The difference in glass is noticeable.
However there is been a surprising side effect: the new version is also faster (check the samples/sec above). I would have expected to see the new version slightly slower due to some small synchronization required. This may be explained with a better cache coherency of the new version. Anyway, I'm not going to complain
![Mr. Green :mrgreen:](./images/smilies/icon_mrgreen.gif)
The only unknown now is to see how it will work in OpenCL (the above results are on CPU). The code is on "new_samplers" branch.
P.S. at this point I may work also on a new version of the TILEPATH sampler to use Sobol sequence instead of stratification + RANDOM.