Last spring, I added many sempervivum cuttings to my collection. Only a few of them produced their own offsets, but this year, it looks like every species may start producing them. They usually start growing by around April, and now they are almost full size. This year, the new ones are about twice the size they were last year so there's a good chance that some of flowering.
Here's the original giant sempervivum that can get 9 inches in diameter when there is enough growing room, and partial shade.