David Cournapeau wrote: > Michael Abshoff wrote: Hi David,
>> Sorry for not being precise: Both python and numpy have been build with >> >> OPT=-DNDEBUG -g -O0 -fwrapv -Wall -Wstrict-prototypes > > Hm, strange. I don't know why you can't get any debug info, then. well, it looks like some sort of stack corruption. >> i.e. "-O0" instead of "-O3". I am using ATLAS and netlib.org Lapack, so >> I will rebuild everything and run the BLAS as well as Lapack testers to >> make 100% sure everything is on working correctly. Since the above >> python is part of a Sage build and passes 99% of Sage's doctests I am >> pretty sure that ATLAS and Lapack do work, but one never knows. Since I >> am sleepy I will do all that tomorrow. > > It is indeed very likely the problem is there: typically, problem when > passing complex number at the C/Fortran, this kind of thing. > >> Ok. Which compiler did you use? > > gcc 3.4 (the one give by open solaris by default), no blas/lapack. I > actually would try this configuration first (no blas/lapack at all), to > be sure it is blas/lapack or us. I had a second wind and I just build python+numpy without blas and lapack and low and behold it works: Python 2.5.2 (r252:60911, Sep 23 2008, 04:25:09) [GCC 4.2.4] on sunos5 Type "help", "copyright", "credits" or "license" for more information. >>> from numpy import * >>> a = array([1,0,0,0,0,-1],dtype=complex) >>> a array([ 1.+0.j, 0.+0.j, 0.+0.j, 0.+0.j, 0.+0.j, -1.+0.j]) >>> roots(a) array([-0.80901699+0.58778525j, -0.80901699-0.58778525j, 0.30901699+0.95105652j, 0.30901699-0.95105652j, 1.00000000+0.j ]) >>> ^D So it looks like gfortran 4.2.4 on Solaris + "-O3" miscompiles lapack, which is honestly unbelievable considering netlib.org lapack+BLAS are the yard stick for any Fortran compiler. Sorry for the noise and thanks for your help. > cheers, > > David Cheers, Michael > _______________________________________________ > Numpy-discussion mailing list > Numpy-discussion@scipy.org > http://projects.scipy.org/mailman/listinfo/numpy-discussion > _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion