Interesting, …

[Russel Winder via digitalmars-d-ldc]

For fun (!) I used my new ldc2 build on Fedora 20 to run my "π by
quadrature" examples. On my 7 year old 8 core workstation, the various C
++ versions tend to take about 1.1s using all 8 cores (as do C, Java,
Scala, etc.). Indeed generally so do all the D codes using LDC or GDC –
DMD takes generally twice as long.

Now something potentially remarkable: using ldc the std.parallelism.map
version of the code takes 0.6s. dmd takes 2.6s, I can't test gdc on
Fedora as Fedora do not package it and I haven't built it.

There could be many reasons for this result, but it appears at present a
genuine "D runs 1.8 times faster than C++".

Clearly this needs std.benchmark to be rolled out, along with something
equivalent for C++ (but I am not sure what just at present). More news
as it happens.
 
-- 
Russel.
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Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder at ekiga.net
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