These instructions are for implementing PARDISO with the only MAC OSX library they provide you with. I expect the instructions will be similar for other libraries, but the filename of the library will be different.

Steps:

1. Go to [[http://www.pardiso-project.org/|http://www.pardiso-project.org/]] and Click on the link for 'Download Software And License'

2. Choose Academic(Free) and click Continue

3. Fill in your information and Submit

4. You should immediately receive an e-mail containing a file libpardiso500-MACOS-X86-64.dylib and your license key.

5. Create a text file containing only your license key with no white space, name it pardiso.lic, and place it in your home directory.

6. Place the .dylib (dynamic library) file in a directory of your choice.

7. In the source directory, open the file Makefile_local, and look under #Libraries

8. Set PARDISO_LIBDIR = -L[path to directory containing the dynamic library] (That is a capitol L, and leave out brackets around path)

9. Set PARDISO_LIBS = -lpardiso500-MACOS-X86-64                          (That is a lowercase L)

10. Open Makefile,  look under ##Choose Matrix Solver Package

11. Comment all lines under this heading with # (Except leave MATRIX_SOLVER = build)!, and set MATRIX_SOLVER ?= PARDISO

12. Go into jacobian_PARDISO.f90 and uncomment the line that calls pardisoinit

Now you can compile and run as before, but it should be faster than the default LAPACK solver.