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Problems.md

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About graph kenrels.

(Random walk) Sylvester equation kernel.

ImportError: cannot import name 'frange' from 'matplotlib.mlab'

You are using an outdated control with a recent matplotlib. mlab.frange was removed in matplotlib-3.1.0, and control removed the call in control-0.8.2.

Update your control package.

Intel MKL FATAL ERROR: Cannot load libmkl_avx2.so or libmkl_def.so.

The Intel Math Kernel Library (MKL) is missing or not properly set. I assume MKL is required by the control module.

Install MKL. Then add the following to your path:

export PATH=/opt/intel/bin:$PATH

export LD_LIBRARY_PATH=/opt/intel/lib/intel64:/opt/intel/mkl/lib/intel64:$LD_LIBRARY_PATH

export LD_PRELOAD=/opt/intel/mkl/lib/intel64/libmkl_def.so:/opt/intel/mkl/lib/intel64/libmkl_avx2.so:/opt/intel/mkl/lib/intel64/libmkl_core.so:/opt/intel/mkl/lib/intel64/libmkl_intel_lp64.so:/opt/intel/mkl/lib/intel64/libmkl_intel_thread.so:/opt/intel/lib/intel64_lin/libiomp5.so

Module slycot install error.

A fortran compiler (e.g., gfortran) and BLAS/LAPACK (e.g. liblapack-dev) needs to be pre-installed. Try to include them in the library or remove these dependences. See slycot's file for detail.