mattip

--- a/rpython/translator/c/genc.py      Sun Dec 21 17:45:01 2014 +0200
+++ b/rpython/translator/c/genc.py      Thu Dec 18 07:07:00 2014 +0200
@@ -462,7 +462,7 @@

         else:
             if self.translator.platform.name == 'msvc':
-                mk.definition('DEBUGFLAGS', '-MD -Zi')
+                mk.definition('DEBUGFLAGS', '-MD -Zi -D_DEBUG')
             else:
                 if self.config.translation.shared:

mattip

# Benchmark linalg.inv for square matrices.
# Copyright Matti Picus, 2015
# This is free and unencumbered software released into the public domain.

#Anyone is free to copy, modify, publish, use, compile, sell, or
#distribute this software, either in source code form or as a compiled
#binary, for any purpose, commercial or non-commercial, and by any
#means.

#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

mattip

$ ../pypy-virt/bin/pypy inverse.py 5 10 20 50 100 1000
../pypy-virt/site-packages/numpy/linalg/_umath_linalg.py:79: UserWarning: npy_clear_floatstatus, npy_set_floatstatus_invalid not found
  warn('npy_clear_floatstatus, npy_set_floatstatus_invalid not found')
after  3999999, for n=  5, time=47.15,     11.79 msec/1000 loops
after   999999, for n= 10, time=19.93,     19.93 msec/1000 loops
after   249999, for n= 20, time=11.85,     47.38 msec/1000 loops
after    39999, for n= 50, time=9.89,    247.18 msec/1000 loops
after     9999, for n=100, time=11.05,   1105.08 msec/1000 loops
after       99, for n=1000, time=29.17, 294613.17 msec/1000 loops

mattip

#The function __A_ctor becomes _A__A_ctor automatically, causing
# https://bitbucket.org/pypy/numpy/issue/30

class A():
    def get_ctor(self):
        return __A_ctor()

def __A_ctor():
    return A()

mattip

grep '\(^[A-Z][a-z][a-zA-Z]*:\)\|\(^AssertionError$\)' numpy_test.log |cut -f1,2 -d, | sort |uniq -c |sort -n -r
     74 AssertionError:
     45 AttributeError: 'numpy.ndarray' object has no attribute 'partition'
     42 TypeError: data type not understood
     29 NotImplementedError: einsum not implemented yet
     29 NotImplementedError: broadcast not implemented yet
     25 ValueError: outer product only supported for binary functions
     24 NotImplementedError: digitize not implemented yet
     22 TypeError: unsupported operand type(s) for *: 'float64' and 'Polynomial'
     19 NotImplementedError: bincount not implemented yet

mattip

You might be surprised, give it a chance. There are use cases for pure Python JIT accelerated code especially when dealing with small ndarrays since the Python-to-c conversions can require memcpy. 

The MyHDL project shows some nice performance boost when using PyPy [0], simulations were comparable to commercial VHDL and HDL simulators.

The puppy team demonstrated real time image processing (30 fps Sobel filtering) a few years ago, in pure Python [1]

[0] http://old.myhdl.org/doku.php/performance
[1] http://morepypy.blogspot.com/2011/07/realtime-image-processing-in-python.html

mattip

$ hg heads --template '{node|short}:{branches}:{author|user}\n' |cut -f3 -d: | sort |uniq -c |sort -n -r
     41 arigo
     16 ronan
     14 amauryfa
     10 cfbolz
     10 alex
      7 vincent
      7 pjenvey
      6 hakan
      5 numerodix

mattip

$ grep '\(^[A-Z][a-z][a-zA-Z]*:\)\|\(^AssertionError$\)' /tmp/numpy.log |cut -f1,2 -d, | sort |uniq -c |sort -n -r
     87 AssertionError: 
     48 TypeError: data type not understood
     29 NotImplementedError: einsum not implemented yet
     29 NotImplementedError: broadcast not implemented yet
     25 ValueError: outer product only supported for binary functions
     24 NotImplementedError: digitize not implemented yet
     22 TypeError: unsupported operand type(s) for *: 'float64' and 'Polynomial'
     20 NotImplementedError: 1-arg where unsupported right now
     19 ValueError: axes don't match array

mattip

set PATH=d:\pypy_stuff\cpython-release\Scripts;d:\pypy_stuff\local\bin;d:\pypy_stuff\local\tcltk\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;c:\Program Files\TortoiseHg;d:\pypy_stuff\pypy-4.0.1-win32
set INCLUDE=d:\pypy_stuff\local\include;d:\pypy_stuff\local\tcltk\include
set LIBPATH=d:\pypy_stuff\local\lib;d:\pypy_stuff\local\tcltk\lib
set LIB=d:\pypy_stuff\local\lib;d:\pypy_stuff\local\tcltk\lib
set MSRKINECTSDK=
set VS100COMNTOOLS=
set PATHEXT=.COM;.EXE;.BAT;.CMD;.MSC
set PSMODULEPATH=
rem prevent colorama from screwing up the colors
set PY_COLORS=0

mattip

$ grep -a '\(^[A-Z][a-z][a-zA-Z]*:\)\|\(^AssertionError$\)' test.out |cut -f1,2 -d, | sort |uniq -c |sort -n -r
     66 AssertionError: 
     34 AttributeError: 'module' object has no attribute 'getrefcount'
     21 AttributeError: 'method' object has no attribute 'im_func'
     17 TypeError: expected a readable buffer object
     15 NotImplementedError: settting a slice of a PySequence_Fast is not supported
     12 AssertionError
      9 TypeError: sys.getsizeof() not implemented on PyPy
      6 ValueError: EOF: reading array data, expected 32 bytes got 0
      4 UnboundLocalError: local variable 'arr_reloaded' referenced before assignment