SparseCholeskyAllocator allocates and initializes the sparse
matrix that is input to the sparse matrix kernel for the
purposes of conducting a single performance trial with the
SparseCholeskyMicrobenchmark function. The matrix is populated
and returned in the kernelParameters list.SparseCholeskyAllocator(benchmarkParameters, index)SparseMatrixMicrobenchmark specifying various parameters
needed to generate input for the sparse matrix kernel.