September 21 - September 30
From: Thorsten Ottosen (tottosen_at_[hidden])
Date: 2017-10-13 18:32:59

Den 13-10-2017 kl. 19:45 skrev Benedek Thaler via Boost:

> (It'd be great if someone could re-run these tests to verify my results)

I gave it a try. My compile options are

/GS- /GL /analyze- /W3 /Gy /Zc:wchar_t 
/I"C:\dezide_cpp_projects\CDependencies\include" /Zi /Gm- /O2 /Ob2 
/Fd"Release\vc141.pdb" /Zc:inline /fp:precise /D "WIN32" /D "NDEBUG" /D 
"_CONSOLE" /D "_UNICODE" /D "UNICODE" /errorReport:prompt /WX- 
/Zc:forScope /arch:SSE2 /Gd /Oy- /Oi /MD /Fa"Release\" /EHsc /nologo 
/Fo"Release\" /FAs /Ot /Fp"Release\TestDoubleEnded.pch" 
/diagnostics:classic
/D _SECURE_SCL=0 /D _CRT_SECURE_NO_DEPRECATE=1 /D 
_SCL_SECURE_NO_DEPRECATE=1 /D _CRT_NONSTDC_NO_DEPRECATE=1 /D 
BOOST_DISABLE_ASSERTS /Qpar /DHAVE_STD_REGEX

32 bit:

Run on (8 X 3492 MHz CPU s)
10/13/17 20:12:05
-------------------------------------------------------------
Benchmark                      Time           CPU Iterations
-------------------------------------------------------------
devector_insert/8           3266 ns       3105 ns     236166
devector_insert/64         26578 ns      28473 ns      34517
devector_insert/512       227531 ns     255922 ns       2804
devector_insert/4096     2505054 ns    2836382 ns        374
devector_insert/32768   68911138 ns   74880480 ns         10
devector_insert/65536  259531320 ns  254801633 ns          3
cvector_insert/8            3290 ns       3598 ns     195094
cvector_insert/64          26778 ns      26700 ns      28045
cvector_insert/512        227676 ns     219034 ns       3205
cvector_insert/4096      2592786 ns    2192785 ns        249
cvector_insert/32768    79741257 ns   71067122 ns          9
cvector_insert/65536   298786812 ns  280801800 ns          2

64 bit:

Run on (8 X 3492 MHz CPU s)
10/13/17 20:08:24
-------------------------------------------------------------
Benchmark                      Time           CPU Iterations
-------------------------------------------------------------
devector_insert/8           1609 ns       1577 ns     524336
devector_insert/64         12828 ns      14185 ns     112179
devector_insert/512       117994 ns     156453 ns       4487
devector_insert/4096     1668282 ns    1813238 ns        499
devector_insert/32768   70929677 ns   80229086 ns          7
devector_insert/65536  278686251 ns  312002000 ns          2
cvector_insert/8            1603 ns       1596 ns     498572
cvector_insert/64          13468 ns      12724 ns      74786
cvector_insert/512        133092 ns     126901 ns       8974
cvector_insert/4096      2624790 ns    2561781 ns        408
cvector_insert/32768   140670228 ns  146640940 ns          5
cvector_insert/65536   624126003 ns  702004500 ns          1

I wonder why there is so little difference when the container is small.

I tried to replace int with std::array<std::string, 32>:

32 bit:

Run on (8 X 3492 MHz CPU s)
10/13/17 20:27:33
------------------------------------------------------------
Benchmark                     Time           CPU Iterations
------------------------------------------------------------
devector_insert/8         14473 ns      16062 ns      40792
devector_insert/64       223566 ns     205850 ns       2804
devector_insert/512     8662095 ns    9750063 ns         64
devector_insert/4096  516563332 ns  475803050 ns          2
cvector_insert/8          12911 ns      10326 ns      49857
cvector_insert/64        319786 ns     344166 ns       2493
cvector_insert/512     16773834 ns   18973095 ns         37
cvector_insert/4096  1056974335 ns  920405900 ns          1

64 bit:

Run on (8 X 3492 MHz CPU s)
10/13/17 20:28:54
------------------------------------------------------------
Benchmark                     Time           CPU Iterations
------------------------------------------------------------
devector_insert/8         10183 ns      11056 ns      74786
devector_insert/64       178753 ns     187744 ns       4487
devector_insert/512     7788603 ns    8666722 ns         90
devector_insert/4096  493624150 ns  475803050 ns          2
cvector_insert/8           9110 ns       9804 ns      74786
cvector_insert/64        275540 ns     294866 ns       2804
cvector_insert/512     15341661 ns   18373451 ns         45
cvector_insert/4096   978790847 ns  904805800 ns          1

kind regards

Thorsten