#12832: Bug in cvxopt on power7
--------------------------------------------------------------+-------------
Reporter: fbissey | Owner:
tbd
Type: defect | Status:
needs_review
Priority: major | Milestone:
sage-5.10
Component: packages: standard | Resolution:
Keywords: | Work issues:
Report Upstream: Fixed upstream, in a later stable release. | Reviewers:
Authors: Jeroen Demeyer | Merged in:
Dependencies: | Stopgaps:
--------------------------------------------------------------+-------------
Changes (by jdemeyer):
* status: new => needs_review
Old description:
> There are two doctests related to cvxopt failing on power7
> {{{
> sage -t --long -force_lib "devel/sage/doc/en/numerical_sage/cvxopt.rst"
> **********************************************************************
> File
> "/hpc/scratch/frb15/sandbox/sage-5.7.beta4/devel/sage/doc/en/numerical_sage/cvxopt.rst",
> line 129:
> sage: print sol['x'] # ... below since can get -00 or +00
> depending on architecture
> Expected:
> [ 1.00e...00]
> [ 1.00e+00]
> Got:
> [ 9.87e-01]
> [ 9.92e-01]
> <BLANKLINE>
> **********************************************************************
> }}}
> and
> {{{
> sage -t -long "devel/sage-main/sage/numerical/optimize.py"
> **********************************************************************
> File "/hpc/scratch/frb15/sandbox/sage-5.7.beta4/devel/sage-
> main/sage/numerical/optimize.py", line 515:
> sage: sol['x']
> Expected:
> (0.999..., 1.000...)
> Got nothing
> **********************************************************************
> File "/hpc/scratch/frb15/sandbox/sage-5.7.beta4/devel/sage-
> main/sage/numerical/optimize.py", line 525:
> sage: sol['x']
> Expected:
> (45.000000..., 6.2499999...3, 1.00000000...)
> Got nothing
> GLPK Simplex Optimizer, v4.44
> 6 rows, 3 columns, 8 non-zeros
> Preprocessing...
> 2 rows, 2 columns, 4 non-zeros
> Scaling...
> A: min|aij| = 2.400e+01 max|aij| = 5.000e+01 ratio = 2.083e+00
> GM: min|aij| = 8.128e-01 max|aij| = 1.230e+00 ratio = 1.514e+00
> EQ: min|aij| = 6.606e-01 max|aij| = 1.000e+00 ratio = 1.514e+00
> Constructing initial basis...
> Size of triangular part = 2
> * 0: obj = -5.100000000e+01 infeas = 0.000e+00 (0)
> * 1: obj = -5.225000000e+01 infeas = 0.000e+00 (0)
> OPTIMAL SOLUTION FOUND
> **********************************************************************
> }}}
>
> This is now solved in cvxopt 1.1.6.
>
> '''spkg''':
> [http://boxen.math.washington.edu/home/jdemeyer/spkg/cvxopt-1.1.6.p0.spkg]
New description:
There are two doctests related to cvxopt failing on power7
{{{
sage -t --long -force_lib "devel/sage/doc/en/numerical_sage/cvxopt.rst"
**********************************************************************
File
"/hpc/scratch/frb15/sandbox/sage-5.7.beta4/devel/sage/doc/en/numerical_sage/cvxopt.rst",
line 129:
sage: print sol['x'] # ... below since can get -00 or +00
depending on architecture
Expected:
[ 1.00e...00]
[ 1.00e+00]
Got:
[ 9.87e-01]
[ 9.92e-01]
<BLANKLINE>
**********************************************************************
}}}
and
{{{
sage -t -long "devel/sage-main/sage/numerical/optimize.py"
**********************************************************************
File "/hpc/scratch/frb15/sandbox/sage-5.7.beta4/devel/sage-
main/sage/numerical/optimize.py", line 515:
sage: sol['x']
Expected:
(0.999..., 1.000...)
Got nothing
**********************************************************************
File "/hpc/scratch/frb15/sandbox/sage-5.7.beta4/devel/sage-
main/sage/numerical/optimize.py", line 525:
sage: sol['x']
Expected:
(45.000000..., 6.2499999...3, 1.00000000...)
Got nothing
GLPK Simplex Optimizer, v4.44
6 rows, 3 columns, 8 non-zeros
Preprocessing...
2 rows, 2 columns, 4 non-zeros
Scaling...
A: min|aij| = 2.400e+01 max|aij| = 5.000e+01 ratio = 2.083e+00
GM: min|aij| = 8.128e-01 max|aij| = 1.230e+00 ratio = 1.514e+00
EQ: min|aij| = 6.606e-01 max|aij| = 1.000e+00 ratio = 1.514e+00
Constructing initial basis...
Size of triangular part = 2
* 0: obj = -5.100000000e+01 infeas = 0.000e+00 (0)
* 1: obj = -5.225000000e+01 infeas = 0.000e+00 (0)
OPTIMAL SOLUTION FOUND
**********************************************************************
}}}
This is now solved in cvxopt 1.1.6.
'''spkg''':
[http://boxen.math.washington.edu/home/jdemeyer/spkg/cvxopt-1.1.6.p0.spkg]
([attachment:cvxopt-1.1.6.p0.diff spkg diff])
--
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12832#comment:28>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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