Now, if we were talking about hundreds of thousands of threads or milions of threads, it would be interesting to see numbers for both threads and fibers...
FWIW, the use cases I'm seeing (and trust me those are very commonplace at least in scientific computing) involve not just hundreds or thousands of threads, but hundreds of millions of threads (billions of threads a couple of years from now).
On a single machine? That would be impressive!
Well, it depends on the size of the machine, doesn't it? The no. 1 machine on the top 500 list [1] (Tianhe-2 [2]) has 3120000 cores (in 16,000 compute nodes). Regards Hartmut --------------- http://boost-spirit.com http://stellar.cct.lsu.edu [1] http://www.top500.org/ [2] http://www.top500.org/list/2013/11/