#14754: Update ATLAS to stable version 3.10.1
-------------------------------------------------------------------+--------
Reporter: jdemeyer |
Owner: jdemeyer
Type: enhancement |
Status: needs_review
Priority: critical |
Milestone: sage-5.11
Component: packages: standard |
Resolution:
Keywords: | Work
issues:
Report Upstream: N/A |
Reviewers: Benjamin Jones, Karl-Dieter Crisman, Dmitrii Pasechnik, Georg
Weber, François Bissey, John Palmieri, Volker Braun
Authors: Volker Braun, Jeroen Demeyer, Jean-Pierre Flori | Merged
in:
Dependencies: |
Stopgaps:
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Comment (by vbraun):
I do get the error reported on #14753
{{{
sage -t --long sage/matrix/matrix_double_dense.pyx
**********************************************************************
File "sage/matrix/matrix_double_dense.pyx", line 3809, in
sage.matrix.matrix_double_dense.Matrix_double_dense.is_positive_definite
Failed example:
H.is_positive_definite()
Expected:
True
Got:
False
**********************************************************************
}}}
also with Fedora's version of ATLAS-3.8.4. I'm not sure that the test is
actually numerically well-conditioned, it does:
{{{
sage: R = random_matrix(CDF, 200)
sage: H = R.conjugate_transpose()*R
sage: import scipy.linalg
sage: scipy.linalg.cholesky(H.numpy(), lower=1)
}}}
Depending on the distribution of `random_matrix` this may be ill-
conditioned: http://stackoverflow.com/questions/12322431/generating-a
-pseduo-random-positive-definite-matrix. Conditioning numbers are around
`10^6` - `10^7` so its not great but not terribly bad either.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14754#comment:46>
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