Error Using Determinant Function

Upon attempting to use Matlab's built in command to find the determinant of a matrix, I received the following error message.

Error using det LAPACK loading error: mkl.dll: The parameter is incorrect.

This was quite puzzling as I was simply trying to take the determinant of a 3x3 matrix, almost identical to the one given in the example of how to correctly use the det command. I cannot find anything anywhere to explain why you would get this LAPACK error. Any help is appreciated.

[Nicolas Schmit]

Could you please share the code that produces the error.

Answer 1

[Arvind Narayanan]

By default, MATLAB should be using Intel MKL for all linear algebra operations. Your MKL library should be located at matlabroot\bin\arch\mkl.dll.

You can try the following as a potential fix:-

- Verify that the file "mkl.dll" exists in matlabroot\bin\arch, where matlabroot is your root folder, and arch corresponds with the architecture of your system.

- Set the values of both the LAPACK_VERSION and BLAS_VERSION environment variables to "mkl.dll" (without the quotation marks).

- Restart MATLAB and see if you still experience those errors.