[Clp-tickets] [COIN-OR Linear Programming Solver] #18: Memory crash in CLP, file ClpPrimalColumnSteepest.cpp; pivotsequence

[COIN-OR Linear Programming Solver]

#18: Memory crash in CLP, file ClpPrimalColumnSteepest.cpp; pivotsequence
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  Reporter:  ltaylor     |       Owner:  somebody                                                  
      Type:  defect      |      Status:  new                                                       
  Priority:  major       |   Milestone:                                                            
 Component:  component1  |     Version:                                                            
Resolution:              |    Keywords:  vector memory access pivot variable primal column steepest
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Comment (by ltaylor):

 I was unable to upload the MPS file corresponding to the problem that
 COIN-MP was working on when it crashed.  (Even compressed and zipped, it
 exceeded the maximum attachment size.)

 I would be happy to upload this file, 44 Mb, or its zip archive, 6 Mb, on
 request. How can we do this?

 Of course, since this is a memory-based problem, it probably depends on
 the specific configuration in order to crash. It should, however, always
 cause a violation of range-checking if you turn that on in debugging.

 Finally, since I was using this module through COIN-MP calls and not as
 CLP stand-alone, there may possibly be some difference due to how it is
 called. I suspect that it would be deterministic, with the same steps and
 results, up to a point of range violation.

 Let me know what I can do to help.

 LAT

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Ticket URL: <https://projects.coin-or.org/Clp/ticket/18#comment:2>
COIN-OR Linear Programming Solver <http://projects.coin-or.org/Clp>
A linear programming solver.