[SciPy-User] understanding machine precision

Nils Wagner nwagner@iam.uni-stuttgart...
Tue Dec 14 13:17:10 CST 2010


Hi all,

I am using ATLAS

python -i try_deterministic.py

lstsq
0.0
0.0
0.0
0.0
0.0

pinv
0.0
0.0
0.0
0.0
0.0

pinv2
0.0
0.0
0.0
0.0
0.0
>>> from numpy import show_config
>>> show_config()
atlas_threads_info:
     libraries = ['lapack', 'ptf77blas', 'ptcblas', 
'atlas']
     library_dirs = 
['/home/nwagner/src/ATLAS3.8.2/mybuild/lib']
     define_macros = [('ATLAS_INFO', '"\\"3.8.2\\""')]
     language = f77
     include_dirs = 
['/home/nwagner/src/ATLAS3.8.2/include']
blas_opt_info:
     libraries = ['ptf77blas', 'ptcblas', 'atlas']
     library_dirs = 
['/home/nwagner/src/ATLAS3.8.2/mybuild/lib']
     define_macros = [('ATLAS_INFO', '"\\"3.8.2\\""')]
     language = c
     include_dirs = 
['/home/nwagner/src/ATLAS3.8.2/include']
atlas_blas_threads_info:
     libraries = ['ptf77blas', 'ptcblas', 'atlas']
     library_dirs = 
['/home/nwagner/src/ATLAS3.8.2/mybuild/lib']
     define_macros = [('ATLAS_INFO', '"\\"3.8.2\\""')]
     language = c
     include_dirs = 
['/home/nwagner/src/ATLAS3.8.2/include']
lapack_opt_info:
     libraries = ['lapack', 'ptf77blas', 'ptcblas', 
'atlas']
     library_dirs = 
['/home/nwagner/src/ATLAS3.8.2/mybuild/lib']
     define_macros = [('ATLAS_INFO', '"\\"3.8.2\\""')]
     language = f77
     include_dirs = 
['/home/nwagner/src/ATLAS3.8.2/include']
lapack_mkl_info:
   NOT AVAILABLE
blas_mkl_info:
   NOT AVAILABLE
mkl_info:
   NOT AVAILABLE
  

Nils


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