topic OMP: Error #15: Initializing libiomp5mt.lib, but found libiomp5 in Intel® oneAPI Math Kernel Library

OMP: Error #15: Initializing libiomp5mt.lib, but found libiomp5mt.lib already initialized.

Alexander_Schiftner — Tue, 24 Jan 2012 14:39:19 GMT

Dear Forum users,

I'm using Pardiso from MKL on Windows. Since I updated to the most up to date version, I'm receiving the following error message.

OMP: Error #15: Initializing libiomp5mt.lib, but found libiomp5mt.lib already initialized.

OMP: Hint: This may cause performance degradation and correctness issues. Set environment variable KMP_DUPLICATE_LIB_OK=TRUE to ignore this ....

My program terminates with this error message. Interestingly, it does not happen with every call to Pardiso. Sometimes it will just work.

I thought this problem might be caused by static linking, so I switched to dynamic linking (DLLs), but this did not solve the problem.

I would be grateful for any hint.

Regards, Alex

OMP: Error #15: Initializing libiomp5mt.lib, but found libiomp5

Gennady_F_Intel — Tue, 24 Jan 2012 15:44:56 GMT

Alex, please see this article. Is that your case?

OMP: Error #15: Initializing libiomp5mt.lib, but found libiomp5

Alexander_Schiftner — Wed, 25 Jan 2012 17:43:32 GMT

Dear Gennady,

many thanks for your answer. This is not my case. My application links against

libiomp5md.lib

mkl_intel_c_dll.lib

mkl_intel_thread_dll.lib

mkl_core_dll.lib

My application containts two custom DLLs, one depending on another, which both link againstlibiomp5md.lib. Is this a problem?

Alex

OMP: Error #15: Initializing libiomp5mt.lib, but found libiomp5

TimP — Wed, 25 Jan 2012 20:19:00 GMT

It's a problem if libiomp5mt.lib is also linked in, as your error message indicates. Nowhere should there be a reference to libiomp5mt (or openmplink:static), as presence of both creates the situation referred to in the message.