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#619 superLU fails to notice a matrix is singular sometimes

Version 4.0 RC1
assigned
Frank Tuffner
None
none
powerflow
major
trunk
defect
2016-05-15
2012-10-12
Frank Tuffner
No

superLU occasionally iterates on a matrix that has obviously become singular. fault_check can be put into the system to supplement this check, but there may be options inside superLU to fix it.

Discussion

  • Frank Tuffner

    Frank Tuffner - 2012-10-12
    • status changed from new to accepted
     

  • Jason Fuller

    Jason Fuller - 2012-11-10
    • milestone changed from Unscheduled to Version 2.3 RC 1
     

  • Frank Tuffner

    Frank Tuffner - 2012-11-30
    • milestone changed from Version 2.3 RC 1 to Version 3.0 RC 1

    There do not appear to be any superLU flags to make it more "robust". Deferring this to 3.0 so as more examples pop up, we can handle them.

     

  • David P. Chassin

    David P. Chassin - 2012-12-29
    • version changed from 2.3 to trunk
     

  • Frank Tuffner

    Frank Tuffner - 2013-01-04
    • status changed from accepted to assigned
     

  • Jason Fuller

    Jason Fuller - 2014-08-08
    • Description has changed:

    Diff:
    • Milestone: Version 3.0 RC 1 --> Unscheduled
    • Resolution: --> none
    • Component: Powerflow --> powerflow
    • Priority: minor --> major
     

  • Frank Tuffner

    Frank Tuffner - 2014-09-04

    An approach to this may be to look for #INDs and other nasty results during the convergence check and variable update, failing out before superLU "converges" to invalid answers.

     

  • David P. Chassin

    David P. Chassin - 2016-05-15
    • Milestone: Unscheduled --> Version 4.0 RC1