Calling a threaded function of the MKL from python: openmp library not found?

Question

I am using the ctypes module to load the Intel MKL into python and then I'd like to call a routine that requires openmp parallelization (pardiso, in my case)

I found this useful link on the Intel sites that details the process, and I can run their example code, but when I run my own example that uses an openmp threaded function, the program crashes with the message

python: symbol lookup error: /opt/intel/Compiler/11.1/072/mkl/lib/em64t/libmkl_intel_thread.so: undefined symbol: omp_get_num_procs

I strongly suspect that loading the libmkl_rt.so doesn't properly trigger a load of libiomp5.so

I have tried adding the Intel MKL library paths (and the "normal" Intel library paths) to both LD_RUN_PATH and LD_LIBRARY_PATH, to no avail, although in these paths both the mkl libraries and the openmp library (intel version) are contained.

What's the magic trick here?

Note that although I also use numpy, I have not built numpy against the mkl. But I doubt that this should matter, because I should be able to call stuff from the mkl without doing anything with numpy in the first place.

cadolphs · Accepted Answer · 2012-01-26 00:14:40Z

3

NVM, turns out I had an older version of the MKL installed.

Following the instructions on the link I gave for versions older than 10.3 I got it up and running.

answered Jan 26, 2012 at 0:14

cadolphs

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