topic MKL FATAL Error - Error on loading function mkl_vml_serv_threader_c_1i_2o. in Intel® oneAPI Math Kernel Library

MKL FATAL Error - Error on loading function mkl_vml_serv_threader_c_1i_2o.

des_c_ — Mon, 07 Aug 2017 15:49:26 GMT

Hi, i am trying out the latest intel python with TBB. i tried 'python -m TBB test.py' which test is a program with lots of PANDAS dataframe and random forest regressors. Any advice what should i be looking at? This is on windows 7 64 bits

Hi,

Oleksandr_P_Intel — Mon, 07 Aug 2017 18:21:42 GMT

Hi,

Could you please confirm whether your program uses NumExpr? Additionally, please provide the output of ``conda list mkl``

Thank you,
Oleksandr

hi, yes i use a lot of scikit

des_c_ — Tue, 08 Aug 2017 06:31:00 GMT

hi, yes i use a lot of scikit-learn, statsmodels and scipy, not sure NumExpr is involve but i dont use it directly.

for mkl

mkl 2017.0.3 intel_5 [intel] intel

numpy config as such: -

lapack_mkl_info:
define_macros = [('SCIPY_MKL_H', None), ('HAVE_CBLAS', None)]
library_dirs = ['c:/IntelPython3\\Library\\lib']
include_dirs = ['c:/IntelPython3\\Library\\include']
libraries = ['mkl_core_dll', 'mkl_intel_lp64_dll', 'mkl_intel_thread_dll']
mkl_info:
define_macros = [('SCIPY_MKL_H', None), ('HAVE_CBLAS', None)]
library_dirs = ['c:/IntelPython3\\Library\\lib']
include_dirs = ['c:/IntelPython3\\Library\\include']
libraries = ['mkl_core_dll', 'mkl_intel_lp64_dll', 'mkl_intel_thread_dll']
blas_opt_info:
define_macros = [('SCIPY_MKL_H', None), ('HAVE_CBLAS', None)]
library_dirs = ['c:/IntelPython3\\Library\\lib']
include_dirs = ['c:/IntelPython3\\Library\\include']
libraries = ['mkl_core_dll', 'mkl_intel_lp64_dll', 'mkl_intel_thread_dll']
lapack_opt_info:
define_macros = [('SCIPY_MKL_H', None), ('HAVE_CBLAS', None)]
library_dirs = ['c:/IntelPython3\\Library\\lib']
include_dirs = ['c:/IntelPython3\\Library\\include']
libraries = ['mkl_core_dll', 'mkl_intel_lp64_dll', 'mkl_intel_thread_dll']
blas_mkl_info:
define_macros = [('SCIPY_MKL_H', None), ('HAVE_CBLAS', None)]
library_dirs = ['c:/IntelPython3\\Library\\lib']
include_dirs = ['c:/IntelPython3\\Library\\include']
libraries = ['mkl_core_dll', 'mkl_intel_lp64_dll', 'mkl_intel_thread_dll']

We are able to reproduce the

Jingwei_Z_Intel — Tue, 08 Aug 2017 17:17:15 GMT

We are able to reproduce the error on our side, and we are working on a fix.

Thank you,

Jingwei Zhang

Hi des,

Oleksandr_P_Intel — Wed, 09 Aug 2017 16:57:19 GMT

Hi des,

The crash is caused by use of vector math library (VML) using TBB as MKL's threading and is specific to Windows only. As Jingwei said, the fix is underway.

The current work-around is not to use the TBB package on Windows, since it makes MKL dynamic runtime use TBB threading layer.

Per our findings the crash happens through the use of numexpr, but it would be helpful to confirm that on your end. If it possible to share a reproducer with us, please let us know. Otherwise, please provide the output of `conda list --explicit` for the environment where you experience the issue.

It would also be helpful to know if you are using `numpy.random_intel`?

Thank you,
Oleksandr