Hi, On 8 October 2011 04:40, Maciej Fijalkowski <fij...@gmail.com> wrote:
> Hi > > I did some benchmarking of sympy under PyPy. I would like some > comments on the validity of benchmarks. I've use PyPy nightly from 7th > of Oct, CPython 2.7 release and sympy git trunk. > > Benchmarks (also http://paste.pocoo.org/show/489351/) > > Those are picked specifically so time stays around 1-5s > > Run: http://paste.pocoo.org/show/489352/ > > As you can see PyPy does give *a bit* of an edge once the JIT warms > up, although it's not a whole lot. We'll look how to make pypy faster > on those. > First, make sure that PyPy and CPython use the same ground (coefficient) types: from sympy.polys.domains import GROUND_TYPES print "types: %s" % GROUND_TYPES SymPy can pick up gmpy for this, instead of using pure Python types. To force usage of pure Python types, use the following code: import os os.environ["SYMPY_GROUND_TYPES"] = "python" # now you can import sympy Caching can seriously affect benchmarks, so I would disable it completely: import os os.environ["SYMPY_USE_CACHE"] = "no" # now you can import sympy > Is there any interest in making sympy more pypy friendly? > Can you provide some guidelines how we can achieve this? I was hoping that low-level stuff in SymPy should work well with PyPy, e.g.: from sympy import ZZ from sympy.polys.factortools import dmp_factor_list from sympy.polys.densearith import dmp_pow from sympy.polys.specialpolys import f_6 def bench_lowlevel_mv_factor(): # factor(f_6**2) in ZZ[x,y,z,t] dmp_factor_list(dmp_pow(f_6, 2, 3, ZZ), 3, ZZ) This, however, gives results other than I would expect: $ pypy bench.py cache: no types: python bench_lowlevel_mv_factor 1.41745710373 bench_lowlevel_mv_factor 1.37492704391 bench_lowlevel_mv_factor 1.28843522072 ... $ python2.7 bench.py cache: no types: python bench_lowlevel_mv_factor 0.23696398735 bench_lowlevel_mv_factor 0.235101938248 bench_lowlevel_mv_factor 0.238154888153 ... > > Cheers, > fijal > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To post to this group, send email to sympy@googlegroups.com. > To unsubscribe from this group, send email to > sympy+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/sympy?hl=en. > > Mateusz -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com. To unsubscribe from this group, send email to sympy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
