Array, dimension (64). This array is used to pass various parameters to PARDISO and to return some useful information after execution of the solver. If iparm(1) = 0, PARDISO fills iparm(12), and iparm(4) through iparm(64) with default values and uses them. ...
In the definition of the block compressed sparse row (BSR) format, at http://software.intel.com/sites/products/documentation/hpc/compilerpro/en-us/cpp/win/mkl/refman/inde...,
If the size of the block equals 2, then the sparse matrix D can be represented as a 3x3 block matrix E with the following structure:
Here, N = [ 1,4 ; 5,1 ] where in D, the corresponding submatrix reads [ 1,4; 5,2 ]. The "values" arrays in both one- and zero-based indexing are in accordance to the D matrix.