Ch 12 QR Decomposition

[cdeterman]

Is the kernel provided in Ch. 12 for QR Decomposition valid for non-square matrices? I only see a square matrix in the example and find nothing further in the book itself. Most algorithms/kernels I come across are only for square matrices so I would like to confirm.

[tangjinchuan]

For any new readers, the answer is no. And this kernel is also only working for a single workgroup. But it can lay a good foundation for further expansion.