On 10/06/2012 10:16 AM Julien Rioux wrote:

Hi,

Running sympy's test suite would be a good test for pypy. Sympy is a python module for symbolic mathematics (www.sympy.org). The release 0.7.2 is being prepared and there is a single test failure remaining when running under pypy nightly (from a couple days ago). It boils down to this small example:

dirac:~/git/sympy $ cat test_arnault.py from sympy.ntheory import isprime # Arnault's number a = int(''' 803837457453639491257079614341942108138837688287558145837488917522297\ 427376533365218650233616396004545791504202360320876656996676098728404\ 396540823292873879185086916685732826776177102938969773947016708230428\ 687109997439976544144845341155872450633409279022275296229414984230688\ 1685404326457534018329786111298960644845216191652872597534901''') print type(a) print a print isprime(a) dirac:~/git/sympy $ python test_arnault.py <type 'long'> 8038374574536394912570796143419421081388376882875581458374889175222974273765333652186502336163960045457915042023603208766569966760987284043965408232928738791850869166857328267761771029389697739470167082304286871099974399765441448453411558724506334092790222752962294149842306881685404326457534018329786111298960644845216191652872597534901 True dirac:~/git/sympy $ python -V Python 2.7.2 dirac:~/git/sympy $ pypy test_arnault.py <type 'long'> 8038374574536394912570796143419421081388376882875581458374889175222974273765333652186502336163960045457915042023603208766569966760987284043965408232928738791850869166857328267761771029389697739470167082304286871099974399765441448453411558724506334092790222752962294149842306881685404326457534018329786111298960644845216191652872597534901 RPython traceback: File "objspace_std_longobject.c", line 4316, in pow__Long_Long_Long File "rlib_rbigint.c", line 23606, in rbigint_pow Fatal RPython error: AssertionError Aborted dirac:~/git/sympy $ pypy --version Python 2.7.3 (7f6d5c878b908afec8a643b6d6166dfbd0af2bdf, Oct 03 2012, 11:42:40) [PyPy 1.9.1-dev0 with GCC 4.6.2]

This code (isprime) is part of previous sympy releases, and this failure did not happen with pypy 1.9 but happens with the nightly from Oct 3 (self built with translate.py -Ojit). Can anyone reproduce?

