Hi all, An update for STM: today I managed to build a pypy using the new "stm gc". It runs richards.py on tannit:
in 1 thread: 2320 ms per iteration in 2 threads: 1410 ms per iteration in 4 threads: 785 ms per iteration in 8 threads: 685 ms per iteration The small gap between 4 and 8 threads is due to tannit having only 4 "real" cpus, each one hyperthreaded. The additional gain is thus smaller than expected. For comparison, a "pypy --jit off" runs at 650ms per iteration. So the single-threaded performance is already at only 3.6x worse, and moreover there are still a few easy big-win optimizations. I will confirm it in a few days, but I would say that this shows it's working quite well. :-) At least, it's fun to see in "top" a single pypy process using 397% cpu :-) For people interested, it is in the "stm-gc" branch; at least bba9b03f5e70 works. Linux-only for now: " translate.py -O1 --stm targetpypystandalone --no-allworkingmodules --withmod-transaction --withmod-select --withmod-_socket ". The modified version of richards.py I use is in pypy/translator/stm/test/. A bientôt, Armin. _______________________________________________ pypy-dev mailing list pypy-dev@python.org http://mail.python.org/mailman/listinfo/pypy-dev
