[pythran] codespeed
- From: Pierrick Brunet <pierrick.brunet@xxxxxxxx>
- To: pythran@xxxxxxxxxxxxx
- Date: Sun, 20 Apr 2014 10:35:06 +0200
Hi pythraner.
As I re-enable the bench functionnality, I am able to fill a codespeed
database (available only on my computer. Sorry...).
Some bench are really interesting.
euler 14: we are only x2 faster than CPython
fibo_seq : we have almost no speed up
harris : only a x2 speed up
loopy_jacob : we have a really huge speed down (almost x50 compare to
CPython)
There are some others case too but I will not points all cases.
Also, I save time for omp version.
It is really funny to see that nqueen is x2 slower with omp than
without. Funny because it doesn't use it.
It is certainly du to a memory alignement issue du to improted symbole
from the ligomp library (This is the interpretation we had at work for
this kind of issue).
Some others tests have the same probleme like : perm, wdist and
wave_simulation.
Some other test like fibo have speed down too but it is du to bad use of
omp in the code. (bad because libgomp task are too costly so there are
speed down really often if we deal with recursive task without cutoff).
Have a nice week end.
Pierrick
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