Thanks, Cheers, Julien

Hi Julien, I installed an unshared copy of sympy and changed your test_arnault.py to an equivalent ta2.py, to make it importable, with the code in main, so I could try an old trace routine I wrote long ago, which surprisingly still seems to sort of work: ______________________________________________________________________ [10:10 ~/wk/sympy]$ cat ta2.py from sympy.ntheory import isprime # Arnault's number def main(): a = int(''' 803837457453639491257079614341942108138837688287558145837488917522297\ 427376533365218650233616396004545791504202360320876656996676098728404\ 396540823292873879185086916685732826776177102938969773947016708230428\ 687109997439976544144845341155872450633409279022275296229414984230688\ 1685404326457534018329786111298960644845216191652872597534901''') print type(a) print a print isprime(a) if __name__ == '__main__': main() [10:10 ~/wk/sympy]$ ______________________________________________________________________ Here's the run, diffing the results of _test calls grepped out of a traces for pypy and python: [10:23 ~/wk/sympy]$ diff -u <(pypy $(which tw) ta2 main _test |grep 'R: _test\|^File') <(python $(which tw) ta2 main _test|grep 'R: _test\|^File') pypy: /usr/lib/libcrypto.so.0.9.8: no version information available (required by pypy) pypy: /usr/lib/libssl.so.0.9.8: no version information available (required by pypy) --- /dev/fd/63 2012-10-07 10:24:30.108533498 +0200 +++ /dev/fd/62 2012-10-07 10:24:30.108533498 +0200 @@ -1,2 +1,47 @@ File: "/home/bokr/lib/python2.7/site-packages/sympy/ntheory/primetest.py" - 72 [_test]: R: _test(...) => False + 71 [_test]: R: _test(...) => True + 66 [_test]: R: _test(...) => True + 66 [_test]: R: _test(...) => True + 71 [_test]: R: _test(...) => True ... 41 repeats of same as above and below ... + 71 [_test]: R: _test(...) => True [10:24 ~/wk/sympy]$ The 72, 71, 66 represent the line numbers of the returns from _test I didn't grep out the calls, as the args are such long wrapping long integers. I wrote out some failing args to pow (which I can't trace into as it's builtin) and made a tpow.py, seen below. HTH, Regards, Bengt Richter ______________________________________________________________________ [09:56 ~/wk/sympy]$ python --version Python 2.7.2 [09:56 ~/wk/sympy]$ pypy --version pypy: /usr/lib/libcrypto.so.0.9.8: no version information available (required by pypy) pypy: /usr/lib/libssl.so.0.9.8: no version information available (required by pypy) Python 2.7.1 (b590cf6de419, Apr 30 2011, 02:00:38) [PyPy 1.5.0-alpha0 with GCC 4.4.3] [09:56 ~/wk/sympy]$ cat tpow.py #!/usr/bin/python # def main(opts): expected = int('205308233964764741474065440722548147152837487' '8436244152161245680082478906739003837537707602796' '2523882678514957414514288325968530357544873923327' '2560600119280228812360239622859389835106130303819' '8812608395321192472488554180795988393259013286827' '6127496893617704776708371167151813294028632749297' '63810769866878488336371858543186166507924901737') actual = pow(2, int('200959364363409872814269903585485527034709' '4220718895364593722293805743568441333413046625584040990011' '3644787605059008021916424916902468210109913520582321846979' '6271729171433206694044275734742443486754177057607171777499' '3599941360362113352889681126583523197555688240573537460576' '720421351081614383504582446527824740161211304047913218149383725'), int('803837457453639491257079614341942108138837688287558145' '837488917522297427376533365218650233616396004545791504' '202360320876656996676098728404396540823292873879185086' '916685732826776177102938969773947016708230428687109997' '439976544144845341155872450633409279022275296229414984' '230688168540432645753401832978611129896064484521619165' '2872597534901')) text = 'expected:\n %s\nactual:\n %s'%( tuple('\n '.join(s[i:i+50] for i in range(0,len(s),50)) for s in [repr(v) for v in (expected, actual)])) assert actual==expected, text if opts and opts[0]=='-print': print text if actual == expected: print '... as expected ;-)' if __name__ == '__main__': import sys try: main(sys.argv[1:]) except Exception,e: print '%s:\n%s'%(e.__class__.__name__, e) Bear in mind my python and pypy versions are out of date, but you can easily try tpow.py as follows and see what happens for you... [09:56 ~/wk/sympy]$ python tpow.py ... as expected ;-) [09:57 ~/wk/sympy]$ pypy tpow.py pypy: /usr/lib/libcrypto.so.0.9.8: no version information available (required by pypy) pypy: /usr/lib/libssl.so.0.9.8: no version information available (required by pypy) AssertionError: expected: 20530823396476474147406544072254814715283748784362 44152161245680082478906739003837537707602796252388 26785149574145142883259685303575448739233272560600 11928022881236023962285938983510613030381988126083 95321192472488554180795988393259013286827612749689 36177047767083711671518132940286327492976381076986 6878488336371858543186166507924901737L actual: 54907080201776472107337034411173408169461451059492 19340520622621434519462362497005098074867506892669 64669150197877920364556131878818528130569072864509 78537992136333962220382281410469047624566423572707 23947703936700498584279881397667810995651289825448 34510224055185249725794168117352710937820049011975 6120237666889918094387505100251368387L [09:57 ~/wk/sympy]$ python tpow.py -print expected: 20530823396476474147406544072254814715283748784362 44152161245680082478906739003837537707602796252388 26785149574145142883259685303575448739233272560600 11928022881236023962285938983510613030381988126083 95321192472488554180795988393259013286827612749689 36177047767083711671518132940286327492976381076986 6878488336371858543186166507924901737L actual: 20530823396476474147406544072254814715283748784362 44152161245680082478906739003837537707602796252388 26785149574145142883259685303575448739233272560600 11928022881236023962285938983510613030381988126083 95321192472488554180795988393259013286827612749689 36177047767083711671518132940286327492976381076986 6878488336371858543186166507924901737L ... as expected ;-) [09:57 ~/wk/sympy]$