Opened 5 years ago

Closed 7 weeks ago

#150 closed defect (migrated)

No solution after 12 hours

Reported by: kathl Owned by: tkr
Priority: blocker Component: Cbc
Version: 2.7 Keywords:
Cc:

Description

I try to solve a combinatorial problem which has 72562 binary decision variables, annual budget constraints (22 years) and other constraints.

When I set the annual budget as 0 or other small values (non-zero), the solution jumped out very fast. However, when I set the annual budget to a bigger value, it went over 12 hours before I killed it. No solution!

I reduced the number of decision variables, it worked. While, when the number of decision variable increase to 5000, the programme may keep running for long.

Any suggestion? Thank you!

Change History (1)

comment:1 Changed 7 weeks ago by stefan

  • Resolution set to migrated
  • Status changed from new to closed

This ticket has been migrated to GitHub and will be resolved there: https://github.com/coin-or/Cbc/issues/150

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