topic Hi Michele, in Intel® oneAPI Math Kernel Library

Incorrect library path in the dylibs for MKL.

Robert_Bell — Thu, 24 Jul 2008 17:33:22 GMT

Hi all,

I am sure someone has already posted this, but I cannot seem to find it. It appears that MKL has a similar issue that IPP once had with its dylibs on Mac OS X. The correct path is not in the library (see below). This causes issues on Mac OS X where it is not always possible (or quite awkward) to set the DYLD_LIBRARY_PATH environment variable (such as for a plugin).

It is not possible for a user to update this, but needs to be done on your end (use -install_name) during the build.

Thanks,

Robert Bell. (www.egi.com)

Below is a comparisson between MKL's libguide and IPP's:

---

MKL's libguide.dylib:

$ otool -L libguide.dylib
libguide.dylib:
libguide.dylib (compatibility version 4.0.0, current version 4.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 88.3.6)

---

IPP's libguide.dylib:

$ otool -L libguide.dylib
libguide.dylib:
/Library/Frameworks/Intel_IPP.framework/Versions/5.3/em64t/Libraries/libguide.dylib (compatibility version 4.0.0, current version 4.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 88.1.3)

Re: Incorrect library path in the dylibs for MKL.

Todd_R_Intel — Thu, 24 Jul 2008 22:23:58 GMT

Thank you Robert. I'll bring this up with the engineering team. -Todd

Was there any update on it?

Michele_D_ — Thu, 29 Oct 2015 17:46:33 GMT

Was there any update on it?

This seems to be an issue with the new Mac OS X 10.11, because the user is not longer allowed to export the DYLD_LIBRARY_PATH variable.

Hi Michele,

Ying_H_Intel — Mon, 02 Nov 2015 08:20:12 GMT

Hi Michele,

Thank you much for your notes.

Right, DYLD_LIBRARY_PATH “not allowed” in some cases ( with the new Mac OS 10.11. Please let us know if you run into the problem.

Any MKL/IPP/DAAL team are working for the problem, should be addressed in next release update 2.

Best Regards,

Ying

For me the problem occurs in

Michele_D_ — Mon, 02 Nov 2015 10:47:24 GMT

For me the problem occurs in the following cases:

When I build a Python module that links to MKL.
When I use CMake with its built-in testing framework. When I use the commander "make test" the OS cannot find the linked MKL library.

For the moment I worked around the problem by making symlinks from /usr/local/lib/libmkl_*.dylib to /opt/intel/mkl/lib/libmkl_*.dylib.

Hi Michele,

Ying_H_Intel — Wed, 04 Nov 2015 01:56:11 GMT

Hi Michele,

Thanks for let us know and sharing the workaround. It looks fine.

Best Regards,

Ying.