#12832: Bug in scipy on power7
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Reporter: fbissey | Owner: tbd
Type: defect | Status: new
Priority: major | Milestone: sage-5.1
Component: packages | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by fbissey):
If after that we do
([http://abel.ee.ucla.edu/cvxopt/userguide/blas.html#level-3-blas])
{{{
F = m([[0.0,0.0,0.0,0.0],[0.0,0.0,0.0,0.0]])
cvxopt.base.gemm(W2,G,F,beta=0.5,partial = True)
print F
cvxopt.base.gemm(W2,G,F,beta=0.5,partial = True
print F
}}}
we get
{{{
[ 6.12e+00 3.06e+00]
[ 3.32e+00 6.64e+00]
[-1.29e+00 0.00e+00]
[ 0.00e+00 -1.05e+00]
[ 1.22e+01 6.12e+00]
[ 6.64e+00 1.33e+01]
[-2.58e+00 0.00e+00]
[ 0.00e+00 -2.10e+00]
}}}
Clearly the beta factor is always passed as "1" rather than the default
zero or the value you want. I checked that passing a value for alpha
works.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12832#comment:6>
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