In Matlab, I can determined which intel MKL is used using a command such as this:
>> version -lapack
Intel(R) Math Kernel Library Version 11.2.3 Product Build 20150413 for Intel(R) 64 architecture applications, CNR branch AVX Linear Algebra PACKage Version 3.5.0
>> version -blas
Intel(R) Math Kernel Library Version 11.2.3 Product Build 20150413 for Intel(R) 64 architecture applications, CNR branch AVX
So the above tells me Matlab is linked to
How to determined which MKL version is used in Mathematica? I kept searching, but could not find a way. I see this on my system (windows 7)
C:\Program Files\Wolfram Research\Mathematica\11.0\SystemFiles\ Kernel\Binaries\Windows-x86-64\mkl_intel_thread.dll
I need to check the MKL version linked with version $11$ and compare it to MKL linked to earlier version of Mathematica.
Thanks to comment below by
Szabolcs it seems File properties->Details shows the info needed. I am not sure though that the
mkl_intel_thread.DLL is the one actually used by Mathematica. But this is good start.
Mathematica Version 11 (no speed boost with rank calculation)
version 10.3 Mathematica (has speed boost with rank calculation)