CODEWITHSUNDEEP
c++visual-studiointelcompiler-optimization
Bernt Smith
Bernt Smith

Reputation: 101

Visual Studio C++ performance vs Intel C++ compiler 15

Visual Studio 2015 has got a lot of changes on the C++ compiler side and I'm looking for a benchmark/performance comparison between the Intel C++ compiler and Visual Studio 2015 !

About performance, I mean the performance of the generated code, something like this : https://software.intel.com/en-us/c-compilers/iss

Is there an interest to use the Intel C++ compiler ? Will it produce faster code ?

Thanks

Upvotes: 5

Views: 5853

Answers (2)

norisknofun
norisknofun

Reputation: 879

Few year ago, i did some tests on a mac-pro with intel proc. Results:

  1. icc+linux
  2. vc+win
  3. icc+win
  4. gcc+linux

icc+linux was the very best. vc+win, icc+win were pretty close.

Explanation: the more the software editor can exploit assertion on the system+hardware, the more it can design a compiler generating fast running code.

  • Intel is the best because it can exploit its processor and the system (open source).
  • VC under windows works great too, they know their OS.

Now, this depends of the kind of software. If your program will load a lot of data from disk the best will certainly be vc+win (they have great implementation of internal buffers...). If your program is very multithreaded, icc+linux is gonna win for sure. These are only 2 examples I can talk about because I tested these use cases.

Upvotes: 6

Sven Nilsson
Sven Nilsson

Reputation: 1879

I compared ICC and VC on Windows, and they were very close in terms of performance. I was able to make ICC beat VC only by using the "profile guided optimization" feature.

Upvotes: 1

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