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Hello everyone, I am new to this so bear with me! I have been trying to build scipy on our Opteron machine (linux enterprise 3, gcc 3.2.3) and had no success, I searched the mailing list and found the link about optimization and gcc version http://www.scipy.net/pipermail/scipy-user/2004-November/003815.html and decided to only build blas and lapack and see if I can get the correct answer for the example that is given in the above link I tried with gcc 3.2.3 and no optimization and had no luck I then build a local copy of gcc 3.4.3 and tried with/without optimization and still have no luck my answers are wr=9.32183,-9.59852e-16,-0.321825,wi=0,0,0 whereas the above link gives wr=9.32183,-6.20979e-16,-0.321825,wi=0,0,0 at this point I am unable to proceed simply because I have no idea what to do, according to the above link gcc 3.4.3 should solve the problem but I am not sure why it does not do it in my case. any help/hints is greatly appreciated. Leila
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On Tue, 1 Mar 2005, Leila baghdadi wrote:
Hello everyone,
I am new to this so bear with me!
I have been trying to build scipy on our Opteron machine (linux enterprise 3, gcc 3.2.3) and had no success,
I searched the mailing list and found the link about optimization and gcc version http://www.scipy.net/pipermail/scipy-user/2004-November/003815.html
and decided to only build blas and lapack and see if I can get the correct answer for the example that is given in the above link
I tried with gcc 3.2.3 and no optimization and had no luck
I then build a local copy of gcc 3.4.3 and tried with/without optimization and still have no luck
my answers are
wr=9.32183,-9.59852e-16,-0.321825,wi=0,0,0
whereas the above link gives wr=9.32183,-6.20979e-16,-0.321825,wi=0,0,0
I don't see what is the problem here, the results are equal up-to numerical noice. It is normal to get slightly different results when using Fortran compiled blas/lapack or ATLAS blas/lapack. Pearu
participants (2)
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Leila baghdadi
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Pearu Peterson