QrAllocator allocates and populates the input to the
QR factorization dense matrix kernel for the purposes of
conducting a single performance trial with the QrMicrobenchmark
function. The matrices or vectors corresponding to the index
parameter must be allocated, initialized and returned in the
kernelParameters list.QrAllocator(benchmarkParameters, index)DenseMatrixMicrobenchmark specifying various parameters
needed to generate input for the dense matrix kernel.