Composer 2019 up2 -- Link error: _powf already defined in mkl_core.lib

[Guillaume_A_]

Hello,

Since I upgraded Composer from 2018 up3 to 2019 up2 I am getting linker errors such as: libmmd.lib(libmmd.dll) : : error LNK2005: _powf already defined in mkl_core.lib(_avx512_dgetri_small.obj). 

It appears when I am try to compile with ICC in 32bit (/Qm32) and disable optimization (/QOd). It compiles and links well with /Qm32 and optimization options (/O3, or /O2, ...). It also compiles and links fine in 64bit (/Qm64) with or without optimization.

You may reproduce with this simple code:

void AvxCopulaFunction::claytonCopulaIterationF(float* correlatedUniforms,const float* notCorrelatedUniforms,const float coeff1,const int length)
{
  __pragma(ivdep)
  for (int i = 0; i < length; i++)
  {
    correlatedUniforms = pow(1.0f + notCorrelatedUniforms, coeff1);
    // double precision version of "pow" works fine !
    //correlatedUniforms = pow(1.0 + (double)notCorrelatedUniforms, (double)coeff1);
  }
}

int AvxCopulaFunction::inverseLUFactoredSquareMatrix(double* matrixToOverwrite,int* inputPivotVector,const int matrixRank)
{
  return LAPACKE_dgetri( LAPACK_ROW_MAJOR, matrixRank, matrixToOverwrite, matrixRank, inputPivotVector );
}

Could you please have a look ?

My command lines are in attachment, let me know if you need more information.

I found this topic, it is maybe related: Linker errors with Visual Fortran Compiler 19.0.1.144

My config: Win10 x64, Visual Studio 2013, Composer 2019 up2

Regards,

Guillaume A.

[Gennady_F_Intel]

Guillaume, are you linking with 32 bit version of MKL?

[Guillaume_A_]

Hello Gennady,

According to my command line (in attachment of my first post), I use xilink from "C:\Program Files (x86)\IntelSWTools\compilers_and_libraries_2019\windows\bin\intel64\xilink.exe". I guess it is the 64bit version indeed. But I set the Path to the 32bit libs:

 /LIBPATH:"C:\Program Files (x86)\IntelSWTools\compilers_and_libraries_2019.2.190\windows\mkl\lib\ia32_win"

I will try to link with "C:\Program Files (x86)\IntelSWTools\compilers_and_libraries_2019\windows\bin\intel64_ia32\xilink.exe"

Guillaume A.

[Guillaume_A_]

Same link error with : "...intel64_ia32\xilink.exe"

[Gennady_F_Intel]

as a work around this problem, could you please try to uncomment the following definitions in math.h:

//# define ldexpf _MS_ldexpf

and

//#define powf _MS_powf

[Guillaume_A_]

Thanks, your workaround works fine Gennady. But it is unsuitable for an industrial usage :)

Could you please confirm that there is something to fix on your (Intel) side ?

Guillaume A.

[Gennady_F_Intel]

this compiler related problem has been escalated and we will update this thread as soon as the problem will be fixed.

[Guillaume_A_]

Hello,

The exact same problem appears now with Composer 2019 update 5 and Visual 2017 (BasePlatformToolset = V141).

Could you fix it again please ?

My config: Win10 x64, Visual Studio 2017, Composer 2019 up5. MKL on sequential Mode.

Regards,

Guillaume A.

[Gennady_F_Intel]

Guillaume,

the fix of the problem is targeted to be fixed the nearest MKL 2020 coming very soon. We will announce this release at the top of this forum. 

thanks

[Riccardo]

Dear Gennady,

I'm having this error in a Fortran project. I've updated from Parallel Studio XE 2019 to 2020 up0, but the error is still there. Has it been fixed afterwards? And if not, how can I apply the workaround?

Thanks for your reply.

Best regards,

Riccardo