[pypy-dev] trying out STM for some numbers on more cores
wlavrijsen at lbl.gov
wlavrijsen at lbl.gov
Wed Oct 30 23:58:16 CET 2013
Amaury,
On Wed, 30 Oct 2013, Amaury Forgeot d'Arc wrote:
> Also, the process should perform 1000 iterations before you start the
> timings.
> The JIT needs a lot of iterations to be warm-up correctly.
so, each 'iteration' that I had in the table contains an inner loop that
is itself JIT-ed (not verified, but just compare the PyPy-2.1 v.s. CPython
numbers to see how well that works; likewise, if I switch off the JIT, the
result is an xx slowdown compared to CPython). Thus, if '100 iterations,'
the hurt should only be in the first iteration.
Best regards,
Wim
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