[Ipopt-tickets] [Ipopt] #213: Repeatability of optimization runs with IPOPT

[Ipopt]

#213: Repeatability of optimization runs with IPOPT
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  Reporter:  florian.saupe  |      Owner:  stefan
      Type:  defect         |     Status:  assigned
  Priority:  normal         |  Component:  Ipopt
   Version:  3.11           |   Severity:  normal
Resolution:                 |   Keywords:  repeatability
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Comment (by florian.saupe):

 Thank you for your feedback.
 > The only places where random numbers are used are in the equilibrium
 scaling

 It is deactivated.

 > The only places where random numbers are used are in the [...]
 derivative testing.

 Can I specify the test point or find out which point is tested? How are
 these points chosen?

 > Nondeterminism may be caused by parallelized linear algebra routines
 (blas, lapack) or linear solver (HSL), but which of them is used depends
 on the Ipopt build that is used by OPTI.

 IPOPT v3.11.1 is used. How can I debug this problem? It seems Matlab/BLAS
 and the i7 don't go along very well. I had to abandon Matlab 2011b because
 it used a BLAS version incompatible with the i7. Until now, Matlab 2013a
 worked fine.

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Ticket URL: <https://projects.coin-or.org/Ipopt/ticket/213#comment:2>
Ipopt <http://projects.coin-or.org/Ipopt>
Interior-point optimizer for nonlinear programs.