Ortools difference in Constraint Enforcement

[Divya Manikantan]

I have a very wierd problem. I have capacity and distance constraint enforced for a particular problem. I observe that both the constraints are enforced on my machine, but the exact same code , config and ortools setup on vm and anther machine, the capacity constraint is violated.. How is this possible ? What should I check to make the solution work consistently. Can someone guide.

[grego...@gmail.com]

You can try to solve a problem with interleave search and one search worker. Both machines should produce same result since cp-sat is in this case deterministic.

Checking of proto files on both machines can show a problem with generation of a model.

[Laurent Perron]

Not sure the problem was a CP-SAT problem. Capacity and distance scream routing library to me.

Laurent Perron | Operations Research | lpe...@google.com | (33) 1 42 68 53 00

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[blind.line]

My guess is you are using a different version of ORTools. 

Turn on logging and/or print the version number from within your code to verify. 

James

On Jul 25, 2024, at 14:42, 'Laurent Perron' via or-tools-discuss <or-tools...@googlegroups.com> wrote:



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