terminate called after throwing an instance of 'std::bad_alloc'

[Alberto Manzini]

Hi everyone, I'm getting this message while solver is starting search for solutions (see  attached image).

The problem dimensions are like this one:

#Variables: 81727 (#bools:103 #ints:111 in objective)

- 80444 Booleans in [0,1]

- 269 different domains in [-3744,56590] with a largest complexity of 174.

- 330 constants in {-1,0,1,2,3,5,6,7,8,11,12,13, ... 68,3382,3408,3409,4276,4612,6292,6293,6294,6295}

#kBoolOr: 23 (#literals: 23)

#kInterval: 598 (#enforced: 267)

#kLinear1: 82691 (#enforced: 82398)

#kLinear2: 42128 (#enforced: 2605) (#complex_domain: 1044)

#kLinear3: 765 (#enforced: 281)

#kLinearN: 504 (#terms: 80045)

#kNoOverlap: 77 (#intervals: 306, #optional: 178, #variable_sizes: 152)

#kReservoir: 44

I'm using 8 workers for the solver search on a 16GB RAM machine.

Maybe I should use less workers in order to avoid this memory error?

Thanks,

Alberto

[Laurent Perron]

Yes. Try 8.

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[Alberto Manzini]

Sorry, you mean 8 workers? Because I'm already using that configuration

I'm using 8 workers for the solver search on a 16GB RAM machine.

[Laurent Perron]

:-)

Below 8 workers, the performance degrades a lot.

I wonder why you have negative value in your domains. Is this for past fixed events ?

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

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[Alberto Manzini]

Because some of the variables are used to linearize the decomposition of an expression in its positive and negative component ( f+ = max(f, 0), f- = min(f, 0) )

Why are you asking this? It's somehow better to have only positive domains?

Thanks,

Alberto

[Laurent Perron]

No, that was surprising in a scheduling model.

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

